A chain-type height-adjusting rail system

Abstract

The invention discloses a chain-type height-adjusting rail derailleur system, comprising a rail derailleur mechanism, a lifting and mounting platform, a chain transmission mechanism, a column and a chain connecting mechanism, wherein the chain transmission mechanism is connected to the chain connecting mechanism, and the chain transmission mechanism comprises four sprocket seats symmetrically mounted on the lifting and mounting platform, sprockets mounted on the sprocket seats, four chains passing around the sprockets in twos, a moving trolley for synchronously pulling the chains, a hydraulic drive component providing driving force for the moving trolley and a guide rail for left and right horizontal movement of the moving trolley, and the chain connecting mechanism presents a front-to-back mirror-symmetrical structure, and the chain connecting mechanism comprises a chain fixing seat fixedly connected to the chain, a limiting pulley component located outside the chain fixing seat and a vertical guide bracket for upper and lower limiting activities of the limiting pulley component. The invention has the advantages of reducing manufacturing precision, reducing manufacturing cost, not requiring high lubrication conditions, hydraulic drive being suitable for heavy-load and overload scenarios, and having an interlocking structure.

Description

Technical Field

[0001] The invention belongs to the technical field of height-adjusting rails, and in particular relates to a chain-type height-adjusting rail system. Background Art

[0002] The existing height-adjusting and rail-pulling device uses a screw and gear transmission type, which has the following defects: 1) Since gear meshing has high requirements on manufacturing and installation accuracy and the processing is complex, the cost is high. In addition, the lubrication condition of the gear transmission has an important impact on its performance. Improper lubrication may lead to increased noise and vibration, which is easily restricted by the lubrication conditions; 2) Since the existing height-adjusting and rail-pulling device is used in outdoor working environments, it is easy to cause changes in the guide and increase in friction resistance due to long-term impact loads and untimely equipment maintenance and lubrication during use; 3) Since the output end of the motor reducer is an unadjustable large torque constant force output, and the height-adjusting mechanism and the lateral rail pull are subjected to sudden external load increases for a long time, it will cause deformation of the transmission and guide mechanism, deformation and jamming of the bevel gear, and severe wear of the screw nut, which will become the main fault condition for the later maintenance of long rail vehicles. Summary of the invention

[0003] The present invention aims to provide a chain-type height-adjusting rail derailing system, in which the transmission and guide mechanisms are not easily deformed and the manufacturing and installation precision requirements are low, so as to solve the problems that the existing height-adjusting rail derailing device transmission adopts the lead screw and gear transmission type, the gear meshing has high requirements on the manufacturing and installation precision and is easily restricted by lubrication conditions, and the output end of the motor reducer has an unadjustable large torque constant force output, which will cause the deformation of the transmission and guide mechanisms, the deformation and jamming of the bevel gears, and the serious wear of the lead screw nut.

[0004] To this end, the technical solution adopted by the present invention is: a chain-type height-adjusting rail-deflecting system, comprising a rail-deflecting mechanism located below, a lifting and mounting platform located above, a chain transmission mechanism installed on the lifting and mounting platform, a column that circumferentially supports the lifting and mounting platform, and a chain connecting mechanism symmetrically fixed at the left and right ends of the rail-deflecting mechanism, wherein the chain transmission mechanism is connected to the chain connecting mechanism, and the chain transmission mechanism comprises four sprocket seats symmetrically installed on the lifting and mounting platform front and back, sprockets installed on the sprocket seats, four chains that pass around the sprockets in twos in parallel, a moving trolley that synchronously pulls the chains, a hydraulic drive assembly that provides driving force for the moving trolley, and a guide rail for the left and right horizontal movement of the moving trolley, and the chain connecting mechanism is a front and rear mirror-symmetrical structure, and the chain connecting mechanism comprises a chain fixing seat fixedly connected to the chain, a limiting pulley assembly located outside the chain fixing seat, and a vertical guide bracket for the upper and lower limiting activities of the limiting pulley assembly, and when the moving trolley moves to the left to synchronously lower the chain or moves to the right to synchronously lift the chain, the rail-deflecting mechanism is driven to descend or rise horizontally through the chain connecting mechanism.

[0005] As a preferred embodiment of the above scheme, the track shifting mechanism includes a roller beam supporting the rails, two rail shifting grooves located on the front side of the roller beam and arranged in parallel front and back, a rail shifting movable column moving laterally along the rail shifting groove, and a rail shifting hydraulic cylinder driving the rail shifting movable column to move, and the structural design is reasonable; the telescopic ends of the rail shifting hydraulic cylinder are arranged facing each other, and the front and rear two rail shifting movable columns ensure that the rail can be shifted at any position, thereby maximizing the lateral rail shifting length range; a guide inclined plate is provided on the rear side of the roller beam to facilitate the movement of the rails and avoid bumps.

[0006] The right and left sprockets are connected to the left and right sprockets at the bottom ends of the two chains, and the left and right sprockets are connected to the left and right sprockets at the bottom ends of the two chains.

[0007] It is further preferred that rollers are provided at intervals on the left and right sides of the front and rear ends of the mobile trolley, and the structure is reasonable. A limit frame is provided on the top of the mobile trolley for the right chain to pass horizontally after bypassing the sprocket on the left sprocket seat. The hydraulic drive assembly includes a hydraulic station and a trolley drive hydraulic cylinder, and the mobile trolley is fixedly installed at the telescopic end of the trolley drive hydraulic cylinder. When the system encounters an overload condition, the pressure of the high-pressure chamber of the unloading valve is greater than the back pressure of the back pressure chamber, pushing the piston down to open the oil return port, and the hydraulic oil quickly leaks back to the oil tank. This process protects the equipment from the destructive consequences caused by excessive driving force during operation; the trolley drive hydraulic cylinder is installed on the lifting installation platform through the hinge seat on the right side, and the sprocket seat is provided with a chain limit stopper that keeps the chain bypassing the sprocket in a horizontal or vertical state. The design structure is reasonable, ensuring the fit between the chain and the sprocket while also ensuring the stability of the chain.

[0008] Further preferably, the lifting and installing platform is installed with chain limit baffles located on the left and right sides of the right chain extending horizontally below, and locking blocks are provided between the chain limit baffles to adjust the moving path length of the moving trolley, and the lifting and installing platform is installed with a chain bracket supporting the right chain extending horizontally above, and the left and right chain limit baffles are in the same direction as the chain bracket to ensure the stable movement of the chain in the upper and lower horizontal states, and the design structure is reasonable.

[0009] Further preferably, a chain support rack is provided in the center of the left side of the lifting and installing platform, and the chain support rack is equipped with a wire harness storage support chain that passes vertically downward through the lifting and installing platform. The chain connecting mechanism is provided with a notch for the bottom end of the wire harness storage support chain to pass through, thereby ensuring that the wire harness connected to the hydraulic drive is arranged in a regular manner and reducing safety hazards. The wire harness storage support chain can accommodate the wire harnesses on the lifting and installing platform and the track pulling mechanism, and the design is reasonable.

[0010] It is further preferred that an assembly lug is provided on the outer side of the chain fixing seat to facilitate lifting during installation and maintenance; the vertical guide bracket is in an "I"-shaped structure, and the top end is fixed to the bottom of the lifting installation platform through a mounting plate; the limiting pulley assembly includes a mounting frame with an opening toward the vertical guide bracket, a limiting roller and a roller rotatably mounted on the mounting frame; the limiting roller extends into the groove of the vertical guide bracket and is mounted on the mounting frame with a bearing and can roll along the inner wall of the groove of the vertical guide bracket, thereby reducing friction resistance during the up and down movement of the limiting pulley assembly; the roller is mounted on the side wall of the mounting frame and can slide along the edge of the groove of the vertical guide bracket; only one roller needs to be provided at each of the four corners to limit the lateral deviation of the track derailment mechanism, thereby reducing costs.

[0011] It is further preferred that the rail shifting movable column is connected to the telescopic end of the rail shifting hydraulic cylinder through a rail shifting moving trolley, the rail shifting moving trolley is hingedly connected to the telescopic end of the rail shifting hydraulic cylinder, and rail shifting movable rollers are arranged at intervals on the front and rear sides, and the rail shifting slide groove adopts "C"-shaped channel steel and is vertically arranged with front and rear mirror symmetry, thereby forming a side groove for the rail shifting movable roller to roll, and the structural design is reasonable.

[0012] More preferably, the chain is a double-row chain with a stable structure.

[0013] Beneficial effects of the present invention:

[0014] (1) Compared with the existing height adjustment and rail derailment device which adopts the screw and gear transmission type, this scheme adopts the chain transmission method. The main frame of the freight train is a welded structure, so it has a certain degree of deflection. Therefore, the use accuracy requirement of the height adjustment and rail derailment device is not high. Therefore, this scheme can meet the height adjustment and rail derailment requirements while reducing the manufacturing accuracy and the cost. In addition, the chain does not require high lubrication conditions, and is easy to install, debug and maintain later.

[0015] (2) The hydraulic drive assembly can achieve overload protection. This protection mechanism is a unique advantage of hydraulic drive over other drive modes. It is particularly suitable for application scenarios that need to withstand heavy loads or may be overloaded. Therefore, it can effectively avoid the situation where the output end of the motor reducer is an unadjustable large torque constant force output, which will cause deformation of the transmission and guide mechanism, deformation and jamming of the bevel gear, and severe wear of the screw nut.

[0016] (3) The chain transmission mechanism installed on the lifting installation platform is connected to the rail-pushing mechanism through a chain connection mechanism. When the hydraulic drive assembly is started, the mobile trolley moves to the left to lower the chain synchronously or moves to the right to lift the chain synchronously. The chain connection mechanism can drive the rail-pushing mechanism to descend or rise horizontally. The structure is interlocking, and the left and right symmetrical chains move synchronously under the drive of the mobile trolley. The conception is novel and the design is ingenious.

[0017] In summary, the present invention has the advantages of reducing manufacturing precision, reducing construction cost, not requiring high lubrication conditions, hydraulic drive being suitable for heavy load and overload scenarios, and having an interlocking structure. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 for Figure 1 Top view of the .

[0020] Figure 3 for Figure 1 AA section top view.

[0021] Figure 4 This is a top view of the track derailleur mechanism (the raceway beam is not shown).

[0022] Figure 5 This is the front view of the right chain path.

[0023] Figure 6 for Figure 1 Left view of .

[0024] Figure 7 This is a top view of the chain moving trolley.

[0025] Figure 8 It is a cross-sectional view of the limiting pulley assembly. DETAILED DESCRIPTION

[0026] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0027] Combination Figure 1 — Figure 8 As shown, a chain-type height-adjusting rail-pushing system is composed of a rail-pushing mechanism 1 located at the bottom, a lifting and mounting platform 2 located at the top, a chain transmission mechanism 3 installed on the lifting and mounting platform 2, columns 4 circumferentially supporting the lifting and mounting platform 2, and chain connection mechanisms 5 symmetrically fixed at the left and right ends of the rail-pushing mechanism 1.

[0028] The chain transmission mechanism 3 is connected to the chain connecting mechanism 5 .

[0029] The chain transmission mechanism 3 consists of four sprocket seats symmetrically installed on the lifting installation platform 2, a sprocket 31 installed on the sprocket seat, four chains 34 that pass around the sprockets 31 in parallel, a chain moving trolley 32 that synchronously pulls the chains 34, a hydraulic drive component 33 that provides driving force for the chain moving trolley 32, and a guide rail 37 for the chain moving trolley 32 to move horizontally left and right.

[0030] The rail derailing mechanism 1 is composed of a roller beam 11 supporting the steel rail 6, two rail derailing chutes 12 located in front of the roller beam 11 and arranged in parallel front and back, a rail derailing movable column 13 moving laterally along the rail derailing chutes 12, and a rail derailing hydraulic cylinder 14 driving the rail derailing movable column 13 to move.

[0031] The telescopic ends of the rail-pulling hydraulic cylinder 14 are arranged facing each other.

[0032] A guide inclined plate 111 is provided at the rear side of the raceway beam 11 .

[0033] The rail-pushing movable column 13 is connected to the telescopic end of the rail-pushing hydraulic cylinder 14 through a rail-pushing moving trolley 15 .

[0034] The rail-moving trolley 15 is hingedly connected to the telescopic end of the rail-moving hydraulic cylinder 14, and rail-moving movable rollers 151 are spaced apart at the front and rear sides.

[0035] The rail-pulling slide groove 12 is vertically arranged with a "C"-shaped channel steel having a mirror-symmetrical front and rear shape, so as to form a side groove for the rail-pulling movable roller 151 to roll.

[0036] A chain support frame 23 is provided in the center of the left side of the lifting and installing platform 2.

[0037] The chain support frame 23 is provided with a wire harness storage chain 24 which passes vertically downward through the lifting installation platform 2 .

[0038] The chain connecting mechanism 5 is provided with a notch for the bottom end of the wire harness storage support chain 24 to pass through.

[0039] The sprocket seat is composed of a left sprocket seat 35 and a right sprocket seat 36.

[0040] The left sprocket seat 35 has two sprockets 31 mounted in parallel.

[0041] A sprocket 31 is mounted on the right sprocket seat 36 .

[0042] The chain 34 is composed of two left chains 341 whose ends connect the chain moving trolley 32 and the chain connecting mechanism 5 located on the left side, and two right chains 342 whose bottom ends are fixedly connected to the chain connecting mechanism 5 located on the right side.

[0043] One end of the right chain 342 is fixed to the bottom of the chain moving trolley 32, and the other end horizontally passes through a sprocket 31 on the left sprocket seat 35 and the right sprocket seat 36 in sequence from below, and then extends vertically downward to be fixedly connected with the corresponding side chain connecting mechanism 5.

[0044] The lifting and installing platform 2 is installed with chain limiting baffles 21 spaced apart and located at the left and right sides of the right chain 342 extending horizontally below.

[0045] Locking blocks are provided between the chain limit baffles 21 to adjust the moving path length of the chain moving trolley 32 .

[0046] The lifting and mounting platform 2 is installed with a chain bracket 22 supporting a right chain 342 extending horizontally above.

[0047] The left and right chain limit baffles 21 and the chain bracket 22 have the same direction.

[0048] One end of the left chain 341 is fixed to the top of the chain moving trolley 32 , and the other end horizontally passes around another sprocket 31 on the left sprocket seat 35 from above and then extends vertically downward to be fixedly connected with the corresponding side chain connecting mechanism 5 .

[0049] The chain 34 is preferably a double-row chain.

[0050] Rollers 322 are arranged at intervals on the left and right sides of the front and rear ends of the chain moving trolley 32 , and a limit frame 321 is arranged on the top of the chain moving trolley 32 for the right chain 342 to pass horizontally after bypassing the sprocket 31 on the left sprocket seat 35 .

[0051] The hydraulic drive assembly 33 is composed of a hydraulic station 331 and a trolley driving hydraulic cylinder 332 , and the chain moving trolley 32 is fixedly installed at the telescopic end of the trolley driving hydraulic cylinder 332 .

[0052] The trolley driving hydraulic cylinder 332 is installed on the lifting installation platform 2 through the hinge seat 333 on the right side.

[0053] The sprocket seat is provided with a chain limit stopper to keep the chain 34 passing around the sprocket 31 in a horizontal or vertical state.

[0054] The chain connection mechanism 5 has a front-to-back mirror-symmetrical structure.

[0055] The chain connection mechanism 5 is composed of a chain fixing seat 51 fixedly connected to the chain 34 , a limiting pulley assembly 52 located outside the chain fixing seat 51 , and a vertical guide bracket 53 for the limiting pulley assembly 52 to limit the upper and lower positions.

[0056] An assembly lug 511 is disposed on the outer side of the chain fixing seat 51 .

[0057] The vertical guide bracket 53 is in an I-shaped structure, and the top end is fixed to the bottom of the lifting installation platform 2 through a mounting plate.

[0058] The limiting pulley assembly 52 is composed of a mounting frame 521 with an opening facing the vertical guide bracket 53 , a limiting roller 522 and an anti-transverse movement roller 523 which are both rotatably mounted on the mounting frame 521 .

[0059] The limiting roller 522 is mounted on the mounting frame 521 by means of a bearing and can roll along the inner side wall of the groove of the vertical guide bracket 53 .

[0060] The anti-transverse roller 523 is installed on the side wall of the mounting frame 521 and can slide along the edge of the groove of the vertical guide bracket 53.

[0061] When the chain moving trolley 32 moves to the left to synchronously lower the chain 34 or moves to the right to synchronously lift the chain 34, the rail-moving mechanism 1 is driven to descend or rise horizontally through the chain connecting mechanism 5.

[0062] First start the hydraulic station 331, then start the trolley driving hydraulic cylinder 332, the trolley driving hydraulic cylinder 332 drives the chain moving trolley 32 to move, thereby driving the rail derailleur mechanism 1 to rise and fall smoothly, and finally press the stop button, the rail derailleur mechanism 1 stops and remains at the specified position, press the return button, and the rail derailleur mechanism 1 automatically descends to the lowest point.

Claims

1. A chain-type height adjustment rail system, characterized in that: The invention comprises a rail-pushing mechanism (1) located at the bottom, a lifting and mounting platform (2) located at the top, a chain transmission mechanism (3) installed on the lifting and mounting platform (2), a column (4) circumferentially supporting the lifting and mounting platform (2), and a chain connecting mechanism (5) symmetrically fixed to the left and right ends of the rail-pushing mechanism (1), wherein the chain transmission mechanism (3) is connected to the chain connecting mechanism (5), and the chain transmission mechanism (3) comprises four sprocket seats symmetrically installed on the lifting and mounting platform (2) in front and back, a sprocket (31) installed on the sprocket seat, four chains (34) arranged in pairs and passing around the sprockets (31), a chain moving trolley (32) for synchronously pulling the chains (34), and a chain moving trolley (32) for the chain moving trolley. The chain connecting mechanism (5) is a front-to-rear mirror-symmetrical structure. The chain connecting mechanism (5) comprises a chain fixing seat (51) fixedly connected to the chain (34), a limit pulley assembly (52) located outside the chain fixing seat (51), and a vertical guide bracket (53) for the limit pulley assembly (52) to move up and down. When the chain moving trolley (32) moves to the left to synchronously lower the chain (34) or moves to the right to synchronously lift the chain (34), the chain connecting mechanism (5) drives the rail-pulling mechanism (1) to descend or rise horizontally. The sprocket seat comprises a left sprocket seat (35) and a right sprocket seat (36); the left sprocket seat (35) is provided with two sprockets (31) in parallel; the right sprocket seat (36) is provided with a sprocket (31); the chain (34) comprises two left chains (341) and two right chains (342); one end of the right chain (342) is fixed to the bottom of the chain moving trolley (32); the other end of the right chain (342) passes horizontally from below and in turn around a sprocket (31) on the left sprocket seat (35) and the right sprocket seat (36); and then extends vertically downward to be fixedly connected to a corresponding side chain connecting mechanism (5); one end of the left chain (341) is fixed to the top of the chain moving trolley (32); the other end of the left chain (341) passes horizontally from above and around another sprocket (31) on the left sprocket seat (35); and then extends vertically downward to be fixedly connected to a corresponding side chain connecting mechanism (5).

2. A chain-type height-adjusting rail system according to claim 1, characterized in that: The rail shifting mechanism (1) comprises a roller beam (11) supporting a steel rail (6), two rail shifting slide grooves (12) located on the front side of the roller beam (11) and arranged in parallel front and back, a rail shifting movable column (13) moving laterally along the rail shifting slide grooves (12), and a rail shifting hydraulic cylinder (14) driving the rail shifting movable column (13) to move, wherein the telescopic ends of the rail shifting hydraulic cylinder (14) are arranged facing each other, and a guide inclined plate (111) is provided on the rear side of the roller beam (11).

3. A chain-type height-adjusting rail system according to claim 1, characterized in that: The chain moving trolley (32) is provided with rollers (322) at intervals on the left and right sides of the front and rear ends. A limit frame (321) is provided on the top of the chain moving trolley (32) for the right chain (342) to pass horizontally after bypassing the sprocket (31) on the left sprocket seat (35). The hydraulic drive assembly (33) comprises a hydraulic station (331) and a trolley driving hydraulic cylinder (332). The chain moving trolley (32) is fixedly mounted on the telescopic end of the trolley driving hydraulic cylinder (332). The trolley driving hydraulic cylinder (332) is mounted on the lifting installation platform (2) via a hinge seat (333) on the right side. The sprocket seat is provided with a chain limit stopper for keeping the chain (34) bypassing the sprocket (31) in a horizontal or vertical state.

4. The chain-type height-adjusting rail system according to claim 1, characterized in that: The lifting and installing platform (2) is installed with chain limit baffles (21) spaced apart on the left and right sides of the right chain (342) extending horizontally below, and locking blocks are provided between the chain limit baffles (21) to adjust the moving path length of the chain moving trolley (32). The lifting and installing platform (2) is installed with a chain bracket (22) supporting the right chain (342) extending horizontally above, and the left and right chain limit baffles (21) and the chain bracket (22) have the same direction.

5. The chain-type height-adjusting rail system according to claim 1, characterized in that: A chain support frame (23) is provided in the center of the left side of the lifting and installation platform (2), and a wire harness storage support chain (24) is installed on the chain support frame (23) and passes vertically downward through the lifting and installation platform (2), and the chain connection mechanism (5) is provided with a notch for the bottom end of the wire harness storage support chain (24) to pass through.

6. The chain-type height-adjusting rail system according to claim 1, characterized in that: The chain fixing seat (51) is provided with an assembly lug (511) on the outside. The vertical guide bracket (53) is in an "I"-shaped structure, and the top end is fixed to the bottom of the lifting installation platform (2) through a mounting plate. The limiting pulley assembly (52) comprises a mounting frame (521) with an opening facing the vertical guide bracket (53), a limiting roller (522) and an anti-transverse movement roller (523) both of which are rotatably mounted on the mounting frame (521). The limiting roller (522) is mounted on the mounting frame (521) using a bearing and can roll along the inner side wall of the groove of the vertical guide bracket (53). The anti-transverse movement roller (523) is mounted on the side wall of the mounting frame (521) and can slide along the edge of the groove of the vertical guide bracket (53).

7. The chain-type height-adjusting rail system according to claim 2, characterized in that: The rail-pushing movable column (13) is connected to the telescopic end of the rail-pushing hydraulic cylinder (14) via a rail-pushing moving trolley (15). The rail-pushing moving trolley (15) is hingedly connected to the telescopic end of the rail-pushing hydraulic cylinder (14), and rail-pushing movable rollers (151) are arranged at intervals on the front and rear sides. The rail-pushing slide groove (12) is vertically arranged with front and rear mirror symmetry using "C"-shaped channel steel, so as to form a side groove for the rail-pushing movable rollers (151) to roll.

8. The chain-type height-adjusting rail system according to claim 1, characterized in that: The chain (34) is a double-row chain.

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