Electric push rod device for monorail traffic turnout

Abstract

The utility model discloses a monorail traffic turnout electric push rod device, monorail traffic comprises a foundation base (2) and a rail turnout beam body (5), and one end of an electric push rod (1) is installed on the foundation base (2); the other end is connected with the track fork beam body (5) through the sliding bearing assembly (4); the electric push rod (1) is placed on the boss base (7) through the supporting assembly (3), and the supporting bottom plate assembly (6) fixedly connected with the boss base (7) is arranged on the horizontal upper surface of the boss base (7). The supporting assembly (3) can horizontally slide on the supporting bottom plate assembly (6) relative to the boss base (7). By adopting the technical scheme, the levelness installation difficulty of the electric push rod is effectively reduced, the influence of the aging factor in the operation period on the levelness is eliminated, the usability and reliability of a turnout system are improved, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of rail transit engineering, relates to its turnout technology. More specifically, the utility model relates to a monorail traffic turnout electric push rod device. BACKGROUND

[0002] As a key device of the monorail system, the electric push rod is the power source of the turnout system, and there is no backup, which is a key factor to ensure the safe, reliable and efficient operation of the monorail train.

[0003] The installation levelness of the electric push rod will produce an additional bending moment, which will reduce the service life of the electric push rod assembly or cause damage, and even cause the drive push rod to fail. The installation quality of the turnout drive push rod during the construction period and the time efficiency during the operation period will all lead to the installation levelness of the electric push rod being out of tolerance.

[0004] Using the keywords "monorail, track, turnout, push rod", etc., the existing public technical documents are searched, and the following search results are obtained:

[0005] 1. Chinese patent document: "Suspension type monorail turnout power push rod control system, method and storage medium", patent (application) number: 202310225302.8; the technical solution recorded is:

[0006] "In the suspension type monorail turnout power push rod control system, the first displacement detection device and the second displacement detection device are arranged on the power push rod, the first displacement detection device and the second displacement detection device are respectively used to detect the push rod movement position of the power push rod, the first displacement detection device, the second displacement detection device and the data conversion transmitter are electrically connected, the data conversion transmitter is used to receive the detection signal sent by the first displacement detection device and the second displacement detection device, and according to the preset condition, the detection signal is converted and sent to the controller, the controller is electrically connected with the power push rod and the data conversion transmitter";

[0007] The technical effect recorded is:

[0008] "First displacement detection device and second displacement detection device are arranged on the suspension type monorail turnout power push rod, which are redundant to each other, and can automatically switch the control mode, thereby improving the safety of the turnout".

[0009] 2. Chinese patent document: "A monorail turnout professional electric push rod", patent (application) number: 202021829321.X; the technical solution recorded is:

[0010] The driving assembly is started to drive the transmission assembly to rotate, the transmission assembly guard cover is provided with the driving assembly on one side, and the L-shaped fixing seat is arranged on the top of the transmission assembly guard cover; the planetary roller screw is driven to move by the transmission assembly, and the telescopic pipe is driven to move by the planetary roller screw; the vibration generated during the operation of the driving assembly is contacted with the buffer assembly, the energy consumption generated by the buffer assembly is used to reduce the vibration, the stability is improved, the dust cover is driven to move by the movement of the telescopic pipe, and the dustproof function is realized.

[0011] The technical effect recorded is:

[0012] The stable telescopic movement is realized, the impact resistance is stronger, the vibration is reduced, the stability is improved, and the dustproof function is realized.

[0013] However, the technical solutions recorded in the above technical documents and the existing related technical solutions cannot solve the problem of "horizontal error of electric push rod installation and operation" in the prior art. Practical new type content

[0014] The utility model provides a single track traffic turnout electric push rod device, and the purpose is to reduce the influence of horizontal error of electric push rod installation and operation.

[0015] In order to realize the above purpose, the technical scheme adopted by the utility model is:

[0016] The single track traffic turnout electric push rod device of the utility model, the single track traffic includes a base pedestal and a track turnout beam body, one end of the electric push rod is installed on the base pedestal, and the other end is connected with the track turnout beam body through a sliding bearing assembly; the electric push rod is placed on the boss base through a supporting assembly, a supporting bottom plate assembly fixedly connected with the boss base is arranged on the horizontal upper surface of the boss base; the supporting assembly can slide horizontally relative to the boss base on the supporting bottom plate assembly.

[0017] The electric push rod is provided with a push rod outer pipe; the supporting assembly is provided with a push rod outer pipe clamp and a supporting plate, the push rod outer pipe clamp and the supporting plate clamp the push rod outer pipe; the supporting plate and the supporting slide plate are connected as a whole; the supporting slide plate and the supporting bottom plate of the supporting bottom plate assembly are in plane contact and can slide relative to each other.

[0018] The supporting slide plate and the supporting bottom plate are both made of high-strength wear-resistant self-lubricating material.

[0019] An oil injection nozzle is arranged on the supporting slide plate, and the oil injection nozzle is used for injecting lubricating oil between the contact surface of the supporting slide plate and the supporting bottom plate assembly.

[0020] The electric push rod is provided with a motor at one end of a base pedestal; a screw rod shaft coaxial with the push rod outer tube is arranged in the inner cavity of the push rod outer tube, the end of the screw rod shaft is connected with the main shaft of the motor through a speed reducer, a screw rod nut is further arranged in the inner cavity of the push rod outer tube, the outer circle of the screw rod nut is in sliding fit with the inner hole of the push rod outer tube, the inner threaded hole of the screw rod nut is in threaded fit with the outer thread of the screw rod shaft, the screw rod nut is fixedly connected with a power tube, the power tube is sleeved on the screw rod shaft and is in clearance fit, and the power tube extends out of the push rod outer tube at one end of the track turnout beam body and is connected with the track turnout beam body through a sliding bearing assembly.

[0021] An exhaust valve is arranged at the positions close to the two ends of the push rod outer tube.

[0022] A plurality of two-cavity air holes of the push rod outer tube are arranged at the joint of the screw rod nut and the power tube, and the two-cavity air holes of the push rod outer tube connect the two inner cavities of the push rod outer tube.

[0023] The structure of the sliding bearing assembly is that: a joint bearing is arranged at the end of the power tube; a connecting shaft support seat is arranged on the track turnout beam body, and the connecting shaft support seat fixedly supports the two ends of a joint connecting shaft arranged in the vertical direction; a self-lubricating bearing is arranged at the middle position of the joint connecting shaft; a transition shaft sleeve is arranged in the inner hole of the joint bearing, and the self-lubricating bearing is in sliding fit with the transition shaft sleeve.

[0024] Two locking nuts are arranged on the joint connecting shaft, the locking nuts are in threaded fit with the joint connecting shaft, the locking nuts lock the joint bearing, and the positioning of the joint bearing in the axial direction of the joint connecting shaft is realized.

[0025] Two coaxial rotating shafts are arranged at the end of the push rod outer tube at one end of the base pedestal; a rotating shaft mounting seat fixedly connected with the base pedestal is arranged on the base pedestal; and the rotating shaft is mounted on the rotating shaft mounting seat through an oil-free lubricating bearing.

[0026] The above technical scheme is adopted in the utility model, the difficulty of installing the electric push rod is effectively reduced, the influence of the time factor during the operation period on the levelness is eliminated, the availability and reliability of the turnout system are improved, and the maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] The contents shown in the drawings and the marks in the drawings are briefly described as follows:

[0028] Figure 1 It is a three-dimensional schematic view of the structure of the utility model;

[0029] Figure 2It is the overhead view schematic diagram (not including the track turnout beam body part) of the utility model structure;

[0030] Figure 3 It is Figure 2 The structure schematic diagram (sectional view) of the two cavity vent holes of the screw rod nut and the push rod outer tube in the utility model;

[0031] Figure 4 It is the structure schematic diagram of the rotating shaft, the rotating shaft mounting seat and the oil-free lubrication bearing in the utility model;

[0032] Figure 5 It is the structure schematic diagram of the supporting bottom plate assembly and the push rod outer tube in the utility model;

[0033] Figure 6 It is the structure schematic diagram of the power pipe and the track turnout beam body connecting part.

[0034] Marked as in the figure:

[0035] 1, electric push rod, 2, base pedestal, 3, support assembly, 4, sliding bearing assembly, 5, track turnout beam body, 6, supporting bottom plate assembly, 7, boss base, 8, push rod outer tube two cavity vent holes;

[0036] 11, motor, 12, speed reducer box, 13, screw rod nut, 14, screw rod shaft, 15, push rod outer tube, 16, power pipe, 17, exhaust valve, 18, rotating shaft, 19, oil-free lubrication bearing, 20, rotating shaft mounting seat;

[0037] 31, push rod outer tube hoop, 32, support plate, 33, oil injection nozzle;

[0038] 41, joint bearing, 42, baffle, 43, joint connecting shaft, 44, self-lubricating bearing, 45, transition shaft sleeve, 46, locking nut, 47, connecting shaft support seat;

[0039] 61, supporting slide plate, 62, supporting bottom plate. DETAILED DESCRIPTION

[0040] The specific embodiments of the utility model are further explained in detail by the description of the embodiments with reference to the drawings, to help the skilled in the art to have more complete, accurate and in-depth understanding of the inventive concept and technical scheme of the utility model.

[0041] As Figures 1 to 6 The structure of the utility model is shown in the figure, which is a single-track traffic turnout electric push rod device, which is composed of an electric push rod 1, a support assembly 3, a sliding bearing assembly 4, a supporting bottom plate assembly 6 and the like.

[0042] The monorail traffic includes a base pedestal 2 and a track turnout beam body 5, one end of the electric push rod 1 is installed on the base pedestal 2, and the other end is connected with the track turnout beam body 5 through a sliding bearing assembly 4.

[0043] The specific analysis is as follows:

[0044] In order to solve the problems existing in the prior art and overcome its defects, and realize the purpose of reducing the influence of horizontal error in the installation and operation process of the electric push rod, the technical scheme adopted by the utility model is:

[0045] As shown in Figure 1 The electric push rod 1 is placed on the boss pedestal 7 through the support assembly 3, a support bottom plate assembly 6 is arranged on the horizontal upper surface of the boss pedestal 7 and fixedly connected with the boss pedestal 7, and the support assembly 3 can slide horizontally relative to the boss pedestal 7.

[0046] The base pedestal 2 and the boss pedestal 7 provide two mounting fulcrums for the electric push rod device, the relative height of the two fulcrums is adjusted, and therefore the installation levelness of the electric push rod 1 can meet the design requirements.

[0047] The support assembly 3 supports the electric push rod 1, and the rotation of the electric push rod 1 in the horizontal direction can be prevented from being stuck by the relative sliding of the electric push rod 1. The above technical scheme can effectively reduce the installation difficulty of the levelness of the electric push rod, eliminate the influence of the time factor on the levelness during the operation period, improve the usability of the turnout system, and reduce the maintenance cost.

[0048] As shown in Figure 1 、 Figure 5 In order to make the support of the push rod outer tube 15 more reliable and stable, the following technical scheme is adopted:

[0049] The electric push rod 1 is provided with a push rod outer tube 15, the support assembly 3 is provided with a push rod outer tube hoop 31 and a support plate 32, the push rod outer tube hoop 31 and the support plate 32 clamp the push rod outer tube 15, the support plate 32 is connected with a support sliding plate 61 to form an integral whole, and the support sliding plate 61 is in plane contact with the support bottom plate assembly 6 and can slide relative to the support bottom plate assembly 6.

[0050] The support assembly 3 is fixedly connected with the electric push rod outer tube 15 through the push rod outer tube hoop 31, and the lower surface of the support plate 32 is in plane contact with the support sliding plate 61 in the support bottom plate assembly 6.

[0051] The electric push rod device is installed on the base pedestal 2 through a bolt assembly at one end, and connected with the single rail turnout beam body 5 through a sliding bearing assembly 4 at the other end. A support assembly 3 is arranged below the middle part of the push rod. The support assembly 3 is in surface contact with the support base plate assembly 6 installed on the boss base 7.

[0052] The support sliding plate 61 and the support base plate 62 in the support base plate assembly 6 are made of high-strength wear-resistant self-lubricating material, and are firmly connected with the support base plate 62 through fasteners and installed on the base boss 7.

[0053] As shown in the figure: Figure 5

[0054] An oil injection nozzle 33 is arranged on the support sliding plate 61, which is used to inject lubricating oil between the contact surface of the support sliding plate 61 and the support base plate assembly 6.

[0055] During routine maintenance, lubricating oil can be injected through the oil injection nozzle 33 to lubricate the moving friction pair of the support assembly 3 and the support base plate assembly 6.

[0056] As shown in the figure: Figure 2

[0057] The electric push rod 1 is provided with a motor 11 at one end of the base pedestal 2. A screw rod shaft 14 coaxial with the push rod outer tube 15 is arranged in the inner cavity of the push rod outer tube 15. The end of the screw rod shaft 14 is connected with the main shaft of the motor 11 through a reduction box 12. A screw rod nut 13 is also arranged in the inner cavity of the push rod outer tube 15. The outer circle of the screw rod nut 13 is in sliding fit with the inner hole of the push rod outer tube 15. The inner threaded hole of the screw rod nut 13 is in threaded fit with the outer thread of the screw rod shaft 14. The screw rod nut 13 is fixedly connected with a power tube 16, which is in clearance fit with the screw rod shaft 14. The power tube 16 extends out of the push rod outer tube 15 from one end of the push rod outer tube 15 located at the rail turnout beam body 5, and is connected with the rail turnout beam body 5 through a sliding bearing assembly 4.

[0058] The electric push rod 1 converts electric energy into rotational kinetic energy through the motor 11, and drives the screw rod shaft 14 to rotate through the reduction box 12. The rotational movement of the screw rod shaft 14 is converted into linear movement of the power tube 16 connected with the screw rod nut 13 through the ball screw pair composed of the screw rod shaft 14 and the screw rod nut 13. By changing the forward and reverse rotation of the motor 11, the power tube 16 can be extended and retracted, thereby driving the single rail turnout beam body 5 to move.

[0059] As shown in the figure: Figure 2

[0060] An exhaust valve 17 is arranged near the two ends of the push rod outer tube 15. ​​​

[0061] The inner cavity of the push rod outer tube 15 of the electric push rod is divided into two cavities by the screw nut 13; during the extension / retraction of the screw nut 13, the air in the rear cavity is pulled / pressed, and the air in the front cavity is pressed / pulled; the pressure of the air in the front and rear cavities is different from the pressure of the screw nut 13, the power tube 16 rebounds, and the positioning accuracy of the electric push rod 1 is affected; therefore, the exhaust valves 17 are arranged at both ends of the push rod outer tube 15 to ensure that the air pressure in the front and rear cavities is consistent during the operation of the electric push rod 1, thereby avoiding the rebound phenomenon and ensuring the positioning accuracy.

[0062] As shown in Figure 3

[0063] A plurality of push rod outer tube two-cavity air holes 8 are arranged at the joint between the screw nut 13 and the power tube 16; the push rod outer tube two-cavity air holes 8 are connected to the two inner cavities of the push rod outer tube 15; during the operation of the electric push rod 1, the lubricating grease in the front and rear cavities can flow freely, and the positioning accuracy of the electric push rod 1 is not affected by the pressure difference caused by pulling / pressing.

[0064] As shown in Figure 6

[0065] The structure of the sliding bearing assembly 4 is as follows: the end of the power tube 16 is provided with a joint bearing 41; the track turnout beam body 5 is provided with a connecting shaft support seat 47, which fixedly supports the two ends of the joint connecting shaft 43 arranged in the vertical direction; a self-lubricating bearing 44 is arranged at the middle position of the joint connecting shaft 43; a transition shaft sleeve 45 is arranged in the inner hole of the joint bearing 41, and the self-lubricating bearing 44 and the transition shaft sleeve 45 form a sliding fit.

[0066] The joint bearing 41 in the sliding bearing assembly 4 is reliably connected with the power tube 16 in the electric push rod 1, and the inner ring is in transition fit with the transition shaft sleeve 45; the outer ring of the self-lubricating bearing 44 is in clearance fit with the inner ring of the transition shaft sleeve 45.

[0067] Two locking nuts 46 are arranged on the joint connecting shaft 43, and the locking nuts 46 are in threaded fit with the joint connecting shaft 43; the locking nuts 46 lock the joint bearing 41, and realize the positioning of the joint bearing 41 in the axial direction of the joint connecting shaft 43.

[0068] A baffle 42 is arranged above and below; the baffle 42, the self-lubricating bearing 44, the transition shaft sleeve 45, and the joint bearing 41 form an integral whole through the locking nuts 46; the joint connecting shaft 43 and the track turnout beam body 5 are reliably connected through fasteners; the inner ring of the self-lubricating bearing 44 is in clearance fit with the joint connecting shaft 43.

[0069] ​​The baffle 42 can limit the joint bearing, can effectively prevent the follow rotation of the power pipe 16 under the friction force between the ball screw pairs, and further improve the positioning accuracy of the electric push rod 1.

[0070] The joint bearing 41 in the sliding bearing assembly 4 can automatically adjust the swing of the turnout girder body 5 in the switching process or when the train passes through the turnout girder body; in addition, since the self-lubricating bearing 44 and the joint connecting shaft 43 are gap-fitted and can slide freely in the vertical direction, the height change caused by the environmental aging factors in the operation process of the turnout girder can be automatically corrected, the influence of the aging factors in the operation period on the levelness can be effectively eliminated, additional loads on the electric push rod 1 except the axial direction are avoided, and the availability of the turnout system is improved.

[0071] As shown in Figure 4

[0072] The two coaxial rotating shafts 18 are arranged at the end of the push rod outer pipe 15 at one end of the base seat 2; the rotating shaft mounting seat 20 is arranged on the base seat 2 and fixedly connected with the base seat 2; and the rotating shaft 18 is mounted on the rotating shaft mounting seat 20 through the oil-free lubricating bearing 19.

[0073] The rotating shaft 18 of the electric push rod is gap-fitted with the oil-free lubricating bearing 19, and the oil-free lubricating bearing 19 is transition-fitted with the rotating shaft mounting seat 20, so as to form a hinge shaft connecting pair, and the electric push rod 1 can rotate and swing around the center line of the rotating shaft 18.

[0074] The electric push rod 1 is extended or retracted, so as to push the monorail turnout girder to rotate around the rotating shaft; at the same time, the electric push rod 1 rotates around the rotating shaft 18 along with the rotation of the monorail turnout girder body, and the support assembly 3 mounted on the electric push rod outer pipe 15 rotates together, and the support assembly 3 and the slide plate of the support base plate assembly 6 are in surface contact, so that the relative sliding can be stable and smooth; at the same time, the electric push rod 1 and the turnout girder body 5 can rotate relative to the sliding bearing assembly 4 and the turnout girder body 5, and the reliability of the turnout system is improved.

[0075] The utility model has been described exemplarily above in combination with the drawings, and obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various non-essential improvements are made by adopting the method concept and technical scheme of the utility model, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, all of which are within the protection scope of the utility model.​

Claims

1. A monorail turnout electric push rod device, the monorail comprising a base (2) and a track turnout beam (5), one end of the electric push rod (1) being mounted on the base (2); the other end being connected to the track turnout beam (5) via a sliding bearing assembly (4); characterized in that: The electric push rod (1) is placed on the boss base (7) through the support assembly (3), and a support base assembly (6) fixedly connected to the boss base (7) is provided on the horizontal upper surface of the boss base (7); the support assembly (3) can slide horizontally relative to the boss base (7) on the support base assembly (6).

2. The electric push rod device for a monorail turnout according to claim 1, characterized in that: The electric push rod (1) is provided with a push rod outer tube (15); the support assembly (3) is provided with a push rod outer tube clamp (31) and a support plate (32), and the push rod outer tube clamp (31) and the support plate (32) clamp the push rod outer tube (15); the support plate (32) and the support slide plate (61) are connected as a whole; the support slide plate (61) and the support base plate (62) in the support base plate assembly (6) are in planar contact and can slide relative to each other.

3. The electric push rod device for a monorail turnout according to claim 2, characterized in that: The supporting slide plate (61) and the supporting base plate (62) are both made of high-strength wear-resistant self-lubricating material.

4. The electric push rod device for a monorail turnout according to claim 2, characterized in that: An oiling nozzle (33) is provided on the supporting slide plate (61), and the oiling nozzle (33) is used to inject lubricating oil between the contact surface of the supporting slide plate (61) and the supporting base plate assembly (6).

5. The electric push rod device for a monorail turnout according to claim 2, characterized in that: The electric push rod (1) is located at one end of the base (2) and a motor (11) is set; a screw shaft (14) arranged coaxially with the push rod outer tube (15) is set in the inner cavity of the push rod outer tube (15), and the end of the screw shaft (14) is connected to the main shaft of the motor (11) through a reduction box (12); a screw nut (13) is also set in the inner cavity of the push rod outer tube (15), and the outer circle of the screw nut (13) forms a sliding fit with the inner hole of the push rod outer tube (15); the internal threaded hole of the screw nut (13) forms a threaded fit with the external thread of the screw shaft (14); the screw nut (13) is fixedly connected to the power tube (16), and the power tube (16) is sleeved on the screw shaft (14) and forms a clearance fit; the power tube (16) extends out of the push rod outer tube (15) from one end of the push rod outer tube (15) located on the track switch beam body (5), and is connected to the track switch beam body (5) through a sliding bearing assembly (4).

6. The electric push rod device for a monorail turnout according to claim 5, characterized in that: Exhaust valves (17) are provided near the two ends of the push rod outer tube (15).

7. The electric push rod device for a monorail turnout according to claim 5, characterized in that: A plurality of push rod outer tube two-cavity vent holes (8) are provided at the joint portion between the screw nut (13) and the power tube (16), and the push rod outer tube two-cavity vent holes (8) are connected to the two inner cavities of the push rod outer tube (15).

8. The electric push rod device for a monorail turnout according to claim 5, characterized in that: The structure of the sliding bearing assembly (4) is as follows: a joint bearing (41) is provided at the end of the power tube (16); a connecting shaft support seat (47) is provided on the track switch beam body (5), and the connecting shaft support seat (47) fixes and supports the two ends of the joint connecting shaft (43) arranged in the vertical direction; a self-lubricating bearing (44) is provided at the middle position of the joint connecting shaft (43); a transition sleeve (45) is provided in the inner hole of the joint bearing (41), and the self-lubricating bearing (44) and the transition sleeve (45) form a sliding fit.

9. The electric push rod device for a monorail turnout according to claim 8, characterized in that: Two locking nuts (46) are provided on the joint connecting shaft (43), and the locking nuts (46) and the joint connecting shaft (43) are threadedly matched; the locking nuts (46) lock the joint bearing (41) to achieve axial positioning of the joint bearing (41) on the joint connecting shaft (43).

10. The electric push rod device for a monorail turnout according to claim 2, characterized in that: Two coaxial rotating shafts (18) are provided at the end of the push rod outer tube (15) located at one end of the basic base (2); a rotating shaft mounting seat (20) fixedly connected to the basic base (2) is provided; and the rotating shaft (18) is mounted on the rotating shaft mounting seat (20) via an oil-free lubricating bearing (19).

Images