Railroad ballast excavating device

Abstract

The present application provides a ballast excavating device, and relates to the technical field of track maintenance equipment.The ballast excavating device comprises a connecting support, an excavating blade assembly, an excavating chain, a rotating assembly and a driving assembly.The rotating assembly comprises a rotating power element and a rotating cylinder, both of which are arranged on the lower side of the connecting support.The one end of the rotating power element is connected with the connecting support, and the other end is in transmission connection with the rotating cylinder.The upper end of the rotating cylinder is rotatably connected with the connecting support through a rotating support, and the lower end of the rotating cylinder is fixedly connected with the excavating blade assembly.Meanwhile, the rotating axis of the excavating blade assembly, the rotating axis of the rotating cylinder and the rotating axis of the driving assembly are coaxially arranged, which can effectively reduce the volume of the ballast excavating device and the activity space during use, so that the ballast excavating device can perform ballast excavating operation in the limited space area such as a bridge and a tunnel.

Description

[0001] This application is a divisional application. The original application number is 202110906472.3, the application date is August 9, 2021, and the invention title is a ballast excavation device and railway ballast excavation equipment. Technical Field

[0002] This invention relates to the field of equipment technology for track maintenance, and more specifically, to a ballast excavation device and railway ballast excavation equipment. Background Technology

[0003] Ballast is the track bed formed by laying crushed stone and other materials. In rail transit, sleepers are generally placed on the ballast, and the track is laid on the sleepers. With the continuous increase in railway operating mileage, the needs for line maintenance operations have become more diversified. Large-scale operation units such as ballast cleaning, tamping, stabilization, and ballast distribution can basically meet the needs of major and medium-sized line repairs. However, after major and medium-sized repairs, sections of track with "short, scattered, and complex" geometric deviations still appear, requiring temporary maintenance operations. Currently, temporary line maintenance mainly relies on personnel using small tools, which suffers from frequent manual track work, high labor intensity, poor work quality, and extremely low efficiency. This results in a short track bed maintenance time after the work and great difficulty in construction organization and management. Therefore, there is an urgent need for an automated integrated line operation system.

[0004] To address these issues, some excavation devices capable of performing temporary maintenance have emerged in the prior art. However, existing ballast excavation devices are bulky and cannot be used for ballast excavation in areas with limited space, such as bridges and tunnels. Summary of the Invention

[0005] The purpose of this invention is to provide a ballast excavation device that can improve upon the large size and structure of existing ballast excavation devices and solve the technical problem that ballast excavation operations cannot be carried out in areas with limited space, such as bridges and tunnels, during construction.

[0006] The present invention also aims to provide a railway ballast excavation device that can perform railway ballast excavation work in areas with limited space, such as bridges and tunnels.

[0007] The ballast excavation device of the present invention includes:

[0008] Connecting bracket;

[0009] A slewing assembly includes a slewing power component and a slewing drum, both located below the connecting bracket. One end of the slewing power component is connected to the connecting bracket, and the other end is connected to the slewing drum for driving the slewing drum to rotate relative to the connecting bracket. The upper end of the slewing drum is rotatably connected to the connecting bracket via a slewing bearing. A digging cutter assembly is located below the slewing drum. The lower end of the slewing drum is fixedly connected to the digging cutter assembly, and the slewing drum is used to drive the digging cutter assembly to rotate under the drive of the slewing power component.

[0010] A digging chain, the digging chain being wound around the digging cutter assembly, and the digging chain being movably connected to the digging cutter assembly; and

[0011] A drive assembly connected to the digging chain drive to drive the digging chain to move relative to the digging cutter assembly;

[0012] The rotation axis of the digging blade assembly, the rotation axis of the rotary drum, and the rotation axis of the drive assembly are coaxially arranged.

[0013] The rotary drum includes a rotating cylinder and a connecting cylinder; the upper end of the rotating cylinder is closed, and the drive shaft is fixedly connected to the upper side of the rotating cylinder by bolts; the lower end of the rotating cylinder is open, and the upper end of the connecting cylinder extends into the rotating cylinder from the lower end of the rotating cylinder and is fixedly connected to the rotating cylinder.

[0014] The lower end of the connecting cylinder is fixedly connected to the digging blade assembly; under the drive of the swing cylinder, the digging blade assembly is rotated through the connecting cylinder, and the lower end of the driving assembly extends out from the lower end of the connecting cylinder.

[0015] The lower end of the connecting cylinder is provided with a second flange, and the excavating blade assembly includes a beam with a connecting ring at one end; the connecting ring is sleeved on the lower end of the connecting cylinder and is fixedly connected to the second flange by bolts; the lower end of the drive shaft extends from the lower end of the connecting cylinder and is connected to the drive sprocket located below the connecting ring by spline drive.

[0016] The lower end of the drive shaft of the drive assembly extends downward from the through hole formed by the connecting ring, and the driving sprocket connected to the lower end of the drive shaft is located on the lower side of the connecting ring; along the length of the beam, the driven sprocket is located at the end of the beam away from the connecting ring.

[0017] The digging chain of this invention is wound around the digging cutter assembly, and the drive assembly is connected to the digging chain for transmission. Driven by the drive assembly, the digging chain moves relative to the digging cutter assembly, thus enabling ballast excavation when the digging cutter assembly laterally cuts into the ballast. Because the rotation axis of the digging cutter assembly, the rotation axis of the rotary drum, and the rotation axis of the drive assembly are coaxial, the volume of the ballast excavation device and the operating space during use can be effectively reduced. This allows the ballast excavation device to perform ballast excavation operations in areas with limited space, such as bridges and tunnels. Furthermore, by providing a connecting ring at the end of the main beam and designing the connecting ring specifically, the space occupied is reduced, which is beneficial for the ballast excavation device to operate in areas with limited space. Optionally, the digging cutter assembly includes a main beam and a connecting ring located at one end of the main beam. The upper end of the connecting ring is fixedly connected to the lower end of the rotary drum by bolts. The upper end of the connecting ring extends above the top surface of the main beam, and the lower side of the connecting ring forms a space for installing the drive assembly's drive sprocket.

[0018] Optionally, the slewing bearing includes an inner ring and an outer ring that rotate with each other, the inner ring being connected to the slewing cylinder and the outer ring being connected to the connecting bracket.

[0019] Optionally, the rotary power component is a swing cylinder, which includes a housing and a drive shaft rotatably disposed within the housing. The housing is fixedly connected to the connecting bracket, and the drive shaft is fixedly connected to the rotary drum, with the drive shaft and the rotary drum being coaxially arranged.

[0020] Optionally, the swing cylinder is disposed on the upper side of the rotary drum, the drive assembly is disposed in the rotary drum, and the lower end of the drive assembly extends from the lower end of the rotary drum to be connected to the digging chain drive.

[0021] Optionally, the drive assembly includes a drive motor, a drive shaft, and a drive sprocket connected sequentially via spline transmission. The drive motor is fixedly connected to the upper end of the connecting cylinder and located inside the rotating cylinder. The drive shaft is supported inside the connecting cylinder by bearings, and the lower end of the drive shaft extends from the lower end of the connecting cylinder and is fixedly connected to the drive sprocket. The drive sprocket meshes with the digging chain to drive the digging chain to move relative to the digging blade assembly.

[0022] Optionally, the rotating cylinder has heat dissipation holes on its peripheral wall, which are connected to the inner cavity of the rotating cylinder to dissipate heat from the drive motor.

[0023] Optionally, the bearing includes a second bearing, which is sleeved on the lower end of the transmission shaft, and a third limiting step is provided at the lower end of the inner wall of the connecting cylinder, with the outer ring of the second bearing abutting against the lower part of the third limiting step.

[0024] Optionally, a bearing cap is fixedly connected to the lower end of the connecting cylinder by bolts, so as to press the second bearing into the connecting cylinder through the bearing cap; a sealing structure is also provided between the bearing cap and the drive shaft.

[0025] Optionally, the drive shaft is fitted with a wear-resistant sleeve, the upper end of which abuts against the lower end face of the inner ring of the second bearing to limit the inner ring of the second bearing; the sealing structure is disposed between the bearing cap and the wear-resistant sleeve; a positioning plate is installed at the lower end of the drive shaft, and the positioning plate is supported on the lower side of the drive sprocket; the drive sprocket is limited on the drive shaft by the wear-resistant sleeve and the positioning plate.

[0026] Optionally, the bearing further includes a first bearing spaced above the second bearing, and the drive assembly further includes a partition sleeve, the two ends of which are respectively supported by the inner ring of the first bearing and the inner ring of the second bearing; the drive shaft is provided with a first limiting step, the inner ring of the first bearing abuts against the lower part of the first limiting step, the connecting cylinder is provided with a second limiting step, and the outer ring of the first bearing abuts against the upper part of the second limiting step; the connecting cylinder (137) is equipped with a retaining ring on the upper side corresponding to the first bearing, and the retaining ring abuts against the upper side of the outer ring of the first bearing.

[0027] Optionally, the lower end of the rotating cylinder has a waist-shaped hole to open the lower end of the rotating cylinder, and the upper end of the connecting cylinder has two parallel planes; the two parallel planes cooperate with the plane of the waist-shaped hole to make the connecting cylinder and the rotating cylinder coaxially arranged.

[0028] Optionally, the upper end of the connecting cylinder is provided with a first flange, and the first flange is located below the two parallel planes; the lower end of the rotating cylinder is fixedly connected to the first flange by bolts.

[0029] Optionally, the upper end of the connecting cylinder is further provided with a boss located on the upper side of the two parallel planes, and a through hole in the connecting cylinder for the drive shaft to pass through the boss, so that the boss is a hollow structure; the drive motor is fixedly supported on the upper end face of the boss; the outer peripheral wall of the boss is provided with a first screw plug hole and a second screw plug hole, and the first screw plug hole and the second screw plug hole are staggered in the height direction.

[0030] Optionally, the connecting bracket includes a connecting plate and a mounting cylinder fixedly connected below the connecting plate. The mounting cylinder has a tubular structure with open top and bottom. The swing cylinder is disposed inside the mounting cylinder, and the housing of the swing cylinder is fixedly connected to the lower side of the connecting plate. The upper end of the rotary cylinder is rotatably connected to the lower end of the mounting cylinder through a slewing bearing.

[0031] Optionally, the slewing power component is a telescopic cylinder; the telescopic cylinder is located on the outer periphery of the slewing drum, and a slewing lug is provided on the outer periphery of the slewing drum; one end of the telescopic cylinder is connected to the connecting bracket, and the other end of the telescopic cylinder is hinged to the slewing lug, so as to drive the slewing drum to rotate when the telescopic cylinder extends or retracts; the drive assembly is coaxially arranged in the slewing drum, and the lower end of the drive assembly extends from the lower end of the slewing drum to connect with the digging chain drive.

[0032] Optionally, the drive assembly includes a drive motor, a drive shaft, and a drive sprocket connected sequentially via spline transmission. The drive motor is located on the upper side of the rotary drum, and the drive sprocket is located on the lower side of the rotary drum. The drive shaft passes through the rotary drum, and its lower end extends from the lower end of the rotary drum to be fixedly connected to the drive sprocket. The drive sprocket meshes with the digging chain to drive the digging chain relative to the digging cutter assembly. Optionally, the connecting bracket includes a first mounting plate, a second mounting plate, a bracket ear plate, and a mounting cylinder; the rotary cylinder is rotatably connected to the lower side of the first mounting plate via a slewing bearing; the second mounting plate is connected to one side of the first mounting plate, the bracket ear plate is mounted on the second mounting plate, and one end of the telescopic cylinder is rotatably connected to the bracket ear plate;

[0033] The mounting cylinder is installed above the first mounting plate, the drive motor is housed inside the mounting cylinder, and the upper end of the drive shaft passes through the first mounting plate and is connected to the drive motor for transmission.

[0034] Optionally, a third flange is provided on the rotary drum, and the connecting ring of the digging blade assembly is sleeved below the rotary drum and fixedly connected to the third flange by bolts.

[0035] Optionally, the ballast excavation device further includes a first lug and a second lug disposed opposite to each other on the upper side of the connecting bracket, and an installation space is formed between the first lug and the second lug for mounting the connecting shaft of the working arm; the rotation axis of the excavating cutter assembly, the rotation axis of the rotary drum, and the rotation axis of the drive assembly all pass through the installation space.

[0036] An embodiment of the present invention also provides a railway ballast excavation device. This railway ballast excavation device includes a car body and the aforementioned ballast excavation apparatus. The car body is connected to the ballast excavation apparatus, and the car body is used to cooperate with the railway track to drive the ballast excavation apparatus to travel along the extension direction of the track.

[0037] Optionally, the railway ballast excavation equipment further includes a working arm and a connecting shaft. One end of the working arm is connected to the car body, and the other end is connected to the connecting bracket of the ballast excavation device through the connecting shaft.

[0038] The beneficial effects of the ballast excavation device and railway ballast excavation equipment of the present invention include, for example:

[0039] Embodiments of the present invention provide a ballast excavation device, comprising a connecting bracket, an excavating cutter assembly, an excavating chain, a slewing assembly, and a drive assembly. The slewing assembly includes a slewing power component and a slewing cylinder, both located below the connecting bracket. One end of the slewing power component is connected to the connecting bracket, and the other end is drivenly connected to the slewing cylinder to drive the slewing cylinder to rotate relative to the connecting bracket. The upper end of the slewing cylinder is rotatably connected to the lower side of the connecting bracket via a slewing bearing. The lower end of the slewing cylinder is fixedly connected to the excavating cutter assembly, thereby driving the excavating cutter assembly to rotate during rotation, causing the excavating cutter assembly to laterally cut into the ballast.

[0040] The digging chain is wound around the digging cutter assembly, and the drive assembly is connected to the digging chain for transmission. Driven by the drive assembly, the digging chain moves relative to the digging cutter assembly, thus enabling ballast excavation when the digging cutter assembly laterally cuts into the ballast. Simultaneously, the rotation axes of the digging cutter assembly, the rotary drum, and the drive assembly are coaxial, effectively reducing the size of the ballast excavation device and the operating space during use. This allows the ballast excavation device to perform ballast excavation operations in areas with limited space, such as bridges and tunnels. Furthermore, because the rotary assembly is located entirely under the connecting support, the lifting position of the ballast excavation device can be set close to the center of rotation, and the center of gravity of the rotary assembly is directly below the connecting support, reducing the force arm of the center of gravity on the connecting support and reducing the overturning moment.

[0041] Embodiments of the present invention also provide a railway ballast excavation device, which includes the aforementioned ballast excavation apparatus. Since this railway ballast excavation device includes the aforementioned ballast excavation apparatus, it also has the beneficial effect of enabling ballast excavation operations in areas with limited space, such as bridges and tunnels. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 A schematic diagram of the overall structure of a railway ballast excavation device provided for an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the ballast excavation device provided in Embodiment 1 of the present invention;

[0045] Figure 3 A cross-sectional structural schematic diagram of the ballast excavation device provided in Embodiment 1 of the present invention;

[0046] Figure 4 This is a schematic diagram of the working structure of the ballast excavation device provided in Embodiment 1 of the present invention;

[0047] Figure 5 for Figure 3 Enlarged schematic diagram of the local structure at point V;

[0048] Figure 6 for Figure 3 Enlarged schematic diagram of the local structure at point VI;

[0049] Figure 7 A schematic diagram of the rotary drum in the ballast excavation device provided in Embodiment 1 of the present invention;

[0050] Figure 8 This is a schematic diagram of the connecting cylinder in the ballast excavation device provided in Embodiment 1 of the present invention;

[0051] Figure 9 for Figure 3 Enlarged schematic diagram of the local structure at point IX;

[0052] Figure 10 This is a schematic diagram of the excavation blade assembly in the ballast excavation device provided in Embodiment 1 of the present invention;

[0053] Figure 11 This is a schematic diagram of the tail structure of the main beam in the ballast excavation device provided in Embodiment 1 of the present invention;

[0054] Figure 12 This is a partial structural diagram of the ballast excavation device provided in Embodiment 2 of the present invention;

[0055] Figure 13 This is a partial structural cross-sectional view of the ballast excavation device provided in Embodiment 2 of the present invention;

[0056] Figure 14 This is a schematic diagram of the railway ballast excavation equipment provided in an embodiment of the present invention from another perspective.

[0057] Icons: 10-Railway ballast excavation equipment; 100-Battery excavation device; 110-Excavating cutter assembly; 111-Main beam; 112-Guide groove; 113-Connecting ring; 114-Driven sprocket; 120-Excavating chain; 130-Slewing assembly; 131-Slewing power component; 132-Swing cylinder; 1321-Drive shaft; 1322-Housing; 133-Telescopic cylinder; 134-Connecting end; 135-Drive end; 136-Slewing drum; 1361-Rotating lug; 1362-Heat dissipation hole; 1363-Oval hole; 1364-Third flange; 137-Connecting cylinder; 1371-First flange; 1372-Second flange; 1373-Parallel plane; 1374-Second limiting step; 1375-Third limiting step; 1376-Boss; 138-Rotating cylinder; 1391-First locating pin; 1392-Second locating pin; 1393-First limiting plate ; 1394-Second limiting plate; 140-Drive assembly; 141-Drive motor; 142-Drive shaft; 143-Drive sprocket; 144-First limiting step; 145-Positioning plate; 150-Connecting bracket; 151-Connecting plate; 152-First hanging ear; 153-Second hanging ear; 154-Installation space; 155-First mounting plate; 156-Second mounting plate; 157-Bracket ear plate; 158-Mounting cylinder; 160-Return Slewing bearing; 161-Inner ring; 162-Outer ring; 170-Sealing structure; 181-First bearing; 182-Second bearing; 183-Separating sleeve; 184-Bearing cap; 185-Wear-resistant sleeve; 186-Retaining ring; 200-Car body; 210-Guide wheel structure; 211-Front guide wheel; 212-Rear guide wheel; 213-Guide wheel bracket; 214-Guide cylinder; 300-Working arm; 311-Connecting shaft; 21-Rail. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0059] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0060] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0061] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use, are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0062] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0063] Example 1

[0064] Figure 1 This is a schematic diagram of the overall structure of the railway ballast excavation equipment 10 provided in this embodiment. Figure 2 This is a structural schematic diagram of the ballast excavation device 100 provided in this embodiment. Figure 3 This is a cross-sectional structural diagram of the ballast excavation device 100 provided in this embodiment. Figure 4 This is a schematic diagram of the ballast excavation device 100 provided in this embodiment during operation. Please refer to the attached diagram. Figures 1-4 This embodiment provides a ballast excavation device 100, and correspondingly, a railway ballast excavation equipment 10 is provided.

[0065] The railway ballast excavation equipment 10 includes a ballast excavation device 100, a car body 200, and a working arm 300. The lower part of the car body 200 is equipped with a traveling mechanism (not shown) that cooperates with the rails 21 of the railway track. The traveling mechanism in this application can adopt a tracked structure or axle wheelset, depending on the actual situation, with a tracked structure being preferred. The car body 200 can move along the rails 21 of the track. The ballast excavation device 100 is connected to the car body 200 via the working arm 300, thereby driving the entire ballast excavation device 100 to move along the rails 21 of the track via the car body 200.

[0066] Before use, the railway ballast excavation equipment 10 is placed on the rail 21 of the railway track. The ballast excavation device 100 is placed roughly along the extension direction of the rail and located on the outer side of the rail 21 (e.g., Figure 1 (As shown), and can move to the area where ballast excavation work needs to be carried out under the drive of the vehicle body 200 and the working arm 300.

[0067] In use, when the railway ballast excavation equipment 10 reaches the area where ballast excavation work needs to be carried out, the vehicle 200 stops moving forward, and the excavating blade assembly 110 of the ballast excavation device 100 rotates under the drive of the slewing assembly 130, thereby cutting sideways into the ballast under the sleepers of the rail 21 (e.g., Figure 4 (As shown), and ballast excavation is achieved through the movement of the excavating chain 120. The ballast excavation device 100 includes a connecting bracket 150, an excavating cutter assembly 110, an excavating chain 120, a slewing assembly 130, and a drive assembly 140. The slewing assembly 130 includes a slewing power component 131 and a slewing cylinder 136, both located below the connecting bracket 150. One end of the slewing power component 131 is connected to the connecting bracket 150, and the other end is drivenly connected to the slewing cylinder 136 to drive the slewing cylinder 136 to rotate relative to the connecting bracket 150. The upper end of the slewing cylinder 136 is rotatably connected to the lower side of the connecting bracket 150 through a slewing bearing 160. The lower end of the slewing cylinder 136 is fixedly connected to the excavating cutter assembly 110, thereby driving the excavating cutter assembly 110 to rotate during rotation, so that the excavating cutter assembly 110 cuts sideways into the ballast. The digging chain 120 is wound around the digging cutter assembly 110, and the drive assembly 140 is connected to the digging chain 120 for transmission. Under the drive of the drive assembly 140, the digging chain 120 moves relative to the digging cutter assembly 110. Thus, when the digging cutter assembly 110 cuts into the ballast, the movement of the digging chain 120 realizes the ballast excavation operation. At the same time, the rotation axis of the digging cutter assembly 110, the rotation axis of the rotary drum 136, and the rotation axis of the drive assembly 140 are coaxially arranged. This can effectively reduce the size of the ballast excavation device 100 and the operating space during use, so that the ballast excavation device 100 can carry out ballast excavation operations in areas with limited space, such as bridges and tunnels. Meanwhile, since the slewing assembly 130 is located under the connecting bracket 150, the lifting position of the ballast excavation device 100 can be set close to the center of rotation, and the center of gravity of the slewing assembly 130 is directly below the connecting bracket 150, which reduces the force arm of the center of gravity on the connecting bracket 150 and reduces the overturning moment.

[0068] The structure of the ballast excavation device 100 provided in this embodiment will be further described below:

[0069] Figure 5 for Figure 3A magnified view of the local structure at point V. Please refer to the diagram. Figure 3 and Figure 5 In this embodiment, the rotary assembly 130 includes a rotary power component 131 and a rotary drum 136 that is pulverizedly connected to the rotary power component 131. The axis of the rotary drum 136 is the rotation axis of the rotary assembly 130. The rotary drum 136 is fixedly connected to the digging cutter assembly 110. Thus, when the rotary power component 131 is working, the rotary drum 136 rotates under the drive of the rotary power component 131, thereby driving the digging cutter assembly 110 to rotate. Since the digging cutter assembly 110 is fixedly connected to the rotary drum 136, the rotation axis of the rotary drum 136 is the rotation axis of the digging cutter assembly 110, and the rotation axis of the rotary drum 136 coincides with the rotation axis of the digging cutter assembly 110.

[0070] Optionally, the rotation power component 131 is a swing cylinder 132. The drive shaft 1321 of the swing cylinder 132 is fixedly connected to the rotating drum 136, and the drive shaft 1321 and the rotating drum 136 are coaxially arranged. Specifically, the swing cylinder 132 is a swing hydraulic cylinder, which includes a housing 1322 and a drive shaft 1321. The drive shaft 1321 is rotatably disposed within the housing 1322, and hydraulic oil is injected into the housing 1322 to drive the drive shaft 1321 to rotate under the action of hydraulic pressure.

[0071] Optionally, the swing cylinder 132 is disposed on the upper side of the rotary drum 136, and the drive assembly 140 is disposed inside the rotary drum 136, with the lower end of the drive assembly 140 extending from the lower end of the rotary drum 136 to be connected to the digging chain 120 located below the rotary drum 136 for transmission. Specifically, the rotary drum 136 is a cylindrical member closed at the upper end and open at the lower end, and the swing cylinder is disposed on the upper side of the rotary drum 136.

[0072] It should be noted that in this embodiment, the output shaft of the swing cylinder 132 rotates relative to the outer casing under the hydraulic pressure. It is understood that in other embodiments, other media can be used as a power source to achieve the rotation of the swing cylinder 132, depending on the requirements. Furthermore, the swing cylinder 132 is equipped with a balance valve (not shown in the figure). When the excavator cutter assembly 110 swings to a preset position under the drive of the swing cylinder 132, the oil circuit is cut off, thus fixing the excavator cutter assembly 110 in the preset position for continuous ballast excavation.

[0073] Furthermore, the rotary drum 136 includes a rotating drum body 138 and a connecting drum 137. The upper end of the rotating drum body 138 is closed, and the drive shaft 1321 is fixedly connected to the upper side of the rotating drum body 138 by bolts, thereby realizing the rotational power transmission between the rotary drum 136 and the drive shaft 1321. Specifically, a first positioning pin 1391 is also provided between the rotating drum body 138 and the drive shaft 1321. The two ends of the first positioning pin 1391 are respectively connected to the rotating drum body 138 and the drive shaft 1321 to ensure the coaxial arrangement between the drive shaft 1321 and the rotating drum body 138. Furthermore, it also includes a first limiting plate 1393 that abuts against the lower side of the first positioning pin 1391. During assembly, the rotating cylinder 138 and the drive shaft 1321 are first positioned coaxially by the first positioning pin 1391. Then, the first limiting plate 1393 is abutted against the lower side of the first positioning pin 1391, that is, the first limiting plate 1393 is located inside the rotating cylinder 138. After that, the drive shaft 1321 is inserted through the first limiting plate 1393 from the inside of the rotating cylinder 138, thereby fixing the drive shaft 1321 and the rotating cylinder 138 and limiting the first positioning pin 1391.

[0074] The lower end of the rotating cylinder 138 is open, and the upper end of the connecting cylinder 137 extends into the rotating cylinder 138 from the lower end of the rotating cylinder 138 and is fixedly connected to the rotating cylinder 138. The lower end of the connecting cylinder 137 is fixedly connected to the digging cutter assembly 110. Driven by the swing cylinder 132, the digging cutter assembly 110 is rotated through the connecting cylinder 137. At the same time, the lower end of the drive assembly 140 extends from the lower end of the connecting cylinder 137, so that the lower end of the drive assembly 140 can be connected to the digging chain 120 for transmission.

[0075] In this embodiment, the ballast excavation device 100 further includes a connecting bracket 150 and a slewing bearing 160. The slewing power component 131 has a connecting end 134 and a driving end 135. The connecting end 134 is connected to the connecting bracket 150, and the driving end 135 is connected to the slewing drum 136. Meanwhile, the slewing drum 136 is rotatably connected to the connecting bracket 150 through the slewing bearing 160. Specifically, the connecting end 134 of the swing cylinder 132 is the upper end of the housing 1322, and the driving end 135 of the swing cylinder 132 is the lower end of the drive shaft 1321.

[0076] Furthermore, the connecting bracket 150 includes a connecting plate 151 and a mounting cylinder 158. The mounting cylinder 158 is a round tube with open upper and lower ends. The upper end of the mounting cylinder 158 is fixedly connected to the connecting plate 151 by bolts, thereby closing the upper opening of the mounting cylinder 158 through the lower end face of the connecting plate 151 to form a chamber for accommodating the swing cylinder 132.

[0077] The upper end of the housing 1322 is connected and positioned to the connecting plate 151 via a second positioning pin 1392. Specifically, both ends of the second positioning pin 1392 are connected to the connecting plate 151 and the housing 1322 of the swing cylinder 132, respectively. Furthermore, the connecting plate 151 and the housing 1322 are fixed together by bolts. Further, a second limiting plate 1394 is included. The upper end of the housing 1322 has a flange that connects to the connecting plate 151. During assembly, the second positioning pin 1392 is first inserted into the connecting plate 151 through the flange. Then, the annular second limiting plate 1394 is fitted onto the housing 1322 and abuts against the lower end face of the flange, thereby positioning the second positioning pin 1392. Bolts pass through the second limiting plate and the flange and are screwed onto the connecting plate 151, thus achieving a fixed connection between the connecting plate 151 and the housing 1322.

[0078] The slewing bearing 160 has an inner ring 161 and an outer ring 162 that rotate with each other. The inner ring 161 is connected to the rotating cylinder 136, and the outer ring 162 is connected to the connecting bracket 150, which helps to reduce the turning radius. Specifically, the outer ring 162 of the slewing bearing 160 is fixedly connected to the lower end of the mounting cylinder 158 by bolts, and the inner ring 161 of the slewing bearing 160 is fixedly connected to the upper end of the rotating cylinder 138 by bolts. In this way, the rotating cylinder 138 is rotatably supported on the mounting cylinder 158 by the slewing bearing 160, so as to realize the rotational connection between the rotating cylinder 138 and the connecting bracket 150.

[0079] It should be noted that in this embodiment, the ballast excavation device 100 is provided with an installation cylinder 158. The upper end of the installation cylinder 158 is fixedly connected to the connecting plate 151 by bolts, thereby forming a space inside the installation cylinder 158 to accommodate the swing cylinder 132. The lower end of the installation cylinder 158 is rotatably connected to the rotating cylinder 138 through the slewing bearing 160. It can be understood that in other embodiments, the connecting bracket 150 can also be directly set as a cylindrical structure with an open lower end, that is, the connecting plate 151 and the installation cylinder 158 can be set as an integral structure.

[0080] Figure 6 for Figure 3 A magnified view of the local structure at point VI. Please refer to the diagram. Figures 2-6 In this embodiment, the upper end of the connecting cylinder 137 of the rotating assembly 130 is fixedly connected to the lower end of the rotating cylinder 138, and the connecting cylinder 137 and the rotating cylinder 138 are coaxially arranged. Thus, when the rotating cylinder 138 rotates, the connecting cylinder 137 rotates synchronously under the drive of the rotating cylinder 138. At the same time, the lower end of the connecting cylinder 137 is fixedly connected to the digging blade assembly 110, so that when the rotating cylinder 138 rotates, it drives the connecting cylinder 137 to rotate synchronously, and at the same time drives the digging blade assembly 110 to rotate.

[0081] Figure 7This is a schematic diagram of the rotating cylinder 138 in the ballast excavation device 100 provided in this embodiment. Figure 8 This is a schematic diagram of the connecting cylinder 137 in the ballast excavation device 100 provided in this embodiment. Please refer to the diagram for further details. Figures 2-8 Specifically, the lower end of the rotating cylinder 138 has a waist-shaped hole 1363, meaning the lower opening of the rotating cylinder 138 is waist-shaped. The lower end of the drive assembly 140 extends out of the rotating cylinder 138 through this waist-shaped hole 1363. The upper end of the connecting cylinder 137 has two parallel planes 1373, which mate with the plane of the waist-shaped hole 1363.

[0082] The oblong hole 1363 can be considered as a hole formed by splicing a square and semicircles at opposite ends of the square. The square in the middle has two planes connecting the two arc surfaces. The two parallel planes 1373 of the connecting cylinder 137 respectively abut and engage with the two planes of the oblong hole 1363, thereby realizing the transmission of rotational torque between the connecting cylinder 137 and the rotating cylinder 138. In other words, in this embodiment, the rotation axis A of the rotating assembly 130 is the axis of the rotating cylinder 138, or the axis of the connecting cylinder 137.

[0083] Meanwhile, the connecting cylinder 137 is also provided with a first flange 1371, which has multiple bolt holes distributed circumferentially along the connecting cylinder 137. The lower end of the rotating cylinder 138 is fixedly connected to the first flange 1371 by bolts, and the connecting cylinder 137 rotates synchronously with the rotating cylinder 138.

[0084] Please refer to the reference again. Figures 2-6 In this embodiment, the drive assembly 140 includes a drive motor 141, a drive shaft 142, and a drive sprocket 143 connected sequentially via splines. Specifically, the drive motor 141 and drive shaft 142 are connected via splines, and the drive shaft 142 and drive sprocket 143 are connected via splines. Simultaneously, the rotational driving force generated by the drive motor 141 is transmitted to the drive sprocket 143 through the drive shaft 142, causing the drive sprocket 143 to rotate. The drive shaft 142 and drive sprocket 143 are coaxially arranged, and the rotation axis B of the drive assembly 140 is the axis of the drive shaft 142, or in other words, the axis of the drive sprocket 143. The drive sprocket 143 meshes with the digging chain 120, so that when the drive sprocket 143 rotates, it can drive the digging chain 120 to move relative to the digging cutter assembly 110 for ballast excavation operations.

[0085] The drive motor 141 is fixedly connected to the upper end of the connecting cylinder 137, and when the connecting cylinder 137 is connected to the rotating cylinder 138, the drive motor 141 is located inside the rotating cylinder 138. A heat dissipation hole 1362 is provided on the peripheral wall of the rotating cylinder 138, and the heat dissipation hole 1362 communicates with the inner cavity of the rotating cylinder 138, thus achieving heat dissipation and cooling of the drive motor 141 through the heat dissipation hole 1362. Simultaneously, the heat dissipation hole 1362 can also be used for the wiring connection of the drive motor 141.

[0086] Furthermore, the upper end of the connecting cylinder 137 is provided with a boss 1376 located on the upper side of two parallel planes 1373. A through hole inside the connecting cylinder 137 for the drive shaft 142 to pass through the boss 1376, thus forming a hollow boss 1376. The drive motor 141 is fixedly supported on the upper end face of the boss 1376, and the upper end of the drive shaft 142 extends into the boss 1376 and connects to the drive motor 141. The outer peripheral wall of the boss 1376 is provided with a first screw plug hole and a second screw plug hole. The first screw plug hole and the second screw plug hole are staggered in the height direction, and are located at different circumferential positions, i.e., in... Figure 6 In the cross-sectional structure shown, the first and second screw plug holes are distributed one above the other and one to the left and one to the right. Specifically, the first screw plug hole is positioned higher than the second screw plug hole, allowing oil to be injected through it; that is, the first screw plug hole serves as the oil injection hole. The second screw plug hole allows for the installation of oil level indicators and for checking the oil level. Screw plugs are installed in both the first and second screw plug holes. Correspondingly, the rotating cylinder 138 also has through holes corresponding to the first and second screw plug holes, allowing for observation of the contents of the first and second screw plug holes, or for operations such as adding lubricating oil.

[0087] The drive shaft 142 is supported within the connecting cylinder 137 by bearings, and the lower end of the drive shaft 142 extends from the lower end of the connecting cylinder 137 and is connected to the drive sprocket 143. Further, the drive assembly 140 also includes a positioning plate 145 disposed at the lower end of the drive shaft 142. Specifically, the lower end of the drive shaft 142 is provided with a spline, which extends from the lower end of the connecting cylinder 137 and is connected to the drive sprocket 143 via the spline. The positioning plate 145 is then fixed to the lower end face of the drive shaft 142, supporting the drive sprocket 143 on its underside. Thus, the positioning plate 145 limits the axial position of the drive sprocket 143 to prevent it from disengaging from the drive shaft 142.

[0088] A second bearing 182 is provided between the lower end of the drive shaft 142 and the connecting cylinder 137, and the drive shaft 142 is rotatably supported in the connecting cylinder 137 by the second bearing 182.

[0089] Furthermore, the bearing also includes a first bearing 181 disposed between the upper end of the drive shaft 142 and the connecting cylinder 137, that is, the first bearing 181 and the second bearing 182 are arranged vertically at intervals. The first bearing 181 is supported between the upper end of the drive shaft 142 and the connecting cylinder 137, and the second bearing 182 is supported between the lower end of the drive shaft 142 and the connecting cylinder 137. At the same time, the ballast excavation device 100 also includes a partition sleeve 183 disposed between the first bearing 181 and the second bearing 182, with both ends of the partition sleeve 183 supported by the inner rings of the first bearing 181 and the second bearing 182, respectively.

[0090] A first limiting step 144 is provided at the upper end of the drive shaft 142. The upper end face of the inner ring of the first bearing 181 abuts against the lower part of the first limiting step 144. A second limiting step 1374 is provided inside the connecting cylinder 137. The lower end face of the outer ring of the first bearing 181 abuts against the upper part of the second limiting step 1374. That is, when the drive shaft 142 is installed into the connecting cylinder 137, the first limiting step 144 and the second limiting step 1374 are staggered vertically, and the first bearing 181 is limited between the first limiting step 144 and the second limiting step 1374 in the vertical direction. Optionally, the second limiting step 1374 is approximately located inside the connecting cylinder 137 at the same height as the first flange 1371.

[0091] Furthermore, a retaining ring 186 is also installed on the upper side of the first bearing 181, and the retaining ring 186 is located on the upper side of the connecting cylinder 137 corresponding to the first bearing 181. The retaining ring 186 abuts against the upper end face of the outer ring of the first bearing 181, so as to limit the outer ring of the first bearing 181 through the retaining ring 186 and the second limiting step 1374; at the same time, the inner ring of the first bearing 181 is limited through the first limiting step 144 and the partition sleeve 183.

[0092] The lower end of the connecting cylinder 137 is also provided with a third limiting step 1375. The upper end face of the outer ring of the second bearing 182 abuts against the lower part of the third limiting step 1375, and the upper end face of the inner ring of the second bearing 182 abuts against the partition sleeve 183.

[0093] Figure 9 for Figure 3 A magnified view of the local structure at point IX. Please refer to the reference. Figure 3 and Figure 9 Specifically, a bearing cap 184 is bolted to the lower end of the connecting cylinder 137 to press the second bearing 182 into the connecting cylinder 137. A sealing structure 170 is also provided between the bearing cap 184 and the drive shaft 142 to prevent external water and other impurities from entering the bearing through the sealing effect of the sealing structure 170.

[0094] Furthermore, a wear-resistant sleeve 185 is fitted onto the drive shaft 142. The upper end of the wear-resistant sleeve 185 abuts against the lower end face of the inner ring of the second bearing 182, thereby limiting the inner ring of the second bearing 182. A sealing structure 170 is disposed between the bearing cap 184 and the wear-resistant sleeve 185. The wear-resistant sleeve 185 is located above the drive sprocket 143 along the axial direction of the drive shaft 142. The drive sprocket 143 is located between the wear-resistant sleeve 185 and the positioning plate 145, thus limiting the drive sprocket 143 on the drive shaft 142 by the wear-resistant sleeve 185 and the positioning plate 145.

[0095] By designing the structure of the drive assembly 140 and the rotary drum 136, during installation, each part of the drive assembly 140 can be installed onto the connecting cylinder 137, and then the connecting cylinder 137 can be connected to the rotating cylinder 138, thus achieving the installation of the drive assembly 140 and the rotary drum 136.

[0096] Figure 10 This is a schematic diagram of the excavation blade assembly 110 in the ballast excavation device 100 provided in this embodiment. Figure 11 This is a schematic diagram of the tail structure of the main beam 111 in the ballast excavation device 100 provided in this embodiment. Please refer to the diagram. Figures 2-11 In this embodiment, the digging cutter assembly 110 includes a main beam 111, a driven sprocket 114, and a guide groove 112. The main beam 111 is a strip-shaped component, and the guide groove 112 is fixedly connected to both sides of the main beam 111 in the width direction and extends along the length direction of the main beam 111. The digging chain 120 is installed in the guide groove 112. A connecting ring 113 is provided at one end of the main beam 111 in the length direction. The connecting ring 113 is fixedly connected to the connecting cylinder 137 by bolts, and the connecting ring 113 and the connecting cylinder 137 are coaxially arranged. Thus, when the connecting ring 113 rotates under the drive of the rotating assembly 130, the entire digging cutter assembly 110 rotates about the axis of the connecting ring 113, that is, the rotation axis C of the digging cutter assembly 110 is the axis of the connecting ring 113. Specifically, a second flange 1372 is also provided at the lower end of the connecting cylinder 137, and the connecting ring 113 of the digging cutter assembly 110 is sleeved on the lower end of the connecting cylinder 137. The connecting ring 113 is ring-shaped, and the second flange 1372 can be directly fixed to the connecting ring 113 by bolts to realize the transmission connection between the rotating assembly 130 and the digging cutter assembly 110, and play the role of supporting the main beam 111. Moreover, the central axis of the connecting ring 113 can serve as the rotation center axis of the digging cutter assembly 110.

[0097] Specifically, the connecting ring 113 is located at the tail of the main beam 111. The upper end of the connecting ring 113 is fixedly connected to the lower end of the rotary drum 136, i.e., the lower end of the connecting drum 137, by bolts. The upper end of the connecting ring 113 extends above the top surface of the main beam 111, thus ensuring that the connecting ring 113 has sufficient thickness to connect with the second flange 1372, while allowing space to be formed on the lower side of the connecting ring 113 for installing the drive sprocket 143 of the drive assembly 140. By setting the connecting ring 113 at the end of the main beam 111 and by specifically designing the connecting ring 113, the space occupied is reduced, which in turn facilitates the construction operation of the ballast excavation device 100 in areas with limited space.

[0098] The lower end of the drive shaft 142 of the drive assembly 140 extends downward from the through hole formed by the connecting ring 113, and the drive sprocket 143 connected to the lower end of the drive shaft 142 is located below the connecting ring 113. Along the length of the main beam 111, the driven sprocket 114 is located at the end of the main beam 111 away from the connecting ring 113, so that the portions of the digging chain 120 on both sides of the main beam 111 in the width direction engage with the guide groove 112, and the portions of the digging chain 120 on both sides of the main beam 111 in the length direction mesh with the drive sprocket 143 and the driven sprocket 114, respectively. When the drive sprocket 143 rotates, the digging chain 120 rotates around the main beam 111 under the drive of the drive sprocket 143.

[0099] Please continue to refer to the reference. Figures 1-9 In this embodiment, the ballast excavation device 100 further includes a first lug 152 and a second lug 153 disposed opposite to each other on the upper side of the connecting bracket. The first lug 152 and the second lug 153 are spaced apart, thus forming an installation space 154 between the first lug 152 and the second lug 153 for installing the connecting shaft 311 of the working arm 300. Both the first lug 152 and the second lug 153 have connecting holes, and the connecting shaft 311 is installed by passing a rod through the connecting holes and the connecting shaft 311.

[0100] Specifically, the connecting shaft 311 of the working arm 300 is the end structure of the working arm 300 away from the vehicle body 200. The connecting bracket 150 includes a connecting plate 151, with a first lug 152 and a second lug 153 fixedly spaced on the connecting plate 151. The connecting plate 151 is fixedly connected to the upper side of the mounting cylinder 158, and the connecting end 134 of the swing cylinder 132 is fixedly connected to the connecting plate 151 through a second positioning pin 1392. The mounting space 154 is located above the slewing assembly 130 and the drive assembly 140, and the rotation axis of the digging blade assembly 110, the rotation axis of the slewing assembly 130, and the rotation axis of the drive assembly 140 all pass through the mounting space.

[0101] 154. The installation space 154 is located directly above the slewing assembly 130 and the drive assembly 140, which helps to reduce the space occupied by the ballast excavation device 100 during operation.

[0102] According to the ballast excavation device 100 provided in this embodiment, the working principle of the ballast excavation device 100 is as follows:

[0103] In use, the ballast excavation device 100, driven by the vehicle body 200 and the working arm 300, moves to the outside of the rail 21 of the track at the location to be excavated, and the excavation blade assembly 110 of the ballast excavation device 100 is approximately parallel to the rail 21 of the track (e.g., Figure 1 (Structure shown). Then, the swing cylinder 132 operates, driving the rotary drum 136 and the connecting drum 137 to rotate, thereby causing the digging cutter assembly 110 to rotate around the axis of the connecting ring 113, so that the digging cutter assembly 110 and the digging chain 120 on it cut laterally into the ballast below the rail 21 of the track. Then, the drive motor 141 operates, driving the drive sprocket 143 to rotate through the transmission shaft 142, which in turn drives the digging chain 120 meshing with the drive sprocket 143 to rotate around the digging cutter assembly 110, thereby digging the ballast.

[0104] The ballast excavation device 100 provided in this embodiment 1 has at least the following advantages:

[0105] The ballast excavation device 100 provided in the embodiments of the present invention can side-cut into the ballast for excavation operations, with flexible movement and high construction efficiency. At the same time, the rotation axis of the excavation blade assembly 110, the rotation axis of the slewing assembly 130, and the rotation axis of the drive assembly 140 in the ballast excavation device 100 are coaxially arranged. Moreover, the slewing assembly 130 is arranged below the connecting bracket 150, so that the installation space 154 for connecting the working arm of the excavation equipment can be arranged above the connecting bracket 150 and directly above the slewing assembly 130. This can further reduce the volume of the ballast excavation device 100 and the space occupied during its operation, enabling it to carry out ballast excavation operations in areas with limited space such as bridges and tunnels.

[0106] This embodiment 1 not only achieves a smaller width, but also ensures that the overall operating space occupies no more than 300mm, which is beneficial for excavation operations in narrower working environments. Moreover, because it uses a swing cylinder, the ballast excavation device 100 has a larger rotation angle range, which can achieve a rotation of nearly 360°, resulting in a wider and more flexible operating range while occupying less space.

[0107] Example 2

[0108] Figure 12This is a partial structural diagram of the ballast excavation device 100 provided in this embodiment. Figure 13 This is a partial structural cross-sectional schematic diagram of the ballast excavation device 100 provided in this embodiment. Please refer to the attached diagram. Figures 2-13 This embodiment provides a ballast excavation device 100, which is largely the same as the ballast excavation device 100 provided in Embodiment 1. The similarities will not be repeated here. The difference lies in the structure of the slewing power component 131.

[0109] In the ballast excavation device 100 provided in this embodiment, the rotation power component 131 is a telescopic cylinder 133. The telescopic cylinder 133 is located on the outer periphery of the rotary drum 136, and the rotary drum 136 is driven to rotate by the telescopic action of the telescopic cylinder 133. Specifically, a rotary lug 1361 is provided on the outer peripheral wall of the rotary drum 136, and the telescopic cylinder 133 is located on the radially outer side of the rotary drum 136. One end of the telescopic cylinder 133 is hinged to the rotary lug 1361, so that when the telescopic cylinder 133 extends or retracts, it can drive the rotary drum 136 to rotate. In this embodiment, the rotary drum 136 is an integral structure, with its upper end rotatably connected to the connecting bracket 150 through a rotary bearing 160, and its lower end fixedly connected to the connecting ring 113 of the excavation cutter assembly 110.

[0110] Optionally, the connecting bracket 150 includes a first mounting plate 155 and a second mounting plate 156, which are connected to each other in an L-shape. The first mounting plate 155 is horizontally positioned above the rotary drum 136, and the rotary drum 136 is rotatably connected to the first mounting plate 155 via a slewing bearing 160. The rotary drum 136 and the second mounting plate 156 are located at opposite ends of the first mounting plate 155. After installation, the second mounting plate 156 is located below the first mounting plate 155, thus the second mounting plate 156 is located radially outside the rotary drum 136, and the end of the telescopic cylinder 133 away from the rotary drum 136 is rotatably connected to the second mounting plate 156. Specifically, the telescopic cylinder 133 includes a cylinder body and a piston that slides with the cylinder body. One end of the piston rod extends out of the cylinder body to form the driving end 135 of the telescopic cylinder 133, and the end of the cylinder body away from the driving end 135 forms the connecting end 134 of the telescopic cylinder 133. The cylinder body is rotatably connected to the second mounting plate 156, and the piston rod is rotatably connected to the rotary lug 1361 on the rotary drum 136 via a pin. When the oil pressure inside the telescopic cylinder 133 changes, the length of the telescopic cylinder 133 changes, thereby realizing the rotation of the rotary drum 136. A bracket lug 157 is provided on the second mounting plate 156, and the cylinder body of the telescopic cylinder 133 is rotatably connected to the bracket lug 157. At the same time, the extension and retraction stroke of the telescopic cylinder 133 can drive the rotary drum 136 to rotate more than 90°. Thus, under the drive of the rotary drum 136, the digging cutter assembly 110 can rotate more than 90°, and the ballast digging device 100 can complete the screening work of the entire ballast area within a limited space.

[0111] In this embodiment, the drive motor 141 of the drive assembly 140 is disposed on the upper side of the first mounting plate 155. The drive shaft 142 of the drive assembly 140 is rotatably disposed inside the rotary drum 136 via bearings, and the upper end of the drive shaft 142 is fixedly connected to the drive motor 141. The lower end of the drive shaft 142 extends out of the rotary drum 136 and is fixedly connected to the drive sprocket 143. Thus, the power transmission between the drive motor 141 and the drive sprocket 143 is realized through the drive shaft 142. Since the drive motor 141 of the drive assembly 140 is disposed on the upper side of the first mounting plate 155, and only the drive shaft 142 passes through the rotary drum 136, the lower end of the rotary drum 136 can be directly fixedly connected to the connecting ring 113, thereby realizing the rotation drive of the digging cutter blade assembly 110. Specifically, a third flange 1364 is provided at the lower end of the rotary drum 136, and the third flange 1364 is coaxially fixedly connected to the connecting ring 113 by bolts.

[0112] Furthermore, the mounting cylinder 158 is sleeved around the drive motor 141. The lower end of the mounting cylinder 158 is fixedly connected to the first mounting plate 155, and the upper end of the mounting cylinder 158 is fixedly connected to the connecting plate 151. Thus, the first and second lugs 152 and 153 on the connecting plate 151, as well as the mounting space 154 formed between the first and second lugs 152 and 153, are all located above the drive motor 141. Furthermore, the mounting cylinder 158 has a groove on its side (e.g.,...). Figure 10 As shown, the inner cavity of the mounting cylinder 158 is connected to the outside through the side of the mounting cylinder 158, thereby realizing the wiring connection and heat dissipation of the drive motor 141.

[0113] The ballast excavation device 100 provided in this embodiment 2 has at least the following advantages:

[0114] Compared to existing ballast excavation devices, the rotation axes of the excavating cutter assembly 110, the slewing assembly 130, and the drive assembly 140 in this ballast excavation device 100 are coaxially arranged. Furthermore, the mounting space 154 for the connecting shaft used to connect the excavation equipment's working arm is located directly above the slewing assembly 130. This further reduces the size of the ballast excavation device 100 and the space it occupies during operation, enabling it to perform ballast excavation operations in areas with limited space, such as bridges and tunnels. Compared to the ballast excavation device 100 provided in Embodiment 1, it also has the advantages of lower cost and higher torque.

[0115] Example 3

[0116] Figure 14 This is a structural schematic diagram of the railway ballast excavation equipment 10 provided in this embodiment from another perspective. Please refer to the reference. Figures 1-14This embodiment also provides a railway ballast excavation device 10, which includes a car body 200, a working arm 300, and a ballast excavation device 100. One end of the working arm 300 is connected to the car body 200, and the other end of the working arm 300 forms a connecting shaft 311 connected to the first lug 152 and the second lug 153 of the side-cutting mounting device. In use, the car body 200 cooperates with the track to drive the ballast excavation device 100 to travel along the track. The structure of the ballast excavation device 100 can be any of the above-described types.

[0117] Furthermore, a guide wheel structure 210 is also provided below the vehicle body 200. Specifically, the guide wheel structure 210 includes a front guide wheel 211, a rear guide wheel 212, a guide wheel bracket 213, and a guide cylinder 214. The guide cylinder 214 can control the engagement and disengagement of the guide wheel from the track.

[0118] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A ballast excavation device, characterized in that, include: Connecting bracket (150); A slewing assembly (130) includes a slewing power component (131) and a slewing cylinder (136) both located below the connecting bracket (150). One end of the slewing power component (131) is connected to the connecting bracket (150), and the other end of the slewing power component (131) is connected to the slewing cylinder (136) to drive the slewing cylinder (136) to rotate relative to the connecting bracket (150). The upper end of the slewing cylinder (136) is rotatably connected to the connecting bracket (150) through a slewing bearing (160). A digging blade assembly (110) is located below the slewing cylinder (136). The lower end of the slewing cylinder (136) is fixedly connected to the digging blade assembly (110), and the slewing cylinder (136) is used to drive the digging blade assembly (110) to rotate under the drive of the slewing power component (131). A digging chain (120) is wound around the digging cutter assembly (110), and the digging chain (120) is movably connected to the digging cutter assembly (110); and A drive assembly (140) is connected to the digging chain (120) to drive the digging chain (120) to move relative to the digging blade assembly (110); The rotation axis of the digging cutter assembly (110), the rotation axis of the rotary drum (136), and the rotation axis of the drive assembly (140) are coaxially arranged. The rotary drum (136) includes a rotating cylinder (138) and a connecting cylinder (137). The upper end of the rotating cylinder (138) is closed, and the drive shaft (1321) is fixedly connected to the upper side of the rotating cylinder (138) by bolts. The lower end of the rotating cylinder (138) is open, and the upper end of the connecting cylinder (137) extends into the rotating cylinder (138) from the lower end of the rotating cylinder (138) and is fixedly connected to the rotating cylinder (138). The lower end of the connecting cylinder (137) is fixedly connected to the digging cutter assembly (110). Driven by the cylinder (132), the digging cutter assembly (110) is rotated via the connecting cylinder (137). The lower end of the drive assembly (140) extends from the lower end of the connecting cylinder (137). A second flange (1372) is provided at the lower end of the connecting cylinder (137). The digging cutter assembly (110) includes a beam (111) with a connecting ring (113) at one end. The connecting ring (113) is sleeved on the lower end of the connecting cylinder (137) and is fixedly connected to the second flange (1372) by bolts. The lower end of the drive shaft (142) extends from the lower end of the connecting cylinder (137) and is connected to the drive sprocket (143) located below the connecting ring (113) via spline drive. The lower end of the drive shaft (142) of the drive assembly (140) extends downward from the through hole formed by the connecting ring (113), and the drive sprocket (143) connected to the lower end of the drive shaft (142) is located on the lower side of the connecting ring (113); along the length direction of the beam, the driven sprocket (114) is located at the end of the beam away from the connecting ring.

2. The ballast excavation device according to claim 1, characterized in that, The excavator blade assembly (110) includes a main beam (111) and a connecting ring (113) located at one end of the main beam (111). The upper end of the connecting ring (113) is fixedly connected to the lower end of the rotary drum (136) by bolts. The upper end of the connecting ring (113) is higher than the top surface of the main beam (111), and the lower side of the connecting ring (113) forms a space for installing the drive sprocket (143) of the drive assembly (140).

3. The ballast excavation device according to claim 1 or 2, characterized in that, The slewing bearing (160) includes an inner ring (161) and an outer ring (162) that rotate with each other. The inner ring (161) is connected to the slewing cylinder (136), and the outer ring (162) is connected to the connecting bracket (150).

4. The ballast excavation device according to claim 3, characterized in that, The rotary power component (131) is a swing cylinder (132). The swing cylinder (132) includes a housing (1322) and a drive shaft (1321) rotatably disposed in the housing (1322). The housing (1322) is fixedly connected to the connecting bracket (150), and the drive shaft (1321) is fixedly connected to the rotary drum (136). The drive shaft (1321) and the rotary drum (136) are coaxially arranged.

5. The ballast excavation device according to claim 4, characterized in that, The swing cylinder (132) is disposed on the upper side of the rotary drum (136), the drive assembly (140) is disposed in the rotary drum (136), and the lower end of the drive assembly (140) extends from the lower end of the rotary drum (136) to be connected to the digging chain (120) for transmission.

6. The ballast excavation device according to claim 5, characterized in that, The drive assembly (140) includes a drive motor (141), a drive shaft (142), and a drive sprocket (143) connected in sequence via spline transmission. The drive motor (141) is fixedly connected to the upper end of the connecting cylinder (137) and located inside the rotating cylinder (138). The drive shaft (142) is supported inside the connecting cylinder (137) by bearings, and the lower end of the drive shaft (142) extends from the lower end of the connecting cylinder (137) and is fixedly connected to the drive sprocket (143). The drive sprocket (143) meshes with the digging chain (120) to drive the digging chain (120) to move relative to the digging cutter assembly (110).

7. The ballast excavation device according to claim 6, characterized in that, The rotating cylinder (138) has heat dissipation holes (1362) on its peripheral wall. The heat dissipation holes (1362) are connected to the inner cavity of the rotating cylinder (138) to dissipate heat from the drive motor (141).

8. The ballast excavation device according to claim 6, characterized in that, The bearing includes a second bearing (182), which is sleeved on the lower end of the transmission shaft (142), and a third limiting step (1375) is provided at the lower end of the inner wall of the connecting cylinder (137), and the outer ring of the second bearing (182) abuts against the lower part of the third limiting step (1375).

9. The ballast excavation device according to claim 8, characterized in that, The lower end of the connecting cylinder (137) is fixedly connected to a bearing cover (184) by bolts, so that the second bearing (182) is pressed into the connecting cylinder (137) by the bearing cover (184); a sealing structure (170) is also provided between the bearing cover (184) and the transmission shaft (142).

10. The ballast excavation device according to claim 9, characterized in that, The drive shaft (142) is fitted with a wear-resistant sleeve (185), the upper end of which abuts against the lower end face of the inner ring of the second bearing (182) to limit the inner ring of the second bearing (182); the sealing structure (170) is disposed between the bearing cap (184) and the wear-resistant sleeve (185); a positioning plate (145) is installed at the lower end of the drive shaft (142), and the positioning plate (145) is supported on the lower side of the drive sprocket (143); the drive sprocket (143) is limited on the drive shaft (142) by the wear-resistant sleeve (185) and the positioning plate (145).

11. The ballast excavation device according to claim 8, characterized in that, The bearing further includes a first bearing (181) spaced above the second bearing (182), and the drive assembly (140) further includes a partition sleeve (183), the two ends of which are respectively supported on the inner ring of the first bearing (181) and the inner ring of the second bearing (182); the drive shaft (142) is provided with a first limiting step (144), the inner ring of the first bearing (181) abuts against the lower part of the first limiting step (144), the connecting cylinder (137) is provided with a second limiting step (1374), and the outer ring of the first bearing (181) abuts against the upper part of the second limiting step (1374); the connecting cylinder (137) is equipped with a retaining ring (186) on the upper side corresponding to the first bearing (181), and the retaining ring (186) abuts against the upper side of the outer ring of the first bearing (181).

12. The ballast excavation device according to claim 6, characterized in that, The lower end of the rotating cylinder (138) has a waist-shaped hole (1363) to open the lower end of the rotating cylinder (138), and the upper end of the connecting cylinder (137) has two parallel planes (1373); the two parallel planes (1373) are engaged with the plane of the waist-shaped hole (1363) so that the connecting cylinder (137) and the rotating cylinder (138) are coaxially arranged.

13. The ballast excavation device according to claim 12, characterized in that, The upper end of the connecting cylinder (137) is provided with a first flange (1371), and the first flange (1371) is located on the lower side of the two parallel planes (1373); the lower end of the rotating cylinder (138) is fixedly connected to the first flange (1371) by bolts.

14. The ballast excavation device according to claim 12, characterized in that, The upper end of the connecting cylinder (137) is also provided with a boss (1376) located on the upper side of the two parallel planes (1373). A through hole in the connecting cylinder (137) for the transmission shaft (142) to pass through the boss (1376) is provided so that the boss (1376) is a hollow structure. The drive motor (141) is fixedly supported on the upper end face of the boss (1376). The outer peripheral wall of the boss (1376) is provided with a first screw plug hole and a second screw plug hole, which are staggered in the height direction.

Images