Temporary support pad for abutment replacement

Abstract

The utility model relates to a kind of temporary support cushion for support replacement, belong to bridge construction technical field.The temporary support cushion includes box, lower sliding block, upper sliding block and control assembly;Box has the adjusting cavity of top opening, lower sliding block is slidably arranged in adjusting cavity, upper sliding block is set in adjusting cavity and is located above lower sliding block, the contact surface of lower sliding block and upper sliding block is inclined plane;Control assembly includes screw thread cooperation's rocking handle and bolt sleeve, one end of rocking handle is rotatably connected with lower sliding block, bolt sleeve is fixed in box.The temporary support cushion for support replacement provided by the utility model, staff can make lower sliding block slide in adjusting cavity by rotating rocking handle, to drive upper sliding block to lift, so that the height of the top surface of upper sliding block changes, so that it is in contact with the beam bottom of main girder, can adapt to different height, easy and convenient to operate.

Description

Technical Field

[0001] This utility model belongs to the field of bridge construction technology, and specifically relates to a temporary support pad for bearing replacement. Background Technology

[0002] Bridge bearings are used to connect the upper and lower structures of a bridge. They are mainly used to transfer the load of the upper part of the bridge to the bridge piers and abutments. At the same time, they need to ensure the free deformation of the upper part under the action of load, temperature change, concrete shrinkage and creep, etc., so as to protect the beam ends, pier cap beams and other structures from damage.

[0003] During the long-term use of bridges, bridge bearings may deform or fail, therefore, it is necessary to regularly inspect and replace bridge bearings.

[0004] In bridge bearing replacement projects, temporary support pads (also known as support blocks or jack support pads) are temporary structures used to temporarily replace the original bearings and bear and transfer the loads of the bridge superstructure. These temporary support pads are the "lifeline" of the entire replacement process. After the bridge bearing replacement is completed, the temporary support pads need to be removed.

[0005] Patent application CN2023107592748 discloses a temporary support structure for replacing bridge bearings. Paragraph 0043 of its specification clearly states that the auxiliary support device includes support blocks and support beams distributed sequentially from top to bottom. Support blocks and support beams of appropriate height are fabricated according to the distance between the bridge pier and the main beam for temporary auxiliary support. Therefore, it is evident that the temporary support structures in the prior art have a relatively uniform height and cannot be applied to operating spaces of varying heights. Utility Model Content

[0006] Therefore, the purpose of this utility model is to provide a temporary support pad for support replacement, which can effectively improve the above-mentioned problems.

[0007] The technical solution of this utility model is as follows: This utility model provides a temporary support pad for support replacement, including a housing, a lower slider, an upper slider, and a control assembly; the housing has an adjustment cavity with an opening at the top, the lower slider is slidably disposed in the adjustment cavity, and the upper slider is vertically and vertically disposed in the adjustment cavity and located above the lower slider, the contact surface between the lower slider and the upper slider is an inclined surface; the control assembly includes a threaded crank handle and a bolt sleeve, one end of the crank handle is rotatably connected to the lower slider, and the bolt sleeve is fixed to the housing.

[0008] As an optional solution, the side wall of the housing is provided with an upward-facing mounting notch, the crank handle is inserted into the mounting notch through the opening of the mounting notch, and the bolt sleeve is fixed to the housing.

[0009] As an optional solution, the control component also includes a limiting member, the lower slider is provided with a stepped hole, and one end of the crank handle is inserted into the stepped hole and limited by the limiting member.

[0010] As an optional solution, the crank handle includes a handle, a rod, and a connector, wherein the handle is Z-shaped and connected to the rod via the connector.

[0011] As an optional solution, the connector is cylindrical, and one end of both the handle and the rod is inserted into and fixed within the connector.

[0012] As an optional solution, the adjustment cavity and the lower slider are respectively provided with a first strip-shaped protrusion and a first strip-shaped groove that are slidably engaged, and the lower slider and the upper slider are respectively provided with a second strip-shaped protrusion and a second strip-shaped groove that are slidably engaged.

[0013] As an optional solution, the connector is fixedly connected to the rod body, and one end of the handle is slidably inserted into the connector and has two extreme positions. When the handle is in different extreme positions, the handle can drive the rod body to rotate in different directions in one direction.

[0014] As an optional solution, the handle is provided with a first ratchet disc and a second ratchet disc that are opposite in direction of rotation, and the connector is provided with a corresponding third ratchet disc and a fourth ratchet disc. When the handle is moved, the first ratchet disc and the third ratchet disc can be engaged, or the second ratchet disc and the fourth ratchet disc can be engaged.

[0015] As an optional solution, the connector includes a connecting sleeve, a first connector and a second connector, both of which are provided with stepped shafts, which are inserted into the connecting sleeve.

[0016] As an optional solution, the first ratchet disk, the second ratchet disk, the third ratchet disk, and the fourth ratchet disk are all provided with ratchet teeth, and the cross-section of the ratchet teeth is wedge-shaped.

[0017] The beneficial effects of this utility model are: The temporary support pad provided by this utility model for bearing replacement allows the lower slider to slide within the adjustment cavity by turning the handle, thereby driving the upper slider to rise and fall. This changes the height of the top surface of the upper slider, allowing it to abut against the bottom of the main beam. It can adapt to different heights and is simple and convenient to operate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The above and other objects, features, and advantages of this utility model will become clearer through the drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not intentionally drawn to scale to actual dimensions; the focus is on illustrating the main idea of ​​this utility model.

[0019] Figure 1 Schematic diagram of the structure of the temporary support pad provided in Embodiment 1 of this utility model Figure 1 ; Figure 2 Schematic diagram of the structure of the temporary support pad provided in Embodiment 1 of this utility model Figure 2 ; Figure 3 for Figure 2 AA section view; Figure 4 A partial structural diagram (without a box) of the temporary support pad provided in Embodiment 1 of this utility model; Figure 5 A schematic diagram of the structure of the box body for the temporary support pad provided in Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the lower slider of the temporary support pad provided in Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of the upper slider of the temporary support pad provided in Embodiment 1 of this utility model; Figure 8 This is a schematic diagram of the structure of the control assembly for the temporary support pad provided in Embodiment 1 of this utility model; Figure 9 Schematic diagram of the control component for the temporary support pad provided in Embodiment 2 of this utility model Figure 1 ; Figure 10 Schematic diagram of the control component for the temporary support pad provided in Embodiment 2 of this utility model Figure 2 ; Figure 11 for Figure 10 BB cross-sectional view; Figure 12 A schematic diagram of a partial structure (handle, first connector and second connector) of the control component of the temporary support pad provided in Embodiment 2 of this utility model.

[0020] Icons: 10-Temporary support pad; 11-Box body; 12-Lower slider; 13-Upper slider; 14-Control component; 110-Adjustment cavity; 111-Mounting notch; 112-First strip protrusion; 120-Stepped hole; 121-First strip groove; 122-Second strip groove; 130-Second strip protrusion; 140-Handle; 141-Bolt sleeve; 142-Limiting component; 150-Handle; 151-Bar body; 152-Connector; 153-Limiting part; 154-First ratchet disc; 155-Second ratchet disc; 160-Connecting sleeve; 161-First connector; 162-Second connector; 163-Third ratchet disc; 164-Fourth ratchet disc. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of 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 some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0025] Example 1: Please refer to Figures 1-4 As shown, Embodiment 1 of this utility model provides a temporary support pad 10. The temporary support pad 10 is mainly used to temporarily replace the original bridge bearing when replacing the bridge bearing, and to bear and transfer the load of the bridge superstructure. It can play the role of temporary support, so as to facilitate the replacement of the bridge bearing by the staff.

[0026] The temporary support pad 10 mainly consists of a box 11, an upper slider 13, a lower slider 12, and a control component 14. The upper slider 13 and the lower slider 12 are both located inside the box 11. The control component 14 is used to control the movement of the lower slider 12 inside the box 11. The lower slider 12 can push the upper slider 13 up and down, thereby enabling the upper slider 13 to provide jacking support for the bridge.

[0027] The following section will discuss in detail the various components of the temporary support block 10.

[0028] The structure of box 11 is not limited; please refer to the following: Figure 5 As shown, the housing 11 has an adjustment cavity 110 with an opening at the top. The housing 11 can be a rectangular housing 11, a cylindrical housing 11, a prismatic housing 11, etc. In this embodiment, the housing 11 adopts a rectangular housing 11 structure. The housing 11 is mainly composed of a bottom plate and four side plates. The four side plates are arranged around the top side of the bottom plate. The bottom plate and the four side plates together form an adjustment cavity 110 with a rectangular cross-section and an opening at the top. The bottom plate and the side plates can both be steel plates or other metal plates, or rigid non-metallic plates. The connection method between the bottom plate and the side plates is not limited. For example, the bottom plate and the side plates can be integrally formed, or they can be connected and fixed by welding or other methods.

[0029] In other embodiments, the number of side panels may be three, five, or one side of the housing 11 may have an opening.

[0030] The lower slider 12 is located within the adjustment cavity 110. The structure of the lower slider 12 is not limited; for example, the lower slider 12 can be prismatic or irregular in shape. In this embodiment, please refer to... Figure 6 As shown, the lower slider 12 is a quadrangular prism. The bottom side of the lower slider 12 is a plane and is used to fit against the inner bottom side of the adjustment cavity 110. The top side of the lower slider 12 is a first slope, which is inclined.

[0031] Furthermore, the lower slider 12 and the adjustment cavity 110 are in sliding engagement, meaning the lower slider 12 can slide left and right relative to the adjustment cavity 110. The sliding engagement between the lower slider 12 and the adjustment cavity 110 is not limited. For example, in this embodiment, a first strip-shaped protrusion 112 and a first strip-shaped groove 121 are correspondingly provided between the inner bottom side of the adjustment cavity 110 and the bottom side of the lower slider 12. The first strip-shaped protrusion 112 is slidably embedded in the first strip-shaped groove 121. Both the first strip-shaped protrusion 112 and the first strip-shaped groove 121 are elongated. The first strip-shaped protrusion 112 is located on the inner bottom side of the adjustment cavity 110, and the first strip-shaped groove 121 is located on the bottom side of the lower slider 12, or the first strip-shaped protrusion 112 is located on the bottom side of the lower slider 12, and the first strip-shaped groove 121 is located on the inner bottom side of the adjustment cavity 110. The length direction of the first strip-shaped protrusion 112 and the first strip-shaped groove 121 is the sliding direction of the lower slider 12 relative to the adjustment cavity 110.

[0032] In other embodiments, the lower slider 12 and the adjustment cavity 110 may also adopt other sliding engagement methods. For example, the width of the adjustment cavity 110 and the width of the lower slider 12 are equal or approximately equal, the length of the adjustment cavity 110 is greater than the length of the lower slider 12, and the lower slider 12 can slide left and right relative to the adjustment cavity 110 along the length direction of the adjustment cavity 110.

[0033] The upper slider 13 is also located within the adjustment cavity 110. The upper slider 13 can rise or fall along the adjustment cavity 110. The lifting and lowering coordination between the upper slider 13 and the adjustment cavity 110 is not limited. For example, the width of the upper slider 13 is equal to or approximately equal to the width of the adjustment cavity 110, and the length of the upper slider 13 is equal to or approximately equal to the length of the adjustment cavity 110. Under the restriction of the adjustment cavity 110, the upper slider 13 can only rise or fall.

[0034] The upper slider 13 is located above the lower slider 12. The structure of the upper slider 13 is not limited; for example, the upper slider 13 can be prismatic or irregular in shape. In this embodiment, please refer to... Figure 7 As shown, the upper slider 13 is a quadrangular prism. The top side of the upper slider 13 is a plane and is used to fit against the upper bottom surface of the bridge. The bottom side of the upper slider 13 is a second slope, which is inclined relative to the top side of the upper slider 13. The inclination angle of the second slope is the same as that of the first slope, and the second slope fits against the first slope.

[0035] The sliding engagement method of the first and second slopes is not limited. In this embodiment, the lower slider 12 and the upper slider 13 are respectively provided with a first strip-shaped protrusion 112 and a second strip-shaped groove 122. The first strip-shaped protrusion 112 is slidably embedded in the first strip-shaped groove 121. Both the first strip-shaped protrusion 112 and the first strip-shaped groove 121 are elongated. The first strip-shaped protrusion 112 is located on the first slope and the first strip-shaped groove 121 is located on the second slope, or the first strip-shaped protrusion 112 is located on the second slope and the first strip-shaped groove 121 is located on the first slope. The length direction of the first strip-shaped protrusion 112 and the first strip-shaped groove 121 is the sliding direction of the second slope relative to the first slope.

[0036] Therefore, when the lower slider 12 slides left or right relative to the adjustment cavity 110, it can push the upper slider 13 up and down. For example, when the lower slider 12 slides to the right relative to the adjustment cavity 110, it can cause the upper slider 13 to rise; when the lower slider 12 slides to the left relative to the adjustment cavity 110, it can cause the upper slider 13 to fall. Alternatively, when the lower slider 12 slides to the left relative to the adjustment cavity 110, it can cause the upper slider 13 to rise; when the lower slider 12 slides to the right relative to the adjustment cavity 110, it can cause the upper slider 13 to fall. It should be noted that, generally speaking, the lower slider 12 can only slide left or right (or back and forth), and the upper slider 13 can only move up and down. Of course, after meeting this requirement, slight movement or wobbling in other directions is also possible for the lower slider 12 or the upper slider 13.

[0037] When the upper slider 13 rises, a portion of the upper slider 13 can extend out of the adjustment cavity 110 to make contact with the bridge.

[0038] The control component 14 is mainly used to control the sliding of the lower slider 12 within the adjustment cavity 110, thereby causing the upper slider 13 to rise and fall.

[0039] Please combine Figure 8 As shown, the control component 14 mainly consists of a crank handle 140 and a threaded sleeve. The crank handle 140 and the threaded sleeve are threaded together. The threaded sleeve is fixed to the housing 11. One end of the crank handle 140 is rotatably connected to the lower slider 12. The operator can drive the lower slider 12 to slide by rotating the crank handle 140.

[0040] Specifically, the threaded sleeve is cylindrical, and can be round, square, etc. The threaded sleeve has a round hole and an internal thread on its inner surface. The pitch and other parameters of the internal thread are not limited and can be referenced from existing technology.

[0041] The method of fixing the threaded sleeve to the housing 11 is not limited, such as welding, connection by threaded fasteners, etc.

[0042] The crank handle 140 includes a handle 150 and a rod 151. The handle 150 and the rod 151 are connected. The connection method between the two is not limited. For example, the two can be integrally formed or connected and fixed by a connector 152. In this embodiment, the handle 150 and the rod 151 are connected by a connector 152.

[0043] The handle 150 is Z-shaped and includes a first section, a second section and a third section. The axes of the first section and the third section are parallel or substantially parallel. The two ends of the second section are connected to the first section and the third section respectively. The second section can be perpendicular to the first section or the third section, or they can be not perpendicular.

[0044] The rod body 151 is a rod-shaped structure, which can be a round rod, a square rod, or a rod that is partly round and partly square. The rod body 151 is provided with a threaded section, the length of which is unlimited. The threaded section is provided with external threads, and the threaded section and the threaded sleeve are threadedly engaged.

[0045] One end of the rod 151 is inserted into the adjustment cavity 110 and rotatably connected to the lower slider 12. The rotation center line of the rod 151 relative to the lower slider 12 is consistent with the sliding direction of the lower slider 12 relative to the adjustment cavity 110.

[0046] The method of rotatably connecting the rod body 151 and the lower slider 12 is not limited. For example, a threaded hole is also provided on the lower slider 12, and a rotating part matching the threaded hole is provided at one end of the rod body 151. In this embodiment, the method of rotatably connecting the rod body 151 and the lower slider 12 can also adopt the following technical solution: a stepped hole 120 is provided on one side of the lower slider 12, and the control component 14 also includes a limiting member 142. One end of the rod body 151 is inserted into the stepped hole 120 and limited by the limiting member 142.

[0047] Specifically, the stepped hole 120 includes a first hole and a second hole, both of which are circular holes. The inner diameter of the first hole is larger than that of the second hole, and the first hole is located outside the second hole. The limiting member 142 is cylindrical or frustum-shaped, etc., and is embedded in the first hole. The limiting member 142 is fixedly connected to the lower slider 12, and the connection method is not limited, such as welding or connection by threaded fasteners. One end of the rod body 151 passes through the limiting member 142 and has a limiting part 153, which is located in the second hole. The limiting part 153 can be cylindrical, prismatic, or irregular in shape, etc., and the diameter and other dimensions of the limiting part 153 need to be smaller than the inner diameter of the second hole.

[0048] The rod body 151 can rotate relative to the limiting member 142 around its own center line. At this time, the limiting part 153 needs to be able to rotate within the second hole. When the rod body 151 rotates relative to the bolt sleeve 141, the rod body 151 can rotate relative to the limiting member 142, and the limiting part 153 can pull or push the limiting member 142 or the lower slider 12, thereby causing the lower slider 12 to slide.

[0049] The handle 150 and the rod 151 are connected and fixed by a connector 152. The third section of the handle 150 and the center line of the rod 151 can coincide or substantially coincide. When the operator turns the handle 150, the rod 151 can rotate around its own center line.

[0050] The structure of the connector 152 is not limited. For example, the connector 152 includes two mating flanges, one of which is fixedly connected to the third section of the handle 150, and the other flange is connected to one end of the rod 151. The two flanges are connected and fixed by threaded fasteners.

[0051] Because the diameter of the limiting part 153 is relatively large, the bolt sleeve 141 and the limiting member 142 cannot be installed onto the rod body 151 from the limiting part 153. Similarly, the other end of the crank handle 140 is a Z-shaped handle 150, from which the bolt sleeve 141 and the limiting member 142 cannot be installed onto the rod body 151. The handle 150 and the rod body 151 are made as separate structures and connected by a connector 152. The presence of the connector 152 facilitates the installation of the bolt sleeve 141 and the limiting member 142 onto the rod body 151. In other embodiments, the handle 150 and the rod body 151 can also be integrally formed. In this case, it may be necessary to separate the limiting part 153 from the rod body 151, or to install the bolt sleeve 141 and the limiting member 142 onto the rod body 151 and then weld the limiting part 153 to the rod body 151.

[0052] The connection method between the connector 152 and the handle 150 and the rod 151 is not limited, such as welding, connection by threaded fasteners, etc. In this embodiment, the connector 152 adopts a sleeve structure. One end of the handle 150 and one end of the rod 151 are respectively inserted into the connector 152, and then the handle 150 and the connector 152 are welded, and the rod 151 and the connector 152 are welded.

[0053] Furthermore, since most of the crank handle 140 needs to be located outside the housing 11, and a small part needs to be located inside the housing 11 and connected and fixed to the lower slider 12, and the size of the adjustment cavity 110 is limited, it is difficult to weld the limiting member 142 and the like.

[0054] Therefore, in this embodiment, the following improvement is provided: a mounting notch 111 is provided on one side wall of the housing 11, the opening of the mounting notch 111 faces upward, and the shaft 151 of the crank handle 140 can be inserted into the mounting notch 111 through the opening of the mounting notch 111.

[0055] With this setup, the operator can first put the bolt sleeve 141 on the rod body 151 outside the box 11, then insert one end of the rod body 151 into the stepped hole 120 of the lower slider 12, and finally embed the limiting member 142 into the first hole and weld the limiting member 142 to the lower slider 12 for fixation.

[0056] The temporary support pad 10 provided in this embodiment is used as follows: Place multiple temporary support blocks 10 in the corresponding positions; The worker holds the handle 150 and rotates it, causing the rod body 151 to rotate, thereby pulling or pushing the lower slider 12 to slide relative to the adjustment cavity 110, causing the upper slider 13 to rise until the top surface of the upper slider 13 contacts the bottom of the bridge beam or maintains a small gap (such as 2-5mm). Start the PLC synchronous jacking system, and all jacks will synchronously jack the beam at a slow and uniform speed (usually 1-3 mm / min) under computer control; Once the jacking reaches the predetermined height, stop the jacking and lock the jack valve. The worker holds the handle 150 and rotates it, causing the rod body 151 to rotate, thereby pulling or pushing the lower slider 12 to slide relative to the adjustment cavity 110, causing the upper slider 13 to rise until the top surface of the upper slider 13 is pressed against the bottom of the bridge beam. The temporary support pad 10 must be properly stressed, and the stress can be adjusted as needed. Slightly lower the jack to unload the load, ensuring that the load is borne by the temporary support block 10; Remove the old bridge bearings and treat the bearing pad stones; Install new bridge bearings; After the inspection is completed, restart the jack and lift the beam slightly to loosen the temporary support block 10. The worker holds the handle 150 and rotates it, causing the rod body 151 to rotate, thereby pulling or pushing the lower slider 12 to slide relative to the adjustment cavity 110, causing the upper slider 13 to descend and the upper slider 13 to disengage from the bottom of the beam; Remove the temporary support pad 10; The PLC system is used to control all jacks to fall synchronously, slowly, and evenly until the weight of the bridge is completely borne by the new bridge supports. The jacks were completely unloaded and returned to their original positions. The jacks, pump station, oil pipes, monitoring instruments, and scaffolding platforms were then dismantled, and the construction site was cleaned up.

[0057] The above steps can be added, removed, modified, or adjusted in order as needed. The steps other than installing or removing the temporary support pad 10 are common knowledge in the field and can be referred to in the prior art. They are only used here to demonstrate the steps of using the temporary support pad 10.

[0058] Example 2: Example 2 of this utility model provides a temporary support pad 10. The temporary support pad 10 is further improved based on Example 1. The improvement lies in the control method of the control component 14. For other parts not mentioned, please refer to the technical solution in Example 1 or the prior art.

[0059] For specific details, please refer to... Figures 8-12 As shown, the connector 152 is fixedly connected to the rod body 151. The method of fixing the two is not limited, such as welding, interference fit, etc. One end of the handle 150 is slidably inserted into the connector 152. When the handle 150 slides relative to the connector 152, it has two extreme positions, namely the first extreme position and the second extreme position.

[0060] When the handle 150 is in the first and second extreme positions, it can drive the rod 151 to rotate in different directions. For example, when the handle 150 is in the first extreme position, rotating it clockwise will drive the rod 151 and the connecting piece 152 to rotate clockwise, but rotating it counterclockwise will not cause the rod 151 to rotate. When the handle 150 is in the second extreme position, rotating it counterclockwise will drive the rod 151 and the connecting piece 152 to rotate counterclockwise, but rotating it clockwise will not cause the rod 151 to rotate. Here, "clockwise" and "counterclockwise" are only relative, referring to forward and reverse rotation.

[0061] When replacing bridge bearings, the operating space is extremely limited, from Figure 1 As can be seen, when the handle 150 is rotated to the bottom, it is very close to the bottom surface of the housing 11, i.e., the platform such as the bridge's support pad; or when the handle 150 is rotated to the top, it is very close to the top surface of the housing 11 and the bottom of the bridge beam. In these situations, it is difficult for workers to grip and rotate the handle 150. However, with the technical solution of this application, when the handle 150 is close to other planes, it is only necessary to first rotate the handle 150 in reverse to freewheel, and then continue to rotate it in the forward direction to drive the rod body 151 to rotate. This structure makes the temporary support pad 10 more suitable for use in narrow spaces.

[0062] The structure capable of achieving the above functions is not limited. In this embodiment, the following scheme can be referred to, but is not limited to: a first ratchet disc 154 and a second ratchet disc 155 are provided on the handle 150, the first ratchet disc 154 and the second ratchet disc 155 are opposite to each other and rotate in opposite directions, and a third ratchet disc 163 and a fourth ratchet disc 164 are provided in the connector 152, the third ratchet disc 163 and the fourth ratchet disc 164 are opposite to each other and rotate in opposite directions.

[0063] The first ratchet disk 154 and the second ratchet disk 155 are located between the third ratchet disk 163 and the fourth ratchet disk 164, and the first ratchet disk 154 is opposite to and matched with the third ratchet disk 163, and the second ratchet disk 155 and the fourth ratchet disk 164 are opposite to and matched with each other.

[0064] The first ratchet disc 154, the second ratchet disc 155, the third ratchet disc 163, and the fourth ratchet disc 164 each include a number of ratches arranged in a circular array. The cross-section of each ratchet is wedge-shaped, i.e., triangular. The shape of the ratchet can be referred to in the prior art. Its unidirectional driving principle is common knowledge in the field and will not be elaborated here.

[0065] When the handle 150 is in the first extreme position, the first ratchet 154 and the third ratchet 163 can engage, that is, the first ratchet 154 can drive the third ratchet 163 to rotate in one direction, but cannot drive it in the opposite direction; when the handle 150 is in the second extreme position, the second ratchet 155 and the fourth ratchet 164 can engage, that is, the third ratchet 163 can drive the fourth ratchet 164 to rotate in one direction, but cannot drive it in the opposite direction.

[0066] In addition, for ease of assembly, the following schemes may be adopted in this embodiment, but are not limited to: the connector 152 includes a connecting sleeve 160, a first connector 161 and a second connector 162.

[0067] The connecting sleeve 160 is cylindrical, and can be a round or square tube, etc. Both the first connector 161 and the second connector 162 are provided with stepped shafts, which are inserted into the connecting sleeve 160. The connection method between the connecting sleeve 160 and the first connector 161, and between the connecting sleeve 160 and the second connector 162, is not limited, and can include welding, interference fit, or connection via threaded fasteners. Both the first connector 161 and the second connector 162 are provided with through holes to facilitate the insertion of one end of the rod 151 and one end of the handle 150.

[0068] The third ratchet 163 is located at one end of the stepped shaft of the first connector 161, and the fourth ratchet 164 is located at one end of the stepped shaft of the second connector 162.

[0069] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A temporary support pad for bearing replacement, characterized in that, The device includes a housing, a lower slider, an upper slider, and a control assembly. The housing has an adjustment cavity with an opening at the top. The lower slider is slidably disposed within the adjustment cavity, and the upper slider is vertically and vertically disposed within the adjustment cavity and located above the lower slider. The contact surface between the lower slider and the upper slider is an inclined surface. The control assembly includes a threaded crank handle and a bolt sleeve. One end of the crank handle is rotatably connected to the lower slider, and the bolt sleeve is fixed to the housing.

2. The temporary support pad according to claim 1, characterized in that, The side wall of the housing is provided with an upward-facing mounting notch, the crank handle is inserted into the mounting notch through the opening of the mounting notch, and the bolt sleeve is fixed to the housing.

3. The temporary support pad according to claim 2, characterized in that, The control component also includes a limiting member, the lower slider is provided with a stepped hole, and one end of the crank handle is inserted into the stepped hole and limited by the limiting member.

4. The temporary support pad according to claim 1, characterized in that, The crank handle includes a handle, a shaft, and a connector. The handle is Z-shaped and connected to the shaft via the connector.

5. The temporary support pad according to claim 4, characterized in that, The connector is cylindrical, and one end of both the handle and the rod is inserted into and fixed within the connector.

6. The temporary support pad according to claim 1, characterized in that, The adjustment cavity and the lower slider are respectively provided with a first strip-shaped protrusion and a first strip-shaped groove that are slidably engaged, and the lower slider and the upper slider are respectively provided with a second strip-shaped protrusion and a second strip-shaped groove that are slidably engaged.

7. The temporary support pad according to claim 4, characterized in that, The connector is fixedly connected to the rod body. One end of the handle is slidably inserted into the connector and has two extreme positions. When the handle is in different extreme positions, the handle can drive the rod body to rotate in different directions.

8. The temporary support pad according to claim 7, characterized in that, The handle is provided with a first ratchet disc and a second ratchet disc that are opposite in direction of rotation. The connector is provided with a corresponding third ratchet disc and a fourth ratchet disc. When the handle is moved, the first ratchet disc and the third ratchet disc can be engaged, or the second ratchet disc and the fourth ratchet disc can be engaged.

9. The temporary support pad according to claim 8, characterized in that, The connector includes a connecting sleeve, a first connector and a second connector, both of which are provided with stepped shafts, which are inserted into the connecting sleeve.

10. The temporary support pad according to claim 8, characterized in that, The first ratchet disk, the second ratchet disk, the third ratchet disk, and the fourth ratchet disk are all provided with ratchet teeth, and the cross-section of the ratchet teeth is wedge-shaped.

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