Anti-arching mechanism for crawler device and crawler crane

Abstract

The utility model discloses an anti-arching mechanism for crawler device and crawler crane, the anti-arching mechanism for crawler device comprises a limit seat and an anti-arching assembly, the limit seat is arranged on the crawler frame of crawler device and forms a lifting channel extending towards the crawler plate, the anti-arching assembly comprises a pressing block and an elastic piece, the pressing block is arranged on the limiting seat, and the elastic piece is arranged on the lifting channel. The pressing block is arranged in the lifting channel in a lifting mode, and the elastic piece is arranged between the pressing block and the track frame and used for pressing the pressing block on the track shoe so as to restrain the arching trend of the track shoe, or the arching track shoe can be recovered to the horizontal state along with movement of the track device, smoothness of the track is guaranteed, the track device can run smoothly, and in addition, the elastic piece is arranged on the pressing block. The elastic piece can also provide a buffering effect for the pressing block, absorb energy generated by collision of the track shoe and the pressing block and reduce vibration of the pressing block and the track frame, and therefore the purpose of reducing noise is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of crawler equipment, and in particular relates to an anti-arching mechanism for a crawler device and a crawler crane. Background Art

[0002] The crawler travel system is an important part of the crawler crane. The quality of its travel performance directly affects the equipment safety and user operation experience. The crawler crane's travel system has a large load-bearing capacity and requires a large driving force. The flatness of the crawler track plays a decisive role in the crawler's travel performance. The crawler chain link includes multiple mutually hinged track plates, which have loose sides and tight sides. When the driving wheel engages the crawler to drive the crawler crane to travel, the connection position of the adjacent crawler plates arches upward due to the force, and the crawler chain link is uneven, which affects the crawler crane's travel performance. In addition, when the crawler chain link arches, it will impact with the structural parts, produce abnormal noise, and cause great noise pollution. Utility Model Content

[0003] In view of the above-mentioned defects or shortcomings, the utility model provides an anti-arching mechanism for a crawler device and a crawler crane, aiming to solve the technical problems that the existing crawler device has an arching phenomenon, affects the driving performance and generates noise pollution.

[0004] To achieve the above-mentioned purpose, the utility model provides an anti-arching mechanism for a crawler device, wherein the anti-arching mechanism for a crawler device includes a limit seat and an anti-arching assembly; the limit seat is arranged on the track frame of the crawler device, and forms a lifting channel extending toward the track plate; the anti-arching assembly includes a pressure block and an elastic member, the pressure block is liftably arranged in the lifting channel, and the elastic member is placed between the pressure block and the track frame, and is used to press the pressure block onto the track plate.

[0005] In an embodiment of the utility model, a mounting slot is provided on the limit seat, and the extension direction of the mounting slot is set to be consistent with the extension direction of the lifting channel. The anti-arching component also includes a limiting shaft, which is passed through the mounting slot and connected to the pressure block.

[0006] In an embodiment of the utility model, the limit seat includes a first limit plate and a second limit plate, which are spaced apart along the transmission direction of the track plate to form a lifting channel, and both the first limit plate and the second limit plate are provided with installation slots.

[0007] In the embodiment of the utility model, the pressure block is used to extend a positioning rod toward one side of the crawler frame, the positioning rod is lifted and lowered through the process hole of the crawler frame, and the elastic member is sleeved on the positioning rod.

[0008] In an embodiment of the utility model, the number of the positioning rods is at least two, and at least two positioning rods are sequentially spaced apart on the pressure block along the width direction of the track shoe.

[0009] In an embodiment of the utility model, the pressure block includes a lifting part and a pressing part. The lifting part can be lifted and lowered in the lifting channel. The end of the lifting part facing away from the track shoe abuts against the elastic member. The lifting part faces the track shoe and extends out of the lifting channel and is connected with the pressing part. There are two pressing parts. The two pressing parts are arranged on the lifting part along the width direction of the track shoe, separated by the toothed part of the track shoe, and are used to abut against the plate body of the track shoe respectively.

[0010] In an embodiment of the utility model, a pressing surface abutting against the track shoe is formed on the pressing portion, and the pressing surface is sequentially provided with a first transition surface and a second transition surface along the transmission direction of the track shoe, and the first transition surface and the second transition surface are both extended away from the track shoe in a direction away from each other from the connection point.

[0011] In an embodiment of the utility model, the limit seat is located between two adjacent supporting wheels, and a clearance surface is formed on the side of the pressing part away from the track shoe, and the clearance surface is inclined downward in the direction from the lifting part toward the corresponding supporting wheel.

[0012] In order to achieve the above objectives, the utility model also provides a crawler crane, wherein the crawler crane includes a crawler chassis and the anti-arching mechanism for the above-mentioned crawler device, a plurality of supporting wheels are arranged on the lower crawler frame of the crawler chassis in sequence and at intervals, and the anti-arching mechanism for the crawler device is provided between any two adjacent supporting wheels.

[0013] In an embodiment of the utility model, the lower track frame includes a transverse plate portion and two vertical plate portions. The transverse plate portion is extended along the transmission direction of the track plate, and the two vertical plate portions are relatively spaced on the transverse plate portion along the width direction of the transverse plate portion. The limit seat is located between the two vertical plate portions.

[0014] Through the above technical solution, the anti-arching mechanism for the crawler device provided by the embodiment of the utility model has the following beneficial effects:

[0015] When the above-mentioned anti-arching mechanism for the crawler device is used, the pressure block and elastic member in the anti-arching mechanism can apply pressure to the track shoe to suppress the tendency of the track shoe to arch, or restore the arched track shoe to a horizontal state as the crawler device moves. The greater the arching force of the track shoe, the greater the pressure applied by the elastic member, thereby ensuring the flatness of the track and allowing the crawler device to run smoothly. At the same time, the elastic member provides a buffering effect for the pressure block while applying pressure to the pressure block, absorbing the energy of the impact between the track shoe and the pressure block, reducing the vibration of the pressure block and the track frame, thereby achieving the purpose of reducing noise.

[0016] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide an understanding of the present utility model and form a part of the specification. Together with the following specific embodiments, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the accompanying drawings:

[0018] Figure 1 is a schematic diagram of the chassis of a crawler crane according to an embodiment of the present utility model;

[0019] Figure 2 is Figure 1 a partial enlarged view of part A in

[0020] Figure 3 is a schematic diagram of an anti-arching mechanism from one perspective according to an embodiment of the present utility model;

[0021] Figure 4 is a schematic diagram of the anti-arching mechanism from another perspective according to an embodiment of the present utility model.

[0022] Explanation of reference numerals

[0023] 1 Limiting seat 10 Mounting notch

[0024] 11 First limiting plate 12 Second limiting plate

[0025] 2 Pressing block 21 Positioning rod

[0026] 22 Lifting part 23 Pressing part

[0027] 231 First transition surface 232 Second transition surface

[0028] 233 Clearance surface 3 Elastic member

[0029] 4 Lower crawler frame 41 Horizontal plate part

[0030] 42 Vertical plate part 5 Crawler plate

[0031] 51 Toothed part 6 Idler wheel

[0032] 7 Limiting shaft 8 Driving wheel Specific embodiments

[0033] The following are detailed descriptions of specific embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present utility model and do not limit the present utility model.

[0034] The anti-arching mechanism for a crawler device and a crawler crane of the present utility model will be described below with reference to the accompanying drawings.

[0035] As Figure 2As shown in the figure, the utility model provides an anti-arching mechanism for a crawler device. The anti-arching mechanism for the crawler device includes:

[0036] A limit seat 1 is provided on the crawler frame of the crawler device and forms a lifting channel extending towards the crawler plate 5;

[0037] The anti-arching component includes a pressing block 2 and an elastic member 3. The pressing block 2 is arranged in the lifting channel in a liftable manner, and the elastic member 3 is placed between the pressing block 2 and the crawler frame and is used to press the pressing block 2 against the crawler plate 5.

[0038] When using the above anti-arching mechanism for the crawler device, the anti-arching component can apply pressure to the crawler plate 5 to inhibit the arching tendency of the crawler plate 5, or restore the arched crawler plate 5 to a horizontal state as the crawler device moves, ensuring the flatness of the crawler and enabling the crawler device to run smoothly; when the crawler plate 5 impacts the pressing block 2 in the anti-arching component, the pressing block 2 can move along the lifting channel to avoid rigid contact with the crawler plate 5. During the process of the pressing block 2 moving along the lifting channel, the elastic member 3 provides a buffering effect for the pressing block 2, absorbs the energy of the impact between the crawler plate 5 and the pressing block 2, and reduces the vibration of the pressing block 2 and the crawler frame, thereby achieving the purpose of reducing noise. In addition, the elastic member 3 is also provided with a certain pre-tightening force, which can assist the pressing block 2 to quickly reset.

[0039] Specifically, the limit seat 1 can be fixed on the crawler frame by welding or by bolt connection; the elastic member 3 can be set as a metal compression spring, an air spring, etc.

[0040] As Figure 3 shown, in the embodiment of the present utility model, the limit seat 1 is provided with an installation notch 10, and the extending direction of the installation notch 10 is set to be the same as the extending direction of the lifting channel. The anti-arching component further includes a limit shaft 7, and the limit shaft 7 is inserted into the installation notch 10 and connected to the pressing block 2. When the limit shaft 7 abuts against the top surface of the installation notch 10, the pressing block 2 moves to the highest point. The installation notch 10 and the limit shaft 7 cooperate to limit the maximum moving height of the pressing block 2. Specifically, the maximum moving height of the pressing block 2 is set such that when the pressing block 2 moves to the highest point, there is still a safety margin between the upper end surface of the pressing block 2 and the crawler frame, and the safety margin is not less than the length of the elastic member 3 when it is in the maximum compression amount, thereby playing a role in protecting the elastic member 3.

[0041] Furthermore, the limit shaft 7 can be set as a pin shaft and fixed to the pressing block 2 by a limit pin; or the limit shaft 7 can also be set as a bolt and fixed to the pressing block 2 by a nut.

[0042] As Figure 4As shown, in the embodiment of the utility model, the limit seat 1 includes a first limit plate 11 and a second limit plate 12, which are arranged at intervals along the transmission direction of the track shoe 5 to form a lifting channel, and the first limit plate 11 and the second limit plate 12 are provided with mounting notches 10. The first limit plate 11 and the second limit plate 12 are used to limit the pressing block 2 along the transmission direction of the track shoe 5 to prevent it from being driven out of the working position by the track shoe 5; the first limit plate 11 and the second limit plate 12 are provided with mounting notches 10, which can reduce the load of a single limit plate on the one hand, and on the other hand, because both ends of the limit shaft 7 are subjected to the force of the limit plate, the limit shaft 7 and the pressing block 2 are in a state of torque balance, which prevents the pressing block 2 from tilting to one side and ensures the stability of the pressing block 2.

[0043] Specifically, a slide rail mechanism may be provided between the pressing block 2 and the two limiting plates to reduce the friction between the pressing block 2 and the limiting plates, while ensuring the stability of the movement of the pressing block 2. Alternatively, the surface layer of the pressing block 2 may be provided with a self-lubricating material, such as nylon, to reduce the wear of the pressing block 2. Furthermore, the first limiting plate 11 and the second limiting plate 12 may also be provided with limiting portions extending in opposite directions, so as to limit the pressing block 2 in the width direction of the track shoe 5.

[0044] like Figure 3 and Figure 4 As shown, in the embodiment of the utility model, the pressure block 2 is used to extend a positioning rod 21 toward one side of the track frame, the positioning rod 21 can be lifted and lowered through the process hole of the track frame, and the elastic member 3 is sleeved on the positioning rod 21. Specifically, the elastic member 3 is configured as a metal compression spring sleeved on the positioning rod 21, and the positioning rod 21 can limit the elastic member 3 to avoid compression and distortion of the elastic member 3 due to poor parallelism of the relative surfaces of the track frame and the pressure block 2. Of course, the utility model is not limited to this, and the positioning rod 21 can also be eliminated. The elastic member 3 is configured to include an upper pressure plate and a lower pressure plate extending along the width direction of the track shoe 5 and a plurality of compression springs arranged between the upper and lower pressure plates, and the upper and lower pressure plates respectively abut the track frame and the pressure block 2.

[0045] In the embodiment of the utility model, the number of the positioning rods 21 is at least two, and at least two positioning rods 21 are arranged on the pressure block 2 in sequence along the width direction of the track shoe 5 to ensure that the elastic force on the upper end of the pressure block 2 is evenly distributed. Specifically, the number of the positioning rods 21 is set to two, and the two positioning rods 21 are symmetrically arranged. Furthermore, the installation notch 10 and the limiting shaft 7 are also used to limit the minimum moving height of the pressure block 2. When the limiting shaft 7 abuts against the bottom surface of the installation notch 10, the pressure block 2 moves to the lowest point, and the positioning rod 21 is satisfied that it does not fall out of the process hole of the track frame.

[0046] like Figure 4As shown, in the embodiment of the present utility model, the pressing block 2 includes a lifting part 22 and a pressing part 23. The lifting part 22 is disposed in the lifting channel in a liftable manner. One end of the lifting part 22 facing away from the crawler plate 5 abuts against the elastic member 3. One end of the lifting part 22 facing the crawler plate 5 and extending out of the lifting channel is connected with the pressing part 23. The number of the pressing parts 23 is two. The two pressing parts 23 are arranged on the lifting part 22 at intervals along the width direction of the crawler plate 5 and are spaced from the toothed part 51 of the crawler plate 5, and are respectively used for abutting against the plate body of the crawler plate 5. In the crawler device, the crawler plate 5 is provided with a toothed part 51 (generally arranged at the middle position of the crawler plate 5) for meshing with the driving wheel 8. By arranging the spaced pressing parts 23, the toothed part 51 can be avoided, so as to avoid abrasion of the toothed part 51 and ensure the reliability of the meshing between the crawler plate 5 and the driving wheel 8. At the same time, the two pressing parts 23 are respectively arranged on both sides of the toothed part 51, and can also play a limiting role on the crawler plate 5 to prevent the crawler from derailing.

[0047] In the embodiment of the present utility model, a pressing surface for abutting against the crawler plate 5 is formed on the pressing part 23. The pressing surface is sequentially provided with a first transition surface 231 and a second transition surface 232 along the transmission direction of the crawler plate 5, and both the first transition surface 231 and the second transition surface 232 extend away from the crawler plate 5 in a direction away from each other from the joint. The arrangement of the first transition surface 231 and the second transition surface 232 can gradually press down the arched crawler plate 5 to reduce the impact of the crawler plate 5 on the pressing part 23. Specifically, referring to Figure 2 , the anti-arching mechanism is disposed between two adjacent idler wheels 6. The crawler plate 5 moves from left to right. After the crawler plate 5 passes the left idler wheel 6, since there is no pressure on the upper side, it arches upward. As the crawler plate 5 continues to move, the arched part of the crawler plate 5 first contacts the first transition surface 231 and gradually presses down and returns to the horizontal state during the movement. Similarly, when the crawler plate 5 moves from right to left, the arched part of the crawler plate 5 first contacts the second transition surface 232 and then gradually returns to the horizontal state. Then the first transition surface 231 and the second transition surface 232 respectively correspond to the forward direction and the backward direction of the crawler device, ensuring the smooth running of the crawler device.

[0048] In the embodiment of the present utility model, the limiting seat 1 is located between two adjacent idler wheels 6 arranged adjacent to each other. An emptying surface 233 is formed on the side of the pressing part 23 facing away from the crawler plate 5. The emptying surface is inclined downward in the direction from the lifting part 22 towards the corresponding idler wheel 6, so as to avoid interference between the pressing part 23 and the adjacent idler wheel 6, and increase the overall weight and structural strength of the pressing block 2.

[0049] In order to achieve the above object, the present utility model also provides a crawler crane, wherein the crawler crane includes a crawler chassis and the above anti-arching mechanism for the crawler device, referring to Figure 1, a plurality of track rollers 6 are sequentially and spacedly arranged on the lower track frame 4 of the crawler chassis, and an anti-arching mechanism for the track device is provided between any two adjacent track rollers 6. Specifically, the drive wheel 8 is installed on the track frame through a speed reducer to provide power for the traveling of the crawler crane. The drive wheel 8 rotates counterclockwise. The lower side of the track is the feeding side. The driving force overcomes the resistance of the ground on the track shoe 5 to drive the crawler crane to move forward. The driving force of the track shoe 5 and the resistance of the ground on the track shoe 5 are in opposite directions. When the connection position of the track shoe 5 is in the middle of two adjacent track rollers 6, the ground restricts the downward rotation of the track shoe 5 link, and the anti-arching device restricts the upward rotation of the track shoe 5 link, ensuring the flatness of the track shoe 5, improving the traveling smoothness of the crawler crane, and avoiding abnormal noise caused by the arching of the track shoe 5 hitting the track frame.

[0050] In the embodiment of the present invention, the lower track frame 4 includes a transverse plate portion 41 and two vertical plate portions 42. The transverse plate portion 41 extends along the transmission direction of the track shoe 5. The two vertical plate portions 42 are spaced relatively along the width direction of the transverse plate portion 41 and are arranged on the transverse plate portion 41. The limit seat 1 is located between the two vertical plate portions 42. While providing a setting position for the limit seat 1, the lower track frame 4 also plays a lateral limiting role on the pressing block 2, ensuring that the pressing block 2 can only move up and down along the lifting channel.

[0051] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0054] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An anti-arching mechanism for a crawler device, characterized in that, The anti-arching mechanism for the crawler device comprises: A limit seat (1) is arranged on a crawler frame of the crawler device and is formed with a lifting channel extending toward the crawler plate (5); The anti-arching assembly comprises a pressure block (2) and an elastic member (3), wherein the pressure block (2) is arranged in the lifting channel in a liftable manner, and the elastic member (3) is placed between the pressure block (2) and the track frame and is used to press the pressure block (2) onto the track shoe (5).

2. The anti-arching mechanism for the crawler device according to claim 1, characterized in that, The limit seat (1) is provided with a mounting slot (10), and the extension direction of the mounting slot (10) is set to be consistent with the extension direction of the lifting channel. The anti-arching component also includes a limit shaft (7), and the limit shaft (7) is passed through the mounting slot (10) and connected to the pressure block (2).

3. The anti-arching mechanism for a crawler device according to claim 2, characterized in that, The limiting seat (1) comprises a first limiting plate (11) and a second limiting plate (12), the first limiting plate (11) and the second limiting plate (12) being arranged at intervals along the transmission direction of the track shoe (5) to form the lifting channel, and the first limiting plate (11) and the second limiting plate (12) are both provided with the mounting notches (10).

4. The anti-arching mechanism for a crawler device according to claim 1, characterized in that, The pressure block (2) is used to extend a positioning rod (21) toward one side of the crawler frame. The positioning rod (21) is lifted and inserted into a process hole of the crawler frame, and the elastic member (3) is sleeved on the positioning rod (21).

5. The anti-arching mechanism for a crawler device according to claim 4, characterized in that, The number of the positioning rods (21) is at least two, and at least two positioning rods (21) are arranged on the pressure block (2) in sequence and spaced apart along the width direction of the track shoe (5), and each positioning rod (21) is sleeved with the elastic member (3).

6. The anti-arching mechanism for a crawler device according to claim 1, wherein, The pressure block (2) comprises a lifting part (22) and a pressing part (23). The lifting part (22) is arranged in the lifting channel in a liftable manner. One end of the lifting part (22) facing away from the track shoe (5) abuts against the elastic member (3). One end of the lifting part (22) facing the track shoe (5) and extending out of the lifting channel is connected with the pressing part (23). The number of the pressing parts (23) is two. The two pressing parts (23) are arranged on the lifting part (22) along the width direction of the track shoe (5) at intervals from the toothed part (51) of the track shoe (5), and are used to abut against the plate body of the track shoe (5) respectively.

7. The anti-arching mechanism for a crawler device according to claim 6, characterized in that, The pressing portion (23) is formed with a pressing surface that abuts against the track shoe (5), and the pressing surface is provided with a first transition surface (231) and a second transition surface (232) in sequence along the transmission direction of the track shoe (5), and the first transition surface (231) and the second transition surface (232) are both extended from a joint in a direction away from each other and away from the track shoe (5).

8. The anti-arching mechanism for the crawler device according to claim 6, characterized in that, The limit seat (1) is located between two adjacent supporting rollers (6), and a clearance surface (233) is formed on the side of the pressing portion (23) facing away from the track shoe (5), and the clearance surface is arranged to be inclined downward in the direction from the lifting portion (22) toward the corresponding supporting roller (6).

9. A crawler crane, characterized in that, The crawler crane includes a crawler chassis and an anti-arching mechanism for the crawler device according to any one of claims 1 to 8. A plurality of track rollers (6) are sequentially and spacedly arranged on the lower track frame (4) of the crawler chassis, and the anti-arching mechanism for the crawler device is provided between any two adjacent track rollers (6).

10. The crawler crane according to claim 9, characterized in that, The lower track frame (4) includes a transverse plate portion (41) and two vertical plate portions (42). The transverse plate portion (41) extends along the transmission direction of the crawler plate (5), and the two vertical plate portions (42) are relatively spaced along the width direction of the transverse plate portion (41) and are arranged on the transverse plate portion (41). The limit seat (1) is located between the two vertical plate portions (42).

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