Hydraulic rail clamp device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NO 2 ENG CO LTD OF CCCC FIRST HARBOR ENG
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-24
Smart Images
Figure CN224547905U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rail clamping technology, and in particular relates to a hydraulic rail clamping device. Background Technology
[0002] A rail clamp is a safety device used to secure rail-mounted lifting equipment or mobile devices. It clamps the caisson to the rail using mechanical or hydraulic means. In the transportation of caissons from some prefabrication yards, the caissons are transported via a capsule trolley. One end of the capsule trolley is connected to a jacking cylinder, and the other end of the jacking cylinder is connected to the rail clamp. The rail clamp clamps the rail to secure the jacking cylinder. The extension of the jacking cylinder drives the capsule trolley to move, thus moving the caisson. However, existing traditional rail clamps have significant drawbacks in practical applications. During frequent operations of caisson transport, the rail clamps and rails often become too tightly interlocked due to excessive clamping force. When it is necessary to loosen the rail clamps to move the caisson, it is difficult to release the clamping state smoothly. This not only consumes a lot of manpower and time for adjustment, but may also cause damage to the rail clamp components or wear on the rails due to forced loosening.
[0003] Therefore, designing a rail clamp that can prevent the rail from being unable to be released due to excessive clamping is of great significance for improving the efficiency and safety of caisson transportation. Utility Model Content
[0004] To address the shortcomings of related technologies, this utility model provides a hydraulic rail clamping device. By setting a spring to apply tension to the upper ends of the two clamping blocks, the lower ends of the clamping blocks can rotate away from the side of the rail, thereby avoiding the problem that the rail clamp and the rail cannot be released due to excessive clamping.
[0005] This utility model provides a hydraulic rail clamping device, comprising: The clamping element includes two opposing clamping blocks, with a pin connecting the middle portion of the clamping blocks. The two clamping blocks are rotatably connected via the same pin. The lower end of the clamping blocks is used to clamp the rail. A clamping cylinder is located between two clamping blocks and above the pin; the clamping cylinder can extend and retract along the direction in which the two clamping blocks are positioned opposite each other. The spring has its two ends connected to the upper ends of the two clamping blocks; the spring is located above the pin. When the clamping cylinder extends, the lower ends of the two clamping blocks rotate toward each other to clamp the track, while the spring is stretched. When the clamping cylinder retracts, the spring pulls the upper ends of the two clamping blocks to rotate toward each other.
[0006] This technical solution involves setting two clamping blocks opposite to each other, and setting a clamping cylinder to extend and retract along the direction in which the two clamping blocks are opposite to each other, so as to drive the lower ends of the two clamping blocks to rotate in a direction closer to each other, thereby clamping the track. By setting a spring, with the two ends of the spring correspondingly connected to the two clamping blocks, the spring pulls the upper ends of the two clamping blocks to rotate in a direction closer to each other when the clamping cylinder retracts, thereby releasing the clamping blocks from the track.
[0007] In some embodiments, the two clamping blocks correspond to a first clamping block and a second clamping block; the first clamping block has an oil passage defined inside, one end of the first clamping block in the length direction is provided with a first inlet and outlet, and the side of the first clamping block facing the second clamping block is provided with a second inlet and outlet, which are connected to the inlet and outlet of the clamping cylinder for oil inlet and outlet.
[0008] This technical solution saves on pipelines by setting up an oil passage on the first clamping block to supply oil to the clamping cylinder, while avoiding the adverse consequences caused by pipeline entanglement.
[0009] In some embodiments, the two clamps are provided with ears on opposite sides, and the ears are provided with connecting holes through which the pin passes.
[0010] In some embodiments, multiple ears are provided, and the multiple ears are arranged along the length direction of the clamping block; the ears of two clamping blocks are spaced apart from each other.
[0011] In some embodiments, friction plates are provided on the opposite sides of the two clamping blocks, and the friction plates are located at the lower end of the clamping blocks for contact with the track.
[0012] In some embodiments, a front plate is also included, which is connected to the pin and is located at one end of the clamping block along its length. A connecting lug is provided on the side of the front plate away from the front plate for connecting to the push cylinder.
[0013] In some embodiments, a tail plate is also included, which is connected to the pin and located at the other end of the clamping block along its length; the tail plate is connected to a roller that can roll along the track.
[0014] In some embodiments, a force transmission rod is also included, which is arranged along the length of the clamping block; the two ends of the force transmission rod are connected to the front plate and the tail plate respectively.
[0015] In some embodiments, multiple clamping elements are provided, and the multiple clamping elements are arranged along the length direction of the clamping block; the multiple clamping elements are set independently of each other.
[0016] In some embodiments, multiple clamping cylinders are provided, and the multiple clamping cylinders are arranged along the length direction of the clamping block; the multiple clamping cylinders are used to drive the same clamping element to clamp.
[0017] Based on the above technical solution, in this embodiment of the utility model, the hydraulic rail clamping device extends the clamping cylinder to drive the clamping member to clamp the rail; and by setting a spring, the spring applies a pulling force to the upper end of the two clamping blocks when the clamping cylinder contracts, so that the lower end of the clamping blocks can rotate away from the side of the rail, thereby avoiding the problem that the rail clamp and the rail cannot be released due to excessive clamping. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of one embodiment of the hydraulic rail clamping device of this utility model, in cooperation with the jacking cylinder, the rail and the capsule trolley; Figure 2 This is a schematic diagram of the structure of one embodiment of the hydraulic rail clamping device of this utility model when it is used in conjunction with a rail; Figure 3 This is a schematic diagram of the structure of one embodiment of the hydraulic rail clamping device of this utility model; Figure 4 This is a structural schematic diagram of another embodiment of the hydraulic rail clamping device of this utility model from another angle; Figure 5 This is a schematic diagram of the structure of the clamping member and the front plate during assembly in one embodiment of the hydraulic rail clamping device of this utility model; Figure 6 This is a schematic diagram of the structure of the clamping component, tail plate, and roller assembly in one embodiment of the hydraulic rail clamping device of this utility model. Figure 7 This is a schematic diagram of the structure of the first clamping block when the clamping cylinder is installed in one embodiment of the hydraulic rail clamping device of this utility model; Figure 8 This is a schematic diagram of the structure of the second clamping block in one embodiment of the hydraulic rail clamping device of this utility model.
[0019] In the picture: 1. Hydraulic rail clamping device; 2. Pushing cylinder; 3. Capsule trolley; 4. Rail; 11. Clamping component; 12. Front plate; 13. Force transmission rod; 14. Spring; 15. Lifting ring; 16. Roller; 17. Tail plate; 18. Pressure boosting valve; 19. Clamping cylinder; 111. Friction plate; 112. Clamping block; 113. Ear; 114. Anti-collision part; 1121. First clamping block; 1122. Second clamping block; 101. Pin; 121. Connecting ear; 141. Bracket; 171. Connecting part; 191. Saddle. Detailed Implementation
[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0021] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] As attached Figure 1 As shown in an illustrative embodiment of the hydraulic rail clamping device of this utility model, the hydraulic rail clamping device 1 is used to clamp the rail 4; one end of the hydraulic rail clamping device 1 is connected to the push cylinder 2, and the other end of the push cylinder 2 is connected to the capsule trolley 3. When the hydraulic rail clamping device 1 clamps the rail 4, the push cylinder 2 extends to drive the capsule trolley 3 to move; when the hydraulic rail clamping device 1 releases the rail 4, the push cylinder 2 retracts to pull the hydraulic rail clamping device 1 towards the push cylinder 2.
[0025] It should be noted that the weight of the capsule trolley 3 is much greater than that of the hydraulic rail clamping device 1. Therefore, when the push cylinder 2 retracts, the capsule trolley 3 can fix one end of the push cylinder 2 connected to the capsule trolley 3, thereby causing the other end of the push cylinder 2 to pull the hydraulic rail clamping device 1 to move.
[0026] like Figures 2-8 As shown, the hydraulic rail clamping device 1 includes a clamping member 11, a clamping cylinder 19, and a spring 14. The clamping member 11 is used to clamp the rail 4. The clamping member 11 includes two opposing clamping blocks 112, with a pin 101 connected to the middle part of the clamping blocks 112. The two clamping blocks 112 are rotatably connected by the same pin 101. The clamping cylinder 19 is located between the two clamping blocks 112 and above the pin 101. The clamping cylinder 19 moves along the direction in which the two clamping blocks 112 are opposing. The clamping cylinder 19 extends and retracts; the spring 14 is used to pull the clamping block 112 back to its original position; the two ends of the spring 14 are connected to the upper ends of the two clamping blocks 112 respectively; the spring 14 is located above the pin 101; when the clamping cylinder 19 extends, the lower ends of the two clamping blocks 112 rotate toward each other to clamp the track 4, and the spring 14 is stretched at the same time; when the clamping cylinder 19 retracts, the spring 14 pulls the upper ends of the two clamping blocks 112 to rotate toward each other, so that the two clamping blocks 112 release the track 4.
[0027] The aforementioned hydraulic rail clamping device 1 is designed with clamping member 11 comprising two opposing clamping blocks 112, and a clamping cylinder 19 is provided to extend along the direction in which the two clamping blocks 112 are positioned opposite each other, so as to drive the lower ends of the two clamping blocks 112 to rotate in a direction closer to each other, thereby clamping member 11 clamping rail 4; by providing spring 14, the two ends of spring 14 are correspondingly connected to the two clamping blocks 112, so that spring 14 pulls the upper ends of the two clamping blocks 112 to rotate in a direction closer to each other, thereby releasing the clamping blocks 112 from rail 4.
[0028] It should be noted that when the clamping cylinder 19 extends, the spring 14 is stretched. Although the stretched spring 14 also applies a pulling force to the clamping block 112, the pulling force of the spring 14 is less than the pushing force of the clamping cylinder 19 on the clamping block 112.
[0029] like Figure 2 As shown, the pin 101 is arranged in the horizontal direction so that the two clamping blocks 112 rotate relative to each other in the horizontal direction; the two clamping blocks 112 are located on both sides of the track 4 so as to clamp the track 4 through the mutual cooperation of the two clamping blocks 112; the pin 101 is connected to the middle part of the clamping block 112, and the lower end of the clamping block 112 is in contact with the side of the track 4.
[0030] The clamping block 112 has a larger dimension along the extension direction of the track 4 to increase the mating area between the clamping block 112 and the track 4, thereby increasing the clamping effect of the clamping member 11 on the track 4. The length direction of the clamping block 112 is set along the extension direction of the track 4.
[0031] like Figure 7 and Figure 8 As shown, each of the two clamping blocks 112 has an ear 113 on its opposite side. The ear 113 has a through hole through which the pin 101 passes, so that the two clamping blocks 112 are rotatably connected by the pin 101.
[0032] Multiple ears 113 are provided, and the multiple ears 113 are arranged along the length direction of the clamping block 112; the ears 113 of two clamping blocks 112 are arranged at intervals.
[0033] like Figure 2 As shown, friction plates 111 are respectively provided on one side of the two clamping blocks 112 facing each other. The friction plates 111 are located at the lower end of the clamping blocks 112 and are used to contact the track 4. The friction plates 111 are detachably connected to the clamping blocks 112. When the friction plates 111 are damaged, they can be replaced to increase the service life of the clamping blocks 112.
[0034] In some embodiments, the two clamping blocks 112 are provided with mounting grooves on opposite sides, the mounting grooves are located at the lower end of the clamping blocks 112, and the mounting grooves are used to install the friction pads 111.
[0035] like Figures 3-6 As shown, the top of the clamping block 112 is provided with a lifting ring 15, which is used to move the rail clamp 1.
[0036] like Figure 7 As shown, multiple clamping cylinders 19 are provided, and the multiple clamping cylinders 19 are arranged along the length direction of the clamping block 112. The multiple clamping cylinders 19 are used to drive the same clamping member 11 to clamp. The multiple clamping cylinders 19 work at the same time so that the clamping block 112 is in uniform contact with the track 4.
[0037] For ease of description, in this embodiment, the two clamping blocks 112 are referred to as the first clamping block 1121 and the second clamping block 1122, respectively.
[0038] The first clamping block 1121 has an internal oil passage defined therein. One end of the first clamping block 1121 in the length direction is provided with a first inlet and outlet. The side of the first clamping block 1121 facing the second clamping block 1122 is provided with a second inlet and outlet. The second inlet and outlet are connected to the inlet and outlet of the clamping cylinder 19 for oil inlet and outlet.
[0039] like Figure 6As shown, a pressure boosting valve 18 is provided at the first inlet and outlet. The pressure boosting valve 18 is used to increase the oil pressure of the rail clamp 1. When the oil pump reaches the set pressure, the oil pressure of the rail clamp 1 can be increased through the pressure boosting valve 18.
[0040] When multiple clamping cylinders 19 are set, multiple second inlets and outlets are also set, with each of the multiple second inlets and outlets corresponding to one of the multiple clamping cylinders 19.
[0041] like Figure 7 and Figure 8 As shown, the clamping cylinder 19 includes a fixed end and a telescopic end. The inlet and outlet of the clamping cylinder 19 are located at the fixed end. The fixed end is connected to the first clamping block 1121, and the telescopic end is connected to the second clamping block 1122. When the telescopic end extends, it will drive the first clamping block 1121 and the second clamping block 1122 to clamp the track 4. When the telescopic end retracts, it will drive the first clamping block 1121 and the second clamping block 1122 to release the track 4.
[0042] In some embodiments, such as Figure 7 As shown, a saddle 191 is provided on the side of the first clamping block 1121 facing the second clamping block 1122. The saddle 191 is used to mount the clamping cylinder 19. The saddle 191 can prevent the clamping cylinder 19 from directly contacting the first clamping block 1121, thereby protecting the clamping cylinder 19 and the first clamping block 1121. At the same time, the stroke of the cylinder can be adjusted by replacing the saddle 191.
[0043] It should be noted that since the dimensions of the saddle 191 are adjustable, the stroke of the clamping cylinder 19 can be adjusted by replacing the saddle 191, thereby adjusting the opening and closing size of the first clamping block 1121 and the second clamping block 1122.
[0044] In some embodiments, such as Figure 8 As shown, the second clamping block 1122 has an anti-collision part 114 on the side facing the first clamping block 1121. The anti-collision part 114 is in contact with the telescopic end to prevent the telescopic end from directly contacting the second clamping block 1122, thereby protecting the clamping cylinder 19 and the second clamping block 1122.
[0045] It should be noted that when the clamping cylinder 19 retracts, the telescopic end does not contact the second clamping block 1122, and the telescopic end disengages from the anti-collision part 114.
[0046] like Figure 2 and Figure 4As shown, spring 14 is used to pull the upper ends of the first clamping block 1121 and the upper ends of the second clamping block 1122 to rotate towards each other, so that the lower ends of the first clamping block 1121 and the lower ends of the second clamping block 1122 rotate away from each other, thereby releasing the first clamping block 1121 and the second clamping block 1122 from the track 4. The two ends of spring 14 are respectively connected to the upper ends of the first clamping block 1121 and the upper ends of the second clamping block 1122; spring 14 is located above pin 101.
[0047] In some embodiments, such as Figure 5 and Figure 6 As shown, the top of the clamping block 112 is provided with a bracket 141, and the two ends of the spring 14 are connected to the brackets 141 of the two clamping blocks 112 respectively.
[0048] like Figures 2-5 and Figure 8 As shown, the aforementioned hydraulic rail clamping device 1 also includes a front plate 12, which is connected to the pin 101 and is located at one end of the clamping block 112 along its length. A connecting ear 121 is provided on the side of the front plate 12 facing away from the clamping block 112; the connecting ear 121 is used to connect to the push cylinder 2. The other end of the push cylinder 2 is connected to the capsule trolley 3. When the rail clamping device 1 clamps the rail 4, the push cylinder 2 extends, driving the capsule trolley 3 to move. When the rail clamping device 1 releases the rail 4, the push cylinder 2 retracts, causing the rail clamping device 1 to move along the rail 4.
[0049] like Figures 2-4 , Figures 6-7 As shown, the hydraulic rail clamp device 1 also includes a tail plate 17, which is connected to the pin 101 and is located at the other end of the clamping block 112 in the length direction. The tail plate 17 is connected to a roller 16, which can roll along the track 4 to ensure that the rail clamp 1 moves in a straight line along the track 4 and to ensure that the rail clamp 1 does not tilt.
[0050] In some embodiments, such as Figures 6-7 As shown, the tail plate 17 has a connecting part 171 on the side away from the clamping block 112, and the roller 16 is connected to the connecting part 171 by bolts; the height of the roller 16 can be adjusted by turning the bolts to adapt to different specifications of track 4.
[0051] like Figures 2-4 As shown, the hydraulic rail clamping device 1 also includes a force transmission rod 13, which is arranged along the length of the clamping block 112. The two ends of the force transmission rod 13 are connected to the front plate 12 and the tail plate 17 respectively. The force transmission rod 13 is used to transmit the force on the front plate 12 to the tail plate 17 to prevent local stress concentration on the front plate 12.
[0052] When the jacking cylinder 2 retracts and pulls the rail clamp 1 to move along the track 4, the force transmission rod 13 transmits the pulling force of the jacking cylinder 2 on the rail clamp 1 to the tail plate 17, so as to avoid stress concentration and damage to the connecting ear 121.
[0053] When the track 4 becomes irregular due to bending deformation or collision, since the irregular shape is not on the same plane as the other side of the track 4, when the irregular shape is located in the mating area between the clamping block 112 and the side of the track 4, the presence of the irregular shape will reduce the contact area between the clamping block 112 and the side of the track 4, thus making the rail clamp 1 unable to effectively clamp the track 4.
[0054] Based on this, such as Figure 2 and Figure 3 As shown, in some embodiments of this application, multiple clamping members 11 are provided, and the multiple clamping members 11 are arranged along the length direction of the clamping block 112; the multiple clamping members 11 are set independently; when there is an irregular shape on the track 4 and the irregular shape is located in the mating area between the rail clamp 1 and the track 4, one or some of the clamping members 11 clamp the irregular shape, and the remaining clamping members 11 clamp other areas of the track 4 to ensure the contact area between the rail clamp 1 and the track 4, thereby ensuring the clamping effect of the rail clamp 1.
[0055] It should be noted that multiple clamping parts 11 are connected to the same pin 101.
[0056] The working principle of the clamping element 11 in the above-mentioned hydraulic rail clamping device 1 is as follows: the clamping cylinder 19 extends, causing the lower ends of the two clamping blocks 112 to rotate towards each other, so that the two clamping blocks 112 clamp the rail 4; the clamping cylinder 19 retracts, the two clamping blocks 112 are no longer pushed by the clamping cylinder 19, and the lower ends of the two clamping blocks 112 release the rail 4; when the clamping cylinder 19 extends, the spring 14 is stretched. Therefore, when the clamping cylinder 19 retracts, the spring 14 needs to return to its original length. The spring 14 will pull the upper ends of the two clamping blocks 112 to rotate towards each other, so that the lower ends of the two clamping blocks 112 rotate away from each other, so that the clamping blocks 112 return to the initial position, thereby ensuring that the clamping blocks 112 can release the rail 4.
[0057] Through the description of several embodiments of the hydraulic rail clamping device of this utility model, it can be seen that the embodiments of the hydraulic rail clamping device of this utility model have at least one or more of the following advantages: 1. By setting up a clamping cylinder 19, the clamping cylinder 19 extends along the direction in which the two clamping blocks 112 are arranged opposite each other, so as to drive the clamping blocks 112 to rotate, thereby clamping the clamping member 11 to clamp the track 4. The clamping cylinder 19 moves reliably and has high stability.
[0058] 2. By setting spring 14, spring 14 applies tension to the upper end of the two clamping blocks 112 when the clamping cylinder 19 retracts, so that the lower end of the clamping block 112 can rotate away from the side of the track 4, thereby avoiding the problem that the rail clamp 1 and the track 4 cannot be released due to excessive engagement.
[0059] 3. By setting a force transmission rod 13 to connect the front plate 12 and the tail plate 17, when the push cylinder 2 retracts and generates tension, the force transmission rod 13 can transmit the force to the tail plate 17, effectively dispersing the stress at the connecting ear 121, avoiding structural damage due to local stress concentration, and improving the structural reliability and service life of the hydraulic rail clamp device 1.
[0060] 4. By setting multiple clamping elements 11, and setting multiple clamping elements 11 independently, even if there are irregular areas in the track 4, multiple independent clamping elements 11 can still adaptively fit the surface of the track 4 and maintain sufficient contact area, thereby ensuring that the rail clamp 1 can maintain a stable and reliable clamping force under various working conditions, and effectively avoiding the problem of reduced clamping effect due to reduced contact area.
[0061] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0062] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. A hydraulic rail clamping device, characterized in that, include: A clamping element includes two opposing clamping blocks, the middle portion of which is connected to a pin, and the two clamping blocks are rotatably connected by the same pin; the lower end of each clamping block is used to clamp a track. A clamping cylinder is disposed between the two clamping blocks and above the pin; the clamping cylinder can extend and retract along the direction in which the two clamping blocks are arranged opposite each other; A spring, the two ends of which are connected to the upper ends of the two clamping blocks respectively; the spring is located above the pin. When the clamping cylinder extends, the lower ends of the two clamping blocks rotate toward each other to clamp the track, and the spring is stretched at the same time; when the clamping cylinder retracts, the spring pulls the upper ends of the two clamping blocks to rotate toward each other.
2. The hydraulic rail clamping device according to claim 1, characterized in that, The two clamping blocks are a first clamping block and a second clamping block; the first clamping block has an oil passage defined inside, and a first inlet and outlet are provided at one end of the first clamping block along its length, and a second inlet and outlet are provided on the side of the first clamping block facing the second clamping block. The second inlet and outlet are connected to the inlet and outlet of the clamping cylinder for oil inlet and outlet.
3. The hydraulic rail clamping device according to claim 1, characterized in that, Each of the two clamping blocks has an ear on one side facing the other, and the ear has a connecting hole through which the pin passes.
4. The hydraulic rail clamping device according to claim 3, characterized in that, The ear portion is configured as a plurality of portions, which are arranged along the length direction of the clamping block; the ears of two clamping blocks are spaced apart from each other.
5. The hydraulic rail clamping device according to claim 1, characterized in that, Friction plates are provided on one side of each of the two clamping blocks that are positioned opposite each other. The friction plates are located at the lower end of the clamping blocks and are used to contact the track.
6. The hydraulic rail clamping device according to claim 1, characterized in that, It also includes a front plate, which is connected to the pin and is located at one end of the length direction of the clamping block; the front plate has a connecting lug on the side opposite to the front plate, which is used to connect to the push cylinder.
7. The hydraulic rail clamping device according to claim 6, characterized in that, It also includes a tail plate, which is connected to the pin and is located at the other end of the clamping block along its length; the tail plate is connected to a roller, which can roll along the track.
8. The hydraulic rail clamping device according to claim 7, characterized in that, It also includes a force transmission rod, which is arranged along the length direction of the clamping block; the two ends of the force transmission rod are respectively connected to the front plate and the tail plate.
9. The hydraulic rail clamping device according to claim 1, characterized in that, The clamping elements are configured in multiple ways, and the multiple clamping elements are arranged along the length direction of the clamping block; the multiple clamping elements are set independently of each other.
10. The hydraulic rail clamping device according to claim 1, characterized in that, The clamping cylinders are configured in multiple ways, and the multiple clamping cylinders are arranged along the length direction of the clamping block; the multiple clamping cylinders are used to drive the same clamping element to clamp.