Road precast beam sliding device
By designing the sliding device of the prefabricated beams on the highway, the rolling friction between the rolling elements and the support plates can be used to achieve mobile transportation of the prefabricated beams, which solves the problem of difficulty in transporting prefabricated beams at short distances at the tunnel exit, and achieves efficient and low-cost transportation effects.
Patent Information
- Application Number
- CN202422340434.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-25
AI Technical Summary
During bridge construction, during the transportation of prefabricated box girders at short or zero distances at the tunnel exit, the bridge frame cannot pass normally due to the tunnel cross-sectional restrictions and the carrying beam body moves horizontally into place, resulting in difficulty in transportation.
A road prefabricated beam slip device is designed, including a base plate, a rolling element, a support plate, a base and a push assembly. By pushing the support plate, the rolling element rolls forward in the first receiving groove on the bottom plate, and the continuous moving transportation of the prefabricated beam is achieved by rolling friction.
The device can smoothly transport large weight prefabricated beams under special circumstances, reducing costs and labor demands, and solving the problem that prefabricated beams cannot be transported.
Smart Images
Figure CN222989737U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bridge construction, and particularly relates to a sliding device for highway precast beams. Background Art
[0002] In the field of bridge construction, precast box girders, as an efficient and economical structural form, are widely used in various large-scale bridge projects. However, despite the many advantages of precast box girders, such as high industrialization, diverse structural forms, and high construction efficiency, their transportation process often faces many difficulties and challenges, becoming a major problem in bridge construction.
[0003] In recent years, with the transfer of highway construction to remote areas in the northwest and southwest, there are more mountains crossed by highways. At short distances or zero distances near the tunnel exits, the working conditions of installing precast beams by bridge erection machines are increasing. Since the overall length of the bridge erection machine is generally more than 50 meters, when passing through the hole to erect the beam, part of the bridge erection machine is still inside the tunnel. Limited by the height and width of the tunnel cross-section, the bridge erection machine cannot pass through the hole normally and carry the beam body to move horizontally in place inside the tunnel. Therefore, a structure is needed to complete the installation of the first hole of beam slabs at a short distance at the tunnel exit by the bridge erection machine. Content of the Utility Model
[0004] In view of the deficiencies in the related art, the utility model provides a sliding device for highway precast beams. When the support plate is pushed, the support plate above the rolling body applies a force to the rolling body, and the rolling body rolls forward in the first receiving groove. At this time, the rolling body generates rolling friction with both the bottom plate and the support plate simultaneously. As the rolling body rolls, the rolling body at the rear gradually disengages from the support plate, and the rolling bodies in the forward direction sequentially contact the support plate, realizing continuous moving transportation. To solve the technical problem that precast beams cannot be transported under special circumstances in the prior art.
[0005] The utility model provides a sliding device for highway precast beams, including:
[0006] A bottom plate; a first receiving groove is formed in the upper surface of the bottom plate along its length direction;
[0007] Rolling bodies, the rolling bodies are cylindrical, and the rolling bodies are arranged at intervals along the length direction of the bottom plate in the first receiving groove; the rolling bodies are parallel to each other;
[0008] A support plate, a second receiving groove parallel to the first receiving groove is formed in the lower surface of the support plate; the support plate is placed above the rolling bodies, and the second receiving groove is used to receive the rolling bodies;
[0009] A base, on which a precast beam is placed;
[0010] A pushing assembly, which is used to push the support plate;
[0011] When the support plate drives the precast beam to move, the rolling elements roll.
[0012] In the technical solution, when the support plate is pushed, the support plate above the rolling elements applies a force to the rolling elements, and the rolling elements roll forward in the first receiving groove. At this time, the rolling elements simultaneously generate rolling friction with the bottom plate and the support plate. As the rolling elements roll, the rear rolling elements gradually disengage from the support plate, and the rolling elements in the forward direction sequentially contact the support plate, realizing continuous mobile transportation. In this solution, large-weight precast beams can be transported smoothly. And the cost is low, and the required manpower is also small.
[0013] In some of the embodiments, the pushing component is a chain hoist.
[0014] In the technical solution, the support plate is pulled by a chain hoist. The chain hoist has a low cost, is easy to carry, and does not require additional equipment support. And it is convenient for manual adjustment during the pulling process.
[0015] In some of the embodiments, the pushing component includes a base and a first hydraulic cylinder; wherein, the base is arranged at one end of the bottom plate in the length direction; both ends of the first hydraulic cylinder are respectively connected to the base and the support plate.
[0016] In the technical solution, the support plate and the precast beam can be pushed to move through the first hydraulic cylinder. Its pushing is stable and fast. It does not require multiple people to operate simultaneously.
[0017] In some of the embodiments, the pushing component includes a sliding seat and a second hydraulic cylinder; wherein, the sliding seat is used to be arranged above the rolling elements; a connecting piece is arranged on the sliding seat for connecting with the bottom plate; both ends of the second hydraulic cylinder are respectively connected to the sliding seat and the support plate.
[0018] In the technical solution, if the distance that the precast beam needs to move is too long and exceeds the maximum stroke of the hydraulic cylinder, the above solution can be adopted. In the above solution, after connecting the sliding seat to the bottom plate, the support plate and the precast beam are pushed to move through the second hydraulic cylinder. After the second hydraulic cylinder retracts, the sliding seat is moved close to the support plate, and then the sliding seat is fixed to the bottom plate and the above actions are repeated to realize the long-distance movement of the precast beam.
[0019] In some of the embodiments, the connecting piece includes a clamping member, and a plurality of first clamping grooves are arranged on the bottom plate along its length direction; the clamping member is used to be connected with the corresponding first clamping groove to realize the fixation of the sliding seat and the bottom plate.
[0020] In the technical solution, by inserting the card into the first card slot, the sliding seat can be fixed to the bottom plate, avoiding displacement between the bottom plate and the sliding seat when the second hydraulic cylinder works, ensuring the stability during construction.
[0021] In some of these embodiments, a third receiving groove is formed on the lower surface of the sliding seat, and the third receiving groove is used to receive the rolling elements.
[0022] In the technical solution, when the sliding seat moves, the rolling elements remain in the third receiving groove, and both ends of the rolling elements will contact the inner wall of the third receiving groove to achieve position limitation, avoiding deviation when the sliding seat moves.
[0023] In some of these embodiments, jacks are provided on both sides of the base, and the jacks are used to support the precast beam.
[0024] In the technical solution, when placing the precast beam on the base or removing the precast beam from the base, the precast beam can be lifted by the jacks, which is convenient for hoisting or operation by other equipment.
[0025] In some of these embodiments, a support is further included, and the support is provided on one side of the bottom plate; the support is used to place the precast beam.
[0026] In the technical solution, when the precast beam needs to be removed, the precast beam can be moved to the support, the precast beam is lifted by the jacks, after the base is withdrawn, the precast beam is lowered to the support by the jacks. The sliding device can be manually disassembled, which is convenient for subsequent construction.
[0027] In some of these embodiments, a cage is provided between the rolling elements to ensure that the distance between two adjacent rolling elements remains unchanged.
[0028] In the technical solution, through this design, it is avoided that any two adjacent rolling elements are in contact with each other when the support plate moves, resulting in inability to roll. Ensure the smoothness and stability during the construction process.
[0029] In some of these embodiments, the distance between any two adjacent rolling elements is equal.
[0030] In the technical solution, ensure the smoothness of the support plate during the movement process.
[0031] Based on the above technical solution, in the embodiment of the present utility model, when the support plate is pushed, the support plate above the rolling elements applies a force to the rolling elements, and the rolling elements roll forward in the first receiving groove. At this time, the rolling elements simultaneously generate rolling friction with the bottom plate and the support plate. As the rolling elements roll, the rolling elements at the rear gradually disengage from the support plate, and the rolling elements in the forward direction sequentially contact the support plate, realizing continuous mobile transportation. In this solution, large-weight precast beams can be transported smoothly. And the cost is low, and the required manpower is also small. Brief Description of the Drawings
[0032] The drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:
[0033] Figure 1 is a schematic diagram of the overall structure of an embodiment of the highway precast beam sliding device of the present utility model;
[0034] Figure 2 is a front view of an embodiment of the highway precast beam sliding device of the present utility model;
[0035] Figure 3 is a top view of an embodiment of the highway precast beam sliding device of the present utility model;
[0036] Figure 4 is a schematic diagram of the overall structure of an embodiment of the highway precast beam sliding device of the present utility model;
[0037] Figure 5 is a schematic diagram of the overall structure of an embodiment of the highway precast beam sliding device of the present utility model;
[0038] Figure 6 is a top view of an embodiment of the highway precast beam sliding device of the present utility model.
[0039] In the figure:
[0040] 100, bottom plate; 200, rolling element; 300, support plate; 400, base; 500, precast beam; 600, pedestal; 700, first hydraulic cylinder; 800, sliding seat; 900, second hydraulic cylinder; 110, clamping member; 120, clamping groove; 130, jack; 140, support. Detailed Description of the Embodiments
[0041] Next, the technical solutions in the embodiments will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0042] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0043] The terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features.
[0044] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0045] Please refer to all the drawings. In a schematic embodiment of the slip device for a highway precast beam 500 of the present utility model, the slip device for the highway precast beam 500 includes: a bottom plate 100, rolling elements 200, a support plate 300, a base 400, and a pushing assembly; wherein, a first receiving groove is formed on the upper surface of the bottom plate 100 along its length direction. The rolling elements 200 are cylindrical, and the rolling elements 200 are arranged at intervals in the first receiving groove along the length direction of the bottom plate 100; each of the rolling elements 200 is parallel to each other. A second receiving groove parallel to the first receiving groove is formed on the lower surface of the support plate 300; the support plate 300 is placed above the rolling elements 200, and the second receiving groove is used to receive the rolling elements 200. The upper part of the base 400 is used to place the precast beam 500. The pushing assembly is used to push the support plate 300. When the support plate 300 drives the precast beam 500 to move, the rolling elements 200 roll.
[0046] Through the above solution, when pushing the support plate 300, the support plate 300 above the rolling element 200 applies a force to the rolling element 200, and the rolling element 200 rolls forward in the first receiving groove. At this time, the rolling element 200 generates rolling friction with both the bottom plate 100 and the support plate 300 simultaneously. As the rolling element 200 rolls, the rear rolling element 200 gradually disengages from the support plate 300, and the rolling element 200 in the forward direction sequentially contacts the support plate 300, achieving continuous mobile transportation. In this solution, it is possible to transport precast beams 500 with large weights smoothly. And the cost is relatively low, and the required labor is also less.
[0047] In some embodiments, the bottom plate 100 is a rectangular plate and is laid flat on the ground.
[0048] In some embodiments, the length direction of the first receiving groove is the same as the length direction of the bottom plate 100.
[0049] In some embodiments, the first receiving groove penetrates through both ends of the bottom plate 100 in the length direction. This facilitates placing the rolling element 200 into the first receiving groove.
[0050] In some embodiments, the width of the first receiving groove is not less than the length of the rolling element 200.
[0051] In some embodiments, the support plate 300 is a rectangular plate.
[0052] In some embodiments, the second receiving groove penetrates through the corresponding two sides of the support plate 300 along its length direction.
[0053] In some embodiments, the rolling element 200 can be made of metal.
[0054] In some embodiments, the rolling element 200 can be made of steel. It has high structural strength and strong load-bearing capacity.
[0055] In some embodiments, the rolling element 200 can be made of log. It is convenient for obtaining materials.
[0056] In some embodiments, the pushing assembly is a chain block. By pulling the support plate 300 with the chain block, the chain block has a low cost, is convenient to carry, and does not require additional equipment support. And it is convenient for manual adjustment during the pulling process.
[0057] Further, the chain block is arranged in the forward direction of the precast beam 500. One end of the chain block can be fixed to a fixed object such as the ground or a mountain body, and the other end can be connected to the support plate 300.
[0058] In some other embodiments, the chain block can also be directly connected to the precast beam 500.
[0059] In some embodiments, the number of chain hoists can be multiple, and multiple personnel can manually operate them simultaneously to ensure consistent pace, thereby realizing the pulling of the support plate 300 and the precast beam 500.
[0060] In some embodiments, the pushing assembly includes a base 600 and a first hydraulic cylinder 700. Among them, the base 600 is arranged at one end of the length direction of the bottom plate 100. The two ends of the first hydraulic cylinder 700 are respectively connected to the base 600 and the support plate 300. By means of the first hydraulic cylinder 700, the movement of the support plate 300 and the precast beam 500 can be realized. The pushing is stable and fast, and does not require multiple people to operate simultaneously.
[0061] In some embodiments, the base 600 can be arranged on the side of the support plate 300 away from the direction in which it needs to move. By pushing the support plate 300 with the first hydraulic cylinder 700, the movement of the support plate 300 and the precast beam 500 can be realized.
[0062] In some embodiments, the base 600 can be directly fixed to a fixed object such as the ground or a mountain.
[0063] In some embodiments, the base 600 can be fixed on the bottom plate 100.
[0064] In some embodiments, the number of the first hydraulic cylinders 700 can be multiple.
[0065] In some embodiments, the length direction of the first hydraulic cylinder 700 is the same as the length direction of the bottom plate 100.
[0066] In some embodiments, the cylinder body of the first hydraulic cylinder 700 is connected to the base 600, and the output end can be connected to the support plate 300 or the precast beam 500.
[0067] In some embodiments, the cylinder body of the first hydraulic cylinder 700 is connected to the support plate 300 or the precast beam 500, and the output end can be connected to the base 600.
[0068] In some embodiments, the pushing assembly includes a sliding seat 800 and a second hydraulic cylinder 900. Among them, the sliding seat 800 is used to be arranged above the rolling elements 200. A connecting piece is arranged on the sliding seat 800 for connecting with the bottom plate 100. The two ends of the second hydraulic cylinder 900 are respectively connected to the sliding seat 800 and the support plate 300. If the distance that the precast beam 500 needs to move is too long and exceeds the maximum stroke of the hydraulic cylinder, the above scheme can be adopted. In the above scheme, after connecting the sliding seat 800 with the bottom plate 100, when the second hydraulic cylinder 900 is used to push the support plate 300 and the precast beam 500 to move, after the second hydraulic cylinder 900 retracts, move the sliding seat 800 close to the support plate 300, and then fix the sliding seat 800 to the bottom plate 100 and repeat the above actions to realize the long-distance movement of the precast beam 500.
[0069] In some embodiments, the number of the second hydraulic cylinders 900 may be multiple.
[0070] In some embodiments, the longitudinal direction of the second hydraulic cylinder 900 is the same as the longitudinal direction of the bottom plate 100.
[0071] In some embodiments, the cylinder block of the second hydraulic cylinder 900 is connected to the sliding seat 800, and the output end may be connected to the support plate 300 or the precast beam 500.
[0072] In some embodiments, the cylinder block of the second hydraulic cylinder 900 is connected to the support plate 300 or the precast beam 500, and the output end may be connected to the sliding seat 800.
[0073] In some embodiments, the sliding seat 800 is in the shape of a rectangular plate and can be placed on the rolling elements 200. Since the weight of the sliding seat 800 is relatively low, it can be dragged manually.
[0074] In some embodiments, the sliding seat 800 may also be placed on the bottom plate 100.
[0075] In some embodiments, the sliding seat 800 may be slidably connected to the bottom plate 100.
[0076] In some embodiments, a chain block may also be provided on the sliding seat 800. When the weight of the sliding seat 800 is relatively large, it can be pulled by the chain block.
[0077] In some embodiments, the connecting member includes a clamping member 110, and a plurality of first clamping grooves 120 are arranged on the bottom plate 100 along its longitudinal direction; the clamping member 110 is used to connect with the corresponding first clamping groove 120 to realize the fixation of the sliding seat 800 and the bottom plate 100. By inserting the clamping member 110 into the first clamping groove 120, the sliding seat 800 and the bottom plate 100 can be fixed, avoiding displacement between the bottom plate 100 and the sliding seat 800 when the second hydraulic cylinder 900 works. The stability during construction is ensured.
[0078] In some embodiments, the clamping member 110 may be directly hinged to the sliding seat 800. By flipping the clamping member 110, it can be clamped to the corresponding first clamping groove 120 or separated from the first clamping groove 120.
[0079] In some embodiments, a second clamping groove 120 may be formed on the sliding seat 800. The clamping member 110 is separately provided from the sliding seat 800. When it is necessary to connect the sliding seat 800 and the bottom plate 100, the second clamping groove 120 is aligned with the corresponding first clamping groove 120, and the clamping member 110 is placed in the corresponding second clamping groove 120 and first clamping groove 120 to realize the connection.
[0080] In some embodiments, to improve the structural strength, the number of the card members 110 can be multiple.
[0081] In some embodiments, the connecting member can also be a bolt, and the sliding seat 800 is connected to the bottom plate 100 through the bolt.
[0082] In some embodiments, the connecting member can also be a dowel pin, and the sliding seat 800 is connected to the bottom plate 100 through the dowel pin.
[0083] In some embodiments, a third receiving groove is formed on the lower surface of the sliding seat 800 for receiving the rolling elements 200. When the sliding seat 800 moves, the rolling elements 200 are held in the third receiving groove, and both ends of the rolling elements 200 will contact the inner wall of the third receiving groove to achieve position limitation, so as to prevent the sliding seat 800 from shifting when moving.
[0084] In some embodiments, jacks 130 are provided on both sides of the base 400, and the jacks 130 are used to support the precast beam 500. When placing the precast beam 500 on the base 400 or removing the precast beam 500 from the base 400, the precast beam 500 can be lifted by the jacks 130, which is convenient for hoisting or other equipment operation.
[0085] In some embodiments, a bearing 140 is further included, and the bearing 140 is arranged on one side of the bottom plate 100; the bearing 140 is used to place the precast beam 500. When it is necessary to remove the precast beam 500, the precast beam 500 can be moved to the bearing 140, the precast beam 500 is lifted by the jack 130, after the base 400 is withdrawn, the precast beam 500 is lowered onto the bearing 140 by the jack 130. The sliding device can be manually disassembled, which is convenient for subsequent construction.
[0086] In some embodiments, there are two bearings 140, which are respectively arranged on both sides in the width direction of the bottom plate 100.
[0087] In some embodiments, a cage is arranged between the rolling elements 200 to ensure that the distance between the two rolling elements 200 remains unchanged. With this design, it is avoided that any two adjacent rolling elements 200 are in contact with each other and cannot roll when the support plate 300 moves. The smoothness and stability during the construction process are ensured.
[0088] In some embodiments, the distance between any two adjacent rolling elements 200 is equal, ensuring the smoothness of the support plate 300 during the moving process.
[0089] Through the description of multiple embodiments of the highway precast beam 500 sliding device of the present invention, it can be seen that the embodiments of the highway precast beam 500 sliding device of the present invention have at least one or more of the following advantages:
[0090] 1. When pushing the support plate 300, the support plate 300 above the rolling elements 200 applies a force to the rolling elements 200. The rolling elements 200 roll forward in the first receiving groove. At this time, the rolling elements 200 simultaneously generate rolling friction with the bottom plate 100 and the support plate 300. As the rolling elements 200 roll, the rear rolling elements 200 gradually disengage from the support plate 300, and the rolling elements 200 in the forward direction sequentially contact the support plate 300, achieving continuous mobile transportation. In this solution, it is possible to stably transport precast beams 500 with a large weight. And the cost is relatively low, and less manpower is required;
[0091] 2. The moving seat is used to be arranged above the rolling elements 200; a connecting piece is arranged on the sliding seat 800 for connecting with the bottom plate 100; both ends of the second hydraulic cylinder 900 are respectively connected to the sliding seat 800 and the support plate 300. If the distance that the precast beam 500 needs to move is too long and exceeds the maximum stroke of the hydraulic cylinder, the above solution can be adopted. In the above solution, after connecting the sliding seat 800 to the bottom plate 100, the support plate 300 and the precast beam 500 are pushed to move by the second hydraulic cylinder 900. After the second hydraulic cylinder 900 retracts, the sliding seat 800 is moved close to the support plate 300, and then the sliding seat 800 is fixed to the bottom plate 100 and the above actions are repeated to achieve the long-distance movement of the precast beam 500.
[0092] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and the key points of each embodiment are the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.
[0093] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.
Claims
1. A highway prefabricated beam sliding device, characterized in that: include: A bottom plate; a first receiving groove is formed on the upper surface of the bottom plate along its length direction; Rolling bodies, the rolling bodies are cylindrical, and the rolling bodies are arranged in the first receiving groove at intervals along the length direction of the bottom plate; the rolling bodies are parallel to each other; A support plate, wherein a second receiving groove parallel to the first receiving groove is formed on the lower surface of the support plate; the support plate is placed above the rolling body, and the second receiving groove is used to receive the rolling body; A base, the top of which is used to place the prefabricated beam; A pushing component, the pushing component is used to push the supporting plate; When the support plate drives the precast beam to move, the rolling body rolls.
2. The highway prefabricated beam sliding device according to claim 1, characterized in that: The pushing component is a hand chain hoist.
3. The highway prefabricated beam sliding device according to claim 1, characterized in that: The pushing assembly includes a base and a first hydraulic cylinder; wherein the base is arranged at one end of the bottom plate in the length direction; and two ends of the first hydraulic cylinder are respectively connected to the base and the support plate.
4. The highway prefabricated beam sliding device according to claim 1, characterized in that: The pushing assembly includes a sliding seat and a second hydraulic cylinder; wherein the sliding seat is used to be arranged above the rolling body; a connecting piece is arranged on the sliding seat for connecting with the bottom plate; and two ends of the second hydraulic cylinder are respectively connected to the sliding seat and the support plate.
5. The highway prefabricated beam sliding device according to claim 4, characterized in that: The connecting member includes a clamping member, and a plurality of first clamping grooves are arranged on the bottom plate along its length direction; the clamping member is used to connect with the corresponding first clamping grooves to achieve the fixation of the sliding seat and the bottom plate.
6. The highway prefabricated beam sliding device according to claim 4, characterized in that: A third accommodating groove is formed on the lower surface of the sliding seat, and the third accommodating groove is used to accommodate the rolling body.
7. The highway prefabricated beam sliding device according to claim 1, characterized in that: Jacks are arranged on both sides of the base, and the jacks are used to support the prefabricated beams.
8. The highway prefabricated beam sliding device according to claim 7, characterized in that: It also includes a support, which is arranged on one side of the base plate; the support is used to place the prefabricated beam.
9. The highway prefabricated beam sliding device according to claim 1, characterized in that: A retaining frame is arranged between the rolling elements to ensure that the distance between the two rolling elements remains unchanged.
10. The highway prefabricated beam sliding device according to claim 9, characterized in that: The distance between any two adjacent rolling elements is equal.