A tractor parking lift

Abstract

The present invention discloses a tractor parking lift, which comprises a lifting track and a traveling track. The lifting track includes a pair of lifting guide rails spaced left and right. A car locking mechanism is arranged between the lifting guide rails. Each lifting guide rail is equipped with a vertically arranged guide rod and a pair of lifting mechanisms. The lifting mechanism includes a vertically arranged lead screw nut assembly, the lead screw nut assembly is equipped with a lifting motor, a lifting body is fixedly arranged on the nut of the lead screw nut assembly, and a support platform is arranged on the lifting body. Bolts are arranged on the front and rear traveling tracks, and the bolts are all equipped with docking hydraulic cylinders. Jack holes for inserting the bolts are arranged at both ends of the lifting guide rail. After the lifting track rises to be flush with the traveling track, a workpiece support assembly is arranged between the pair of lifting guide rails, and both ends of the workpiece support assembly are respectively fixed on the lifting bodies on both sides. It has various functions, can park the tractor, and can also adjust the installation height of the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit, and particularly relates to a tractor parking lift. Background Art

[0002] Rail is the main component of railway tracks, which is used to guide the wheels of locomotives and vehicles to move forward, bear the huge pressure of the wheels, and transmit it to the sleepers. During railway construction, due to the long length and heavy weight of the rails, tractors are required to tow the rails to the designated positions for installation.

[0003] After the tractor completes the rail transportation operation, it needs to be parked. Common parking methods all use locking devices or brakes for braking. Since the tractor itself is heavy, weighing about 19 tons, it must be parked stably and reliably. Otherwise, serious consequences will occur if the vehicle slips. In addition, when the rails are towed to the installation position, since the inclination of the rails will be adjusted according to the terrain, and the rails are long and heavy, equipment must be used to meet the adjustment requirements. Therefore, there is an urgent need for a device that can not only park the vehicle but also adjust the installation height of the rails. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art, and particularly innovatively proposes a tractor parking lift, which has diverse functions and can park the tractor while also adjusting the installation height of the workpiece.

[0005] To achieve the above object, the present invention provides a tractor parking lift, which includes a lifting track arranged above the workbench and traveling tracks on the front and rear sides of the lifting track. The horizontal heights of the traveling tracks on the front and rear sides are the same and are used to dock with the lifting track. The lifting track includes a pair of lifting guide rails spaced left and right, a locking mechanism is arranged between the lifting guide rails, and each lifting guide rail is equipped with a vertically arranged guide rod and a pair of lifting mechanisms;

[0006] The lifting mechanism includes a vertically arranged lead screw nut assembly, the lead screw nut assembly is equipped with a lifting motor, a lifting body is fixedly arranged on the nut of the lead screw nut assembly, and a support platform for placing the lifting guide rail is arranged on the lifting body; Pins for inserting into the lifting guide rails are arranged on the traveling tracks on the front and rear sides, and the pins are all equipped with docking hydraulic cylinders for extending or retracting the pins. Jacks for inserting the pins are arranged at both ends of the lifting guide rails. After the lifting track rises to be flush with the traveling track, the pins are inserted into the lifting guide rails through the docking hydraulic cylinders to achieve the docking of the traveling track and the lifting track;

[0007] A workpiece support assembly is arranged between a pair of the lifting guide rails. The workpiece support assembly is used to support the towed steel rail. Both ends of the workpiece support assembly are respectively fixed on the lifting bodies on both sides and the height is adjusted through the lifting mechanism.

[0008] In the above solution: The bottom end of the guide rod is fixed on the workbench. The top end of the guide rod is fixed together with the traveling track through a connecting rod. A connecting ear for connecting with the guide rod is horizontally arranged on one side of the lifting guide rail. A through hole for the guide rod to pass through is arranged on the connecting ear.

[0009] In the above solution: There are two workpiece support assemblies arranged at intervals front and back, which improves the support effect and the height adjustment effect.

[0010] In the above solution: The workpiece support assembly includes a transverse support frame. A row of horizontal rollers for reducing the moving friction of the workpiece are arranged on the top of the transverse support frame. A pair of limit rollers for restricting the position of the workpiece are vertically rotatably connected to the top of the workpiece support assembly. The pair of limit rollers are respectively located on the left and right sides of this row of horizontal rollers, and the tops of the limit rollers are located above the horizontal rollers. The left and right positions of the workpiece can be limited by the limit rollers to prevent the workpiece from falling out of the transverse support frame. At the same time, the horizontal rollers can reduce the workpiece friction and improve the traction efficiency.

[0011] In the above solution: The horizontal rollers are multiple and are arranged adjacent to each other left and right. The arrangement is reasonable and can be suitable for the moving speeds of different workpieces.

[0012] In the above solution: The car locking mechanism includes a car locking support platform located directly below the lifting guide rail 21 and a locking pin for inserting into the bottom of the tractor. The locking pin is fixed on the side of the car locking support platform close to the tractor. The locking pin is equipped with a car locking hydraulic cylinder for extending or retracting the locking pin. When the locking pin extends, the top end of the locking pin is higher than the car locking support platform. The locking pin is inserted into the lock hole of the tractor through the car locking hydraulic cylinder to realize the locking of the lifting track.

[0013] In the above solution: Each of the lifting guide rails is equipped with at least two car locking mechanisms, which improves the car locking effect and ensures the parking stability.

[0014] In the above solution: A backing plate for padding under the lifting guide rail is arranged on the support platform.

[0015] In the above solution: Horizontally arranged mounting ears for installing the ends of the workpiece support assembly are oppositely arranged on the relatively close sides of the lifting bodies on the left and right sides, which is convenient for installation.

[0016] In the above solution: A guide hole for the guide rod to pass through is also vertically arranged on the lifting body.

[0017] In summary, the beneficial effects of the present invention are as follows: When parking is required, the provided lifting mechanism and lifting track can drive the tractor to move downward, and the lifting track is disconnected from the walking track, so that the tractor is disengaged from the original walking track. Combined with the vehicle locking mechanism, the situation of vehicle slipping will not occur. Even if vehicle slipping occurs, it will only abut against the support column of the walking track, and there will be no situation where the vehicle slides along the walking track due to vehicle slipping and collides with other vehicles, and stable and reliable parking can be achieved. The provided bolt and docking hydraulic cylinder can be used for the docking of the lifting track and the walking track to form a single track. The lifting mechanism can not only support the up and down movement of the lifting track, but also drive the workpiece support assembly to move up and down independently after the docking of the lifting track is completed, so as to adjust the height of the workpiece. It has multiple functions and can not only park the tractor, but also adjust the installation height of the workpiece, improving the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of the present invention.

[0019] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0020] Figure 3 is a cross-sectional view of the lifting mechanism.

[0021] Figure 4 is a cross-sectional view of the lifting body.

[0022] Figure 5 is a schematic view of the workpiece support assembly.

[0023] Figure 6 is a schematic view of the vehicle locking mechanism.

[0024] Figure 7 is a schematic view of the walking track and the bolt.

[0025] Figure 8 is a top view of the bolt and the docking hydraulic cylinder.

[0026] Figure 9 is a perspective view of the walking track and the bolt.

[0027] Figure 10 is a top view of the lifting guide rail.

[0028] Figure 11 is a perspective view of the present invention when parking.

[0029] Figure 12 is a front view of the present invention when parking.

[0030] Figure 13 is a front view of the present invention when driving. DETAILED DESCRIPTION OF THE INVENTION

[0031] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0032] like Figures 1 to 13 As shown, a tractor parking lift includes a lifting track 2 arranged above a workbench and a running track 1 located at the front and rear sides of the lifting track 2. The running tracks 1 at the front and rear sides have the same horizontal height and are used to dock with the lifting track 2. The lifting track 2 includes a pair of lifting guide rails 21 spaced apart from each other. Correspondingly, the running tracks 1 at the front and rear sides are also provided with two rails. At least two locking mechanisms 5 are arranged directly below the two lifting guide rails 21 to improve the locking effect and ensure parking stability. Each lifting guide rail 21 is equipped with a vertically arranged guide rod 42 and a pair of lifting mechanisms 4.

[0033] The lifting mechanism 4 includes a vertically arranged lead screw nut assembly, which is equipped with a lifting motor 41. A lifting body 44 is fixedly arranged on the nut 43 of the lead screw nut assembly, and a mounting sleeve 48 for sleeved outside the nut 43 is arranged on the lifting body 44. A ring-shaped mounting edge extends horizontally outward from the bottom of the nut 43, and is installed by bolts passing through the mounting edge and the mounting sleeve 48 at the same time. A support platform for placing the lifting guide rail 21 is arranged on the lifting body 44, and a pad 47 for padding under the lifting guide rail 21 is arranged on the support platform.

[0034] The bottom end of the guide rod 42 is fixed on the workbench, and the top end of the guide rod 42 is fixed to the fixed column of the walking track 1 through a connecting rod. A connecting lug 22 for connecting with the guide rod 42 is horizontally arranged on one side of the lifting guide rail 21, and a through hole 23 for the guide rod 42 to pass through is arranged on the connecting lug 22, and a guide hole 45 for the guide rod 42 to pass through is also vertically arranged on the lifting body 44.

[0035] The ends of the rails of the running rails 1 on the front and rear sides close to the lifting rails 21 are provided with latches 11 for inserting into the ends of the lifting rails 21 to be docked therewith, and both ends of the lifting rails 21 are provided with jacks for the latches 11 to be inserted. The latches 11 extend forward and backward, and are equipped with docking hydraulic cylinders 12 for extending or retracting the latches 11, and the bottom side of the rails of the running rails 1 is provided with accommodating grooves corresponding to the docking hydraulic cylinders 12 and the latches 11, so that the docking hydraulic cylinders 12 and the latches 11 are embedded and installed on the running rails 1, and the ends of the rails are provided with clearance holes for the latches 11 to extend. In the specific implementation, the docking hydraulic cylinders 12 and the latches 11 can be installed on the fixed columns of the running rails 1, and then the rails of the running rails 1 are covered on the docking hydraulic cylinders 12 and the latches 11, and then the rails are fixed on the fixed columns. Figure 7The dashed line in the figure is a schematic diagram when the bolt 11 is retracted. After the lifting track 2 rises to be flush with the traveling track 1, the bolt 11 is extended from the accommodating groove and inserted into the lifting guide rail 21 through the docking hydraulic cylinder 12 to realize the docking of the traveling track 1 and the lifting track 2.

[0036] A workpiece support assembly 3 for supporting the towed workpiece is arranged at intervals before and after between a pair of lifting guide rails 21. The workpiece support assembly 3 includes a horizontally extending transverse support frame 31. The two ends of the transverse support frame 31 are respectively fixed on the lifting bodies 44 on both sides and its height is adjusted by a lifting mechanism 4. Correspondingly, horizontally installed support lugs 46 for installing the ends of the workpiece support assembly 3 are oppositely arranged on the relatively close sides of the left and right lifting bodies 44. After overlapping the end of the transverse support frame 31 and the horizontally installed support lug 46 up and down, they are installed by bolts passing through the end of the transverse support frame 31 and the horizontally installed support lug 46 at the same time, which is convenient for installing the workpiece support assembly 3. Among them, since the height requirement of the workpiece of the present invention is relatively low, the end of the transverse support frame 31 is located at the bottom side of the horizontally installed support lug 46, and a cushion block is also arranged between the end of the transverse support frame 31 and the horizontally installed support lug 46. The bolts pass through the end of the transverse support frame 31, the cushion block and the horizontally installed support lug 46 for installation at the same time, so as to reduce the installation height of the transverse support frame 31 as much as possible. After the two ends of the transverse support frame 31 are fixed to the horizontally installed support lugs 46, the transverse support frame 31 is fixed on the left and right lifting bodies 44. During the process of the lead screw nut assembly driving the lifting body 44 to move up and down, the height of the transverse support frame 31 can also be adjusted.

[0037] A horizontal roller 32 for reducing the moving friction of the workpiece is rotatably connected to the middle of the top of the transverse support frame 31. Among them, the horizontal roller 32 extends horizontally and is a plurality of horizontally adjacent ones. The setting is reasonable and can be suitable for the moving speeds of different workpieces. A pair of limit rollers 33 for limiting the position of the workpiece are vertically arranged on the top of the transverse support frame 31. The limit rollers 33 are installed on the transverse support frame 31 through vertical rotating shafts. The pair of limit rollers 33 are respectively located on the left side of the leftmost horizontal roller 32 and on the right side of the rightmost horizontal roller 32, and the top of the limit roller 33 is higher than that of the horizontal roller 32, so that the workpiece can only move within the area surrounded by the limit roller 33 and the horizontal roller 32, which can limit the position of the workpiece left and right, reduce the friction of the workpiece at the same time, and improve the towing efficiency.

[0038] The vehicle locking mechanism 5 includes a vehicle locking support platform 51 disposed directly below the lifting rail 21 and a locking pin 52 for inserting into the bottom of the tractor. The vehicle locking support platform 51 is fixed on the ground, and the locking pin 52 is fixed on the side of the vehicle locking support platform 51 close to the tractor and is located between the two lifting rails 21, that is, staggered from the lifting rails 21. The tip of the locking pin 52 faces upward, and the locking pin 52 is equipped with a vehicle locking hydraulic cylinder. When the locking pin 52 is extended, the top height of the locking pin 52 is higher than the vehicle locking support platform 51. The bottom of the tractor is provided with a locking hole for the locking pin 52 to be inserted. The locking pin 52 is extended and inserted into the locking hole of the tractor by the locking hydraulic cylinder to achieve locking of the tractor.

[0039] When parking is required, the tractor is moved onto the lifting guide rail 21, and the lifting mechanism 4 moves the lifting body 44 to abut against the bottom of the lifting guide rail 21 and support the lifting guide rail 21 through the screw nut assembly. The latch 11 is retracted by the docking hydraulic cylinder 12, thereby disconnecting the lifting guide rail 21 from the walking track 1. The lifting body 44 is then driven downward by the lifting motor 41, that is, the lifting guide rail 21 also moves downward, until the bottom of the lifting rail 2 moves to abut against the vehicle locking support platform 51, thereby placing the lifting guide rail 21 and the tractor on the vehicle locking support platform 51, and the lifting rail 2 and the tractor are supported by the vehicle locking support platform 51. At this time, the lifting motor 41 can be stopped without driving the lifting body 44 to continue to move downward. The locking pin 52 is extended and inserted into the locking hole of the tractor by the vehicle locking hydraulic cylinder to lock the tractor, completing parking and preventing the tractor from sliding along the lifting guide rail 21. Figure 12 As shown, Figure 12 In order to show the position of the latch 11, the latch 11 is extended. In actual use, the latch 11 is retracted when parking.

[0040] When parking, in order to ensure that the locking pin 52 is stably inserted into the locking hole at the bottom of the tractor, a parking alignment mark can be used to ensure that the tractor is parked in place so that the locking hole is located directly above the locking pin 52.

[0041] Similarly, when towing is required, the locking pin 52 is pulled out of the locking hole of the tractor by the locking hydraulic cylinder to release the lock. Then the lifting motor 41 drives the lifting body 44 to move upward, and the lifting body 44 lifts it from the bottom of the lifting guide rail 21, leaves the locking support platform 51, and moves upward. At this time, the locking pin 52 can be retracted by the locking hydraulic cylinder, or it can be left unretracted, because the locking pin 52 is set vertically, and not retracting it will not affect the next parking operation.

[0042] After the lifting guide rail 21 rises to be flush with the running track 1, the lifting motor 41 is stopped. The latch 11 is inserted into the lifting guide rail 21 through the docking hydraulic cylinder 12 to achieve docking of the running track 1 and the lifting track 2, and the tractor can move from the lifting guide rail 21 to the running track 1, thereby towing the workpiece to the designated location.

[0043] After the workpiece is pulled out, it is necessary to adjust the height of the workpiece through the workpiece support assembly 3. That is, at this time, the tractor has moved onto the walking track 1. Since the lifting guide rail 21 is placed on the lifting mechanism 4, and both ends of the lifting guide rail 21 are docked with the walking track 1 through the pins 11, the lifting guide rail 21 can be supported and fixed by the pins 11. The height of the lifting body 44 is adjusted through the screw-nut assembly, so as to separately adjust the height of the workpiece support assembly 3 to meet the installation height of the workpiece.

Claims

1. A tractor parking lift, characterized in that: It includes a lifting track (2) arranged above the workbench and traveling tracks (1) located on the front and rear sides of the lifting track (2). The horizontal heights of the traveling tracks (1) on the front and rear sides are the same and are used to dock with the lifting track (2). The lifting track (2) includes a pair of lifting guide rails (21) spaced left and right. A car locking mechanism (5) is arranged between the lifting guide rails (21). Each lifting guide rail (21) is equipped with a vertically arranged guide rod (42) and a pair of lifting mechanisms (4); The lifting mechanism (4) includes a vertically arranged lead screw nut assembly. The lead screw nut assembly is equipped with a lifting motor (41). A lifting body (44) is fixedly arranged on the nut of the lead screw nut assembly. A support platform for placing the lifting guide rail (21) is arranged on the lifting body (44). Pins (11) for inserting into the lifting guide rail (21) are arranged on the traveling tracks (1) on the front and rear sides. The pins (11) are all equipped with docking hydraulic cylinders (12) for extending or retracting the pins (11). Sockets for the pins (11) to insert are arranged at both ends of the lifting guide rail (21). After the lifting track (2) rises to be flush with the traveling track (1), the pins (11) are inserted into the lifting guide rail (21) through the docking hydraulic cylinders (12) to realize the docking of the traveling track (1) and the lifting track (2); A workpiece support assembly (3) is arranged between the pair of lifting guide rails (21). The workpiece support assembly (3) is used to support the towed steel rail. The two ends of the workpiece support assembly (3) are respectively fixed on the lifting bodies (44) on both sides and the height is adjusted by the lifting mechanism (4).

2. The tractor parking lift according to claim 1, characterized in that: The bottom end of the guide rod (42) is fixed on the workbench. The top end of the guide rod (42) is fixed together with the traveling track (1) through a connecting rod. A connecting lug (22) for connecting with the guide rod (42) is horizontally arranged on one side of the lifting guide rail (21). A through hole (23) for the guide rod (42) to pass through is arranged on the connecting lug (22).

3. A tractor parking lift according to claim 1, characterized in that: There are two workpiece support assemblies (3) arranged at intervals front and back.

4. A tractor parking lift according to claim 3, characterized in that: The workpiece support assembly (3) includes a transverse support frame (31). A row of horizontal rollers (32) for reducing the moving friction of the workpiece are arranged at the top of the transverse support frame (31). A pair of limit rollers (33) for restricting the position of the workpiece are vertically rotatably connected to the top of the workpiece support assembly (3). The pair of limit rollers (33) are respectively located on the left and right sides of the row of horizontal rollers (32), and the tops of the limit rollers (33) are located above the horizontal rollers (32).

5. A tractor parking lift according to claim 4, characterized in that: The horizontal rollers (32) are multiple and arranged adjacent to each other left and right.

6. A tractor parking lift according to claim 1, characterized in that: The vehicle locking mechanism (5) includes a vehicle locking support platform (51) located directly below the lifting guide rail (21) and a locking pin (52) for inserting into the bottom of the tractor. The locking pin (52) is fixed to the side of the vehicle locking support platform (51) close to the tractor. The locking pin (52) is equipped with a vehicle locking hydraulic cylinder for extending or retracting the locking pin (52). When the locking pin (52) extends, the top of the locking pin (52) is higher than the vehicle locking support platform (51). The locking pin (52) is inserted into the locking hole of the tractor through the vehicle locking hydraulic cylinder to lock the lifting track (2).

7. A trailer parking lift according to claim 6, characterized in that: Each of the lifting guide rails (21) is equipped with at least two vehicle locking mechanisms (5).

8. A tractor parking lift according to claim 1, characterized in that: A backing plate (47) for padding under the lifting guide rail (21) is provided on the support platform.

9. The trailer parking lift according to claim 8, wherein: Horizontal mounting lugs (46) for mounting the ends of the workpiece support assembly (3) are oppositely arranged on the relatively close sides of the lifting bodies (44) on the left and right sides.

10. A tractor parking lift according to claim 8, characterized in that: A guide hole (45) through which the guide rod (42) passes is also vertically provided on the lifting body (44).

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