Counter-force supporting device for core-penetrating jack

Abstract

The utility model provides a counter-force supporting device for a core-penetrating jack, and belongs to the technical field of bridge construction devices. Comprising a supporting unit of a U-shaped structure, the supporting unit is provided with two oppositely-arranged supporting side walls and a supporting plate connected with the two supporting side walls, the supporting plate is arranged at one ends of the two supporting side walls, the supporting unit is provided with an installation space used for installing a nut, and the supporting plate is provided with a through hole used for threaded steel to penetrate through; in the working process, the supporting unit is buckled on the surface of an object to be fixed, the nut is installed on deformed steel bars limited by the installation space, the center hole jack is installed at the top of the supporting unit and used for tensioning the deformed steel bars so that the nut can be conveniently fixed, and after the nut is installed, the supporting unit can be detached from the deformed steel bars after the center hole jack is detached. The device is mainly used for solving the technical problem of high construction cost caused by the fact that a core-penetrating jack needs to be used as a temporary fixing structure when deformed steel bars are fixed in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction devices, and in particular relates to a reaction force support device for a core-penetrating jack. Background Art

[0002] like Figure 1 As shown, during the bridge construction process, when it is necessary to fix the upper and lower templates together, or to fix the construction platform to the bridge, it is necessary to pass the threaded steel bar 2 through the object to be fixed 1 (template or bridge), and then screw the nut 3 on the threaded steel bar 2 to press the surface of the object to be fixed 1 to achieve the purpose of fixed connection.

[0003] Since the object to be fixed 1 is relatively large in size, it is difficult to tighten the threaded steel bar 2 and stably fix the nut 3 on the tightened threaded steel bar 2 by directly manually screwing the nut 3 after the threaded steel bar 2 passes through the fixed object 1. At present, in order to stably achieve a fixed connection, after the threaded steel bar 2 passes through the object to be fixed 1, a through-core jack is put on the end of the threaded steel bar 2, and the nut 3 is put on the through-core jack. The threaded steel bar 2 is tightened by the through-core jack and then the nut 3 is tightened to achieve a stable fixed connection.

[0004] Once fixed, the through-hole jack cannot be removed because it is stuck between the nut 3 and the object 1 to be fixed, and can only serve as a temporary fixing structure. It will be removed together with the threaded steel bar 2 after the construction is completed. In this way, a large number of through-hole jacks need to be prepared during the construction process, resulting in high construction costs.

[0005] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0006] The utility model aims to provide a reaction force support device for a through-core jack, so as to solve the technical problem that the through-core jack needs to be used as a temporary fixing structure when fixing threaded steel bars, resulting in high construction costs.

[0007] In order to achieve the above-mentioned purpose, the reaction force support device for the core-through jack of the utility model provides the following technical solutions:

[0008] A reaction force support device for a through-core jack comprises a support unit with a U-shaped structure, the support unit having two supporting side walls arranged opposite to each other and a support plate connecting the two supporting side walls, the support plate being arranged at one end of the two supporting side walls for providing reaction force to the through-core jack during the force application process, the support unit having an installation space for installing a nut, and the support plate being provided with a through hole for threaded steel to pass through; when working, the support unit is buckled on the surface of an object to be fixed, the nut is installed on the threaded steel limited by the installation space, the through-core jack is installed on the top of the support unit for tightening the threaded steel to facilitate fixing the nut, and after the nut is installed, the support unit can be removed from the threaded steel after the through-core jack is disassembled.

[0009] As a further optimized technical solution, a pressure plate is provided at the top of the support unit, and a support frame is provided at the bottom of the support unit. The top of the support unit is rotatably connected to the pressure plate, and the bottom is slidably matched with the support frame to realize the axial rotation of the support unit around the threaded steel bar.

[0010] As a further optimized technical solution, the pressure plate has a through hole coaxially arranged with the through hole, a stop sleeve is fixedly arranged in the through hole, the stop sleeve has a channel for threaded steel to pass through, one end of the stop sleeve is fixedly connected to the pressure plate, and the other end is rotatably connected to the through hole, and a supporting rotating assembly is arranged between the pressure plate and the support plate.

[0011] As a further optimized technical solution, a retaining ring is fixedly provided at one end of the stop sleeve passing through the through hole, and the size of the retaining ring is larger than the size of the through hole to limit the support plate on the stop sleeve.

[0012] As a further optimized technical solution, the supporting rotating assembly includes:

[0013] A first connecting plate, wherein the first connecting plate is movably sleeved outside the stop sleeve and is fixedly connected to the top of the support plate;

[0014] A second connecting plate, the second connecting plate is movably sleeved outside the stop sleeve and fixedly connected to the pressure plate, and the second connecting plate is arranged opposite to the first connecting plate;

[0015] The first rolling body is arranged between the first connecting plate and the second connecting plate to ensure smooth sliding fit between the first connecting plate and the second connecting plate.

[0016] As a further optimized technical solution, the first rolling body is movably arranged on the top of the first connecting plate, and a sliding track is arranged on the second connecting plate relative to the first rolling body. When the supporting unit rotates around the axial direction of the threaded steel bar, the first connecting plate and the second connecting plate are slidably matched through the first rolling body.

[0017] As a further optimized technical solution, the first rolling body is spherical in shape, and the cross section of the sliding track is an arc shape that matches the rolling body.

[0018] As a further optimized technical solution, it is characterized in that columnar sliding components are respectively provided at the bottom of the two supporting side walls, the supporting frame is annular in shape, and a ring-shaped groove is provided at the top of the supporting frame, and the bottom end of the columnar sliding component extends into the ring-shaped groove to slide with the supporting frame.

[0019] As a further optimized technical solution, the bottom of the columnar sliding component has a stop step, and the bottom of the corresponding annular groove has a slideway for adapting to the stop step, so that the columnar sliding component is not easily disconnected from the support frame after use.

[0020] As a further optimized technical solution, the side and bottom of the stop step are movably provided with a second rolling body, and the second rolling body is partially arranged on the stop step and partially extends out of the stop step to abut against the inner wall of the slideway.

[0021] Beneficial effect: by setting the support unit, when installing the nut, the support unit is buckled on the surface of the object to be fixed, and the threaded steel bar passes through the through hole, the nut is installed on the threaded steel bar limited by the installation space, and the through-core jack is installed on the top of the support plate. The through-core jack works to tighten the threaded steel bar, and the nut is tightened by screwing it in the installation space. When the nut is installed in place, the through-core jack can be removed, and then the support unit can be removed. That is, by setting the support unit, the through-core jack can be reused, thereby reducing the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0023] Figure 1 It is a connection schematic diagram of an object to be fixed in the prior art;

[0024] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0025] Figure 3 It is a partial cross-sectional structural schematic diagram of an embodiment of the utility model;

[0026] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A

[0027] Figure 5 This is a schematic diagram of the use state of an embodiment of the utility model;

[0028] In the figure: 1. object to be fixed; 2. threaded steel; 3. nut; 4. support unit; 401. support side wall; 402. support plate; 403. installation space; 404. through hole; 5. through-hole jack; 6. pressure plate; 601. through hole; 7. support frame; 701. annular groove; 8. stop sleeve; 801. channel; 9. support rotating assembly; 901. first connecting plate; 902. second connecting plate; 903. first rolling body; 904. sliding track; 10. columnar sliding component; 1001. stop step; 1002. second rolling body. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the protection scope of the present invention.

[0030] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0032] The utility model provides a reaction force support device for a through-core jack. By setting a support unit with a U-shaped structure, when installing a nut, the through-core jack is set on the top of the support unit to stretch the threaded steel bar, and the nut is screwed in the installation space of the support unit, so that the nut can be fixedly connected, and the through-core jack can be disassembled after connection to achieve reuse.

[0033] Example 1

[0034] like Figure 2As shown, the reaction force support device for the through-core jack includes a support unit 4, which is a U-shaped structure composed of two oppositely arranged support side walls 401 and a support plate 402 connecting the two support side walls. The U-shaped structure has an installation space 403 for installing the nut 3. The support plate 402 is arranged at one end of the two support side walls 401 to directly provide a reaction force to the through-core jack 5 during the force application process. A circular through hole 404 is opened on the support plate 402 for the threaded steel bar 2 to pass through.

[0035] During operation, the threaded steel bar 2 passes through the object to be fixed 1, and the nut 3 is screwed on the threaded steel bar 2. Then the opening of the support unit 4 faces one side of the object to be fixed 1 to be buckled on the surface of the object to be fixed 1. At this time, the nut 3 is on the threaded steel bar 2 defined by the installation space 403, and the through-hole jack 5 is installed on the top of the support unit 4. Then the through-hole jack 5 is started to work, and the through-hole jack 5 tightens the threaded steel bar 2. By using a wrench to reach into the installation space 403, the nut 3 is tightened from one side of a supporting side wall 401 to the other side of the supporting side wall 401. When the wrench touches the other supporting side wall 401, the wrench can be lifted up to disengage from the nut 3, and the wrench returns to the starting position of screwing. In this way, the nut 3 is repeatedly screwed until the nut 3 is installed in place. Finally, the through-hole jack 5 and the support unit 4 can be removed from the threaded steel bar 2 in turn.

[0036] It should be noted that, in this embodiment, the threaded steel bar 2 is made of finely rolled threaded steel bar, which has a strong axial tensile strength, thereby ensuring the stability of the connection.

[0037] In order to increase the screwing angle when installing the nut 3, thereby improving the convenience of installing the nut, a pressure plate 6 is installed on the top of the support unit 4, and a support frame 7 is arranged at the bottom of the support unit 4. When installing the nut 3, the top of the support unit 4 is rotatably connected to the pressure plate 6, and the bottom is slidingly matched with the support frame 7 to realize the axial rotation of the support unit 4 around the threaded steel bar 2. In this way, the rotation angle when installing the nut 3 is increased from the space between the two supporting side walls 401 to not being restricted by the two supporting side walls 401. When the wrench touches the other supporting side wall 401, there is no need to remove the wrench, and the supporting side wall 401 can be directly pushed to rotate by the wrench.

[0038] like Figure 2 , Figure 3As shown, the pressure plate 6 has a through hole 601 coaxially arranged with the through hole 404, and a stopper sleeve 8 is fixedly arranged in the through hole 601. The stopper sleeve 8 has a channel 801 for the threaded steel bar 2 to pass through. One end of the stopper sleeve 8 is fixedly connected to the pressure plate 6. In this embodiment, the stopper sleeve 8 and the pressure plate 6 can be fixedly connected by threaded connection, welding or interference fit. The other end of the stopper sleeve 8 is rotatably connected to the through hole 601. Specifically, a stopper ring 802 is fixedly arranged at one end of the stopper sleeve 8 passing through the through hole 404. The size of the stopper ring 802 is larger than the size of the through hole 404, so as to limit the support plate 402 on the stopper sleeve 8, and the connection between the pressure plate 6 and the support plate 402 is realized through the stopper sleeve 8. In order to ensure smooth rotation between the pressure plate 6 and the support plate 402, a support rotation assembly 9 is arranged between the pressure plate 6 and the support plate 402.

[0039] The supporting rotating assembly 9 specifically includes a first connecting plate 901 , a second connecting plate 902 , and a first rolling body 903 .

[0040] The first connecting plate 901 is movably mounted on the outside of the stop sleeve 8 and is fixedly connected to the top of the support plate 402; the second connecting plate 902 is movably mounted on the outside of the stop sleeve 8 and is fixedly connected to the pressure plate 6, and the second connecting plate 902 is arranged opposite to the first connecting plate 901; the first rolling body 903 is movably arranged on the top of the first connecting plate 901, and a sliding track 904 is arranged at the position of the second connecting plate 902 relative to the first rolling body 903. When the support unit 4 rotates axially around the threaded steel bar 2, the first connecting plate 901 and the second connecting plate 902 pass through the first rolling body 903 to ensure smooth sliding cooperation between the first connecting plate 901 and the second connecting plate 902.

[0041] In this embodiment, the first rolling body 903 is spherical in shape, and the cross section of the sliding track 904 is an arc shape that matches the rolling body.

[0042] In other embodiments, the first rolling body 903 may also be in a cylindrical shape or a truncated cone shape.

[0043] like Figure 3 , Figure 4 As shown, the bottoms of the two supporting side walls 401 are respectively fixedly connected with columnar sliding components 10, the supporting frame 7 is annular, and the middle of the supporting frame 7 has a hollow portion with a diameter larger than the nut 3 to prevent the supporting frame 7 from interfering with the installation of the nut 3. The supporting frame 7 is coaxially arranged with the through hole 601 on the pressure plate 6, and the top of the supporting frame 7 has an annular groove 701, and the bottom end of the columnar sliding component 10 extends into the annular groove 701 and slides with the supporting frame 7.

[0044] Specifically, the bottom of the columnar sliding component 10 has a stop step 1001 , and the bottom of the corresponding annular groove 701 has a slideway for adapting to the stop step 1001 , so that the columnar sliding component 10 is not easily disconnected from the support frame 7 after use.

[0045] In order to ensure smooth sliding cooperation between the columnar sliding component 10 and the annular groove 701, a second rolling body 1002 is movably provided on the side and bottom of the stop step 1001. The second rolling body 1002 is partially arranged on the stop step 1001 and partially extends out of the stop step 1001 to abut the inner wall of the slideway.

[0046] The working principle of this utility model:

[0047] like Figure 5 As shown, the threaded steel bar 2 passes through the object to be fixed 1, and the nut 3 is screwed on the threaded steel bar 2, and then the support unit 4 is opened toward the side of the object to be fixed 1 to be buckled on the surface of the object to be fixed 1. At this time, the threaded steel bar 2 passes through the support frame 7 and the channel 801 at the same time, and the nut 3 is on the threaded steel bar 2 limited by the installation space 403. The through-core jack 5 is installed on the top of the pressure plate 6. At this time, the support unit 4 is used to indirectly provide a reaction force to the through-core jack 5 during the force application process, and then the through-core jack 5 is started to work, and the through-core jack 5 tightens the threaded steel bar 2. By using a wrench to reach into the installation space 403, the support unit 4 and the wrench are directly rotated at the same time to tighten the nut 3 until the nut 3 is installed in place. Finally, the through-core jack 5 and the device can be removed from the threaded steel bar 2 in turn.

[0048] It should be understood that the above description is merely exemplary and the embodiments of the present application do not limit this.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A reaction force support device for a core-through jack, characterized in that: The invention comprises a support unit (4) having a U-shaped structure, wherein the support unit (4) has two support side walls (401) arranged opposite to each other and a support plate (402) connecting the two support side walls (401), wherein the support plate (402) is arranged at one end of the two support side walls (401) and is used to provide a reaction force to a through-hole jack (5) during the force application process; the support unit (4) has an installation space (403) for installing a nut (3), and the support plate (402) is provided with a through hole (404) for allowing a threaded steel bar (2) to pass through; when working, the support unit (4) is buckled on the surface of an object to be fixed 1, the nut (3) is installed on the threaded steel bar (2) defined by the installation space (403), and the through-hole jack (5) is installed on the top of the support unit (4) and is used to tighten the threaded steel bar (2) to facilitate the fixing of the nut (3); after the nut (3) is installed, the support unit (4) can be removed from the threaded steel bar (2) after the through-hole jack (5) is removed.

2. The reaction force support device for the core-through jack according to claim 1, characterized in that: The top of the support unit (4) is provided with a pressure plate (6), and the bottom of the support unit (4) is provided with a support frame (7). The top of the support unit (4) is rotatably connected to the pressure plate (6), and the bottom is slidably matched with the support frame (7) to realize the axial rotation of the support unit (4) around the threaded steel bar (2).

3. The reaction force support device for the core-through jack according to claim 2, characterized in that: The pressure plate (6) has a through hole (601) coaxially arranged with the through hole (404), a stop sleeve (8) is fixedly arranged in the through hole (601), and the stop sleeve (8) has a channel (801) for the threaded steel bar (2) to pass through, one end of the stop sleeve (8) is fixedly connected to the pressure plate (6), and the other end is rotatably connected to the through hole (601), and a supporting rotating assembly (9) is arranged between the pressure plate (6) and the support plate (402).

4. The reaction force support device for the core-through jack according to claim 3, characterized in that: A stop ring (802) is fixedly provided at one end of the stop sleeve (8) passing through the through hole (404); the size of the stop ring (802) is larger than the size of the through hole (404) so ​​as to limit the support plate (402) on the stop sleeve (8).

5. The reaction force support device for the core-through jack according to claim 3, characterized in that: The supporting rotating assembly (9) comprises: A first connecting plate (901), the first connecting plate (901) being movably sleeved outside the stop sleeve (8) and fixedly connected to the top of the support plate (402); A second connecting plate (902), the second connecting plate (902) being movably sleeved outside the stop sleeve (8) and fixedly connected to the pressure bearing plate (6), the second connecting plate (902) being arranged opposite to the first connecting plate (901); A first rolling body (903), wherein the first rolling body (903) is arranged between the first connecting plate (901) and the second connecting plate (902) to ensure smooth sliding fit between the first connecting plate (901) and the second connecting plate (902).

6. The reaction force support device for the core-through jack according to claim 5, characterized in that: The first rolling body (903) is movably arranged on the top of the first connecting plate (901), and a sliding track (904) is arranged on the second connecting plate (902) at a position relative to the first rolling body (903). When the supporting unit (4) rotates axially around the threaded steel bar (2), the first connecting plate (901) and the second connecting plate (902) are slidably matched via the first rolling body (903).

7. The reaction force support device for the core-through jack according to claim 6, characterized in that: The first rolling body (903) is spherical in shape, and the cross section of the sliding track (904) is an arc shape that matches the rolling body.

8. The reaction force support device for a core-through jack according to any one of claims 2 to 7, characterized in that: The bottom of the two supporting side walls (401) are respectively provided with a columnar sliding component (10); the supporting frame (7) is annular in shape; the top of the supporting frame (7) has an annular groove (701); the bottom end of the columnar sliding component (10) extends into the annular groove (701) to slide with the supporting frame (7).

9. The reaction force support device for the core-through jack according to claim 8, characterized in that: The bottom of the columnar sliding component (10) has a stop step (1001), and the bottom of the corresponding annular groove (701) has a slideway for fitting the stop step (1001), so that the columnar sliding component (10) is not easily disconnected from the support frame (7) after use.

10. The reaction force support device for the core-through jack according to claim 9, characterized in that: The side and bottom of the stop step (1001) are both movably provided with a second rolling body (1002); the second rolling body (1002) is partially arranged on the stop step (1001) and partially extends out of the stop step (1001) to abut against the inner wall of the slideway.

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