Positioning clamp and building system

Abstract

The utility model relates to the technical field of building construction, in particular to a positioning clamp and a building system.The positioning clamp comprises a first clamping device, a second clamping device, an adjusting device and a locking device; the two ends of a workpiece are clamped through the first clamping device and the second clamping device, the distance between the first clamping device and the second clamping device is adjusted through the adjusting device, the adjusting device is locked through the locking device, and / or the first clamping device and the second clamping device are locked. The device is small in occupied space; repeated use can be achieved, and cost is saved; a quick-disassembly and quick-assembly structure is adopted, so that the assembly efficiency is improved; the first clamping device and the second clamping device can provide sufficient clamping force, and disturbance and stress influence of steel bar connection operation are avoided; through the adjustable arrangement of the adjusting device, the elevation adjustment is more convenient; and a locking device is adopted, so that an anti-loosening function is achieved, and the influence of connection falling caused by vibration under a use working condition and disturbance on the perpendicularity is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a positioning fixture and a building system. Background Art

[0002] In prefabricated buildings, especially in the installation of prefabricated columns, the connection and adjustment of steel bars directly affect the verticality of the prefabricated columns and the quality of the entire building; at the same time, the efficiency of the connection is directly related to the installation efficiency of the prefabricated columns, thus affecting the installation efficiency of the entire building. Therefore, the connection and adjustment of steel bars is the core of the installation of prefabricated columns.

[0003] In the prior art, an adjustment sleeve structure is often used to complete the connection adjustment of the steel bars. The upper and lower parts of the structure are connected by relative movement of the outer sleeve and the inner sleeve, and the outer sleeve squeezes the inner sleeve, thereby holding the steel bars tightly to ensure that the steel bar connection reaches the required connection strength. By rotating the leveling nut to change the distance between the two extruded inner sleeves, the vertical distance between the two steel bars is adjusted, that is, the purpose of leveling is achieved, thereby improving the quality and stability of the steel bar structure. However, this technical solution has the following defects: adjustment is made by means of a corner steel bar sleeve, and an adjustment structure is added on the basis of the sleeve connection structure. The sleeve is a disposable consumable and cannot be reused multiple times. This solution is costly and wastes resources. Utility Model Content

[0004] The utility model provides a positioning fixture and a construction system, which are used to solve the defects of the prior art that the adjusting sleeve structure cannot be reused multiple times, has high cost and wastes resources.

[0005] The utility model provides a positioning fixture, comprising:

[0006] a first clamping device;

[0007] a second clamping device;

[0008] an adjusting device, the adjusting device being connected between the first clamping device and the second clamping device and being used for adjusting the distance between the first clamping device and the second clamping device;

[0009] A locking device, wherein the locking device is disposed on the adjusting device and is used to lock the movement of the adjusting device, and / or the locking device is disposed on the first clamping device and the second clamping device and is used to lock the movement of the first clamping device and the second clamping device.

[0010] According to a positioning fixture provided by the utility model, the first clamping device forms a first clamping structure; the second clamping device forms a second clamping structure;

[0011] The first clamping device also includes:

[0012] A first connecting structure, one end of which is connected to the first clamping structure, and the other end of which is connected to one end of the adjusting device, and driven by the adjusting device to move the first clamping device along a first direction;

[0013] The second clamping device also includes:

[0014] A second connecting structure, one end of which is connected to the second clamping structure, and the other end of which is connected to the other end of the adjusting device, and driven by the adjusting device, the second clamping device moves along the second direction;

[0015] The second direction is opposite to the first direction.

[0016] According to a positioning fixture provided by the utility model, the first connection structure includes: a first adjustment rod, the first adjustment rod is formed with a first thread;

[0017] The second connection structure comprises: a second adjusting rod, the second adjusting rod is formed with a second thread, and the rotation direction of the second thread is opposite to the rotation direction of the first thread;

[0018] The adjusting device comprises: an adjusting nut, which is threadedly connected to the first adjusting rod and the second adjusting rod respectively, and is used to adjust the threads of the first adjusting rod and the second adjusting rod to move closer to or farther away from each other.

[0019] According to a positioning fixture provided by the utility model, the first clamping device also includes:

[0020] a first eccentric structure, wherein the first eccentric structure is eccentrically disposed on the first connecting structure;

[0021] The second clamping device also includes:

[0022] A second eccentric structure, wherein the second eccentric structure is eccentrically arranged on the second connecting structure, and the second eccentric structure is connected to the first eccentric structure so that the first clamping structure and the second clamping structure are concentric.

[0023] According to a positioning fixture provided by the utility model, the first clamping structure includes:

[0024] A first limiting portion, wherein a first clamping surface is provided on the first limiting portion;

[0025] A second limiting portion, the second limiting portion is rotatably connected to the first limiting portion, the second limiting portion is provided with a second clamping surface, and the second clamping surface is arranged opposite to the first clamping surface;

[0026] a first adjusting unit, one end of which is connected to the first limiting portion, and the other end of which is connected to the second limiting portion, for adjusting the distance between the second clamping surface and the first clamping surface;

[0027] The second clamping structure comprises:

[0028] A third limiting portion; the third limiting portion is provided with a third clamping surface;

[0029] a fourth limiting portion, the fourth limiting portion being rotatably connected to the third limiting portion, the fourth limiting portion being provided with a fourth clamping surface, and the fourth clamping surface being arranged opposite to the third clamping surface;

[0030] A second adjusting unit, one end of which is connected to the third limiting portion, and the other end of which is connected to the fourth limiting portion, is used to adjust the distance between the fourth clamping surface and the third clamping surface.

[0031] According to a positioning fixture provided by the utility model, the first adjustment unit includes:

[0032] a first adjusting bolt, one end of which is limited on the second limiting portion by a first pin shaft, and the other end of which passes through the first limiting portion;

[0033] a first adjusting nut, the first adjusting nut being threadedly connected to the first adjusting bolt and being used for adjusting the distance between the first limiting portion and the second limiting portion by rotating the first adjusting nut;

[0034] The second adjusting unit comprises:

[0035] a second adjusting bolt, one end of which is limited on the fourth limiting portion by a second pin shaft, and the other end of which passes through the third limiting portion;

[0036] A second adjusting nut, wherein the second adjusting nut is threadedly connected to the second adjusting bolt and is used for adjusting the distance between the third limiting portion and the fourth limiting portion by rotating the second adjusting nut.

[0037] According to a positioning fixture provided by the utility model, the second limiting portion is further provided with a first through hole, and the fourth limiting portion is further provided with a second through hole;

[0038] The first clamping structure further comprises:

[0039] A first limiting member, which is disposed at the rotational position of the first limiting portion and the second limiting portion, and passes through the first through hole and the first connecting structure in sequence, and is used to limit the axial position and the rotational position of the second limiting portion;

[0040] The second clamping structure further comprises:

[0041] The second limiting member is arranged at the rotational position of the third limiting portion and the fourth limiting portion, and the second limiting member passes through the second through hole and the second connecting structure in sequence, and is used to limit the axial position and the rotational position of the fourth limiting portion.

[0042] According to a positioning fixture provided by the utility model, the locking device includes:

[0043] A first locking member, the first locking member is arranged between the adjusting device and the first clamping device;

[0044] a second locking member, the second locking member being disposed between the adjusting device and the second clamping device;

[0045] The first locking member and the second locking member are used to lock the movement of the adjusting device; and / or the locking device comprises:

[0046] a third locking member, the third locking member being disposed on the first clamping device and being used to lock the movement of the first clamping device;

[0047] A fourth locking member, wherein the fourth locking member is disposed on the second clamping device and is used to lock the movement of the second clamping device.

[0048] According to a positioning fixture provided by the utility model, the first clamping surface, the second clamping surface, the third clamping surface and the fourth clamping surface form a V-shaped or arc-shaped groove structure.

[0049] and / or,

[0050] The first clamping surface, the second clamping surface, the third clamping surface and the fourth clamping surface are formed with a damping body.

[0051] The utility model also provides a building system, which includes the positioning fixture in the embodiment of the utility model.

[0052] The utility model provides a positioning fixture, which includes: a first clamping device, a second clamping device, an adjusting device and a locking device; the first clamping device and the second clamping device are used to clamp the two ends of the workpiece, the adjusting device is used to adjust the distance between the first clamping device and the second clamping device, the locking device is used to lock the adjusting device, and / or the first clamping device and the second clamping device are locked. The utility model provides a positioning fixture, which occupies a small space; can be reused, saving costs; adopts a quick-disassembly and quick-assembly structure to improve assembly efficiency; the first clamping device and the second clamping device can provide sufficient clamping force to avoid disturbance and stress influence of steel bar connection operation; the adjustable setting of the adjusting device makes elevation adjustment more convenient; the locking device is used to have an anti-loosening function to avoid vibration under use conditions causing connection falling off and disturbance affecting verticality.

[0053] Furthermore, the present invention also provides a building system, which has the same advantages as above because it includes the positioning fixture in the above embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0055] Figure 1 It is a structural schematic diagram of a positioning fixture provided in one embodiment of the utility model;

[0056] Figure 2 It is a structural schematic diagram of a positioning fixture provided in one embodiment of the utility model;

[0057] Figure 3 It is a structural schematic diagram of a first clamping device provided in one embodiment of the utility model;

[0058] Figure 4 It is a structural schematic diagram of a second clamping device provided in one embodiment of the utility model;

[0059] Figure 5 It is a longitudinal cross-sectional schematic diagram of a first adjusting rod, a second adjusting rod and an adjusting nut provided in one embodiment of the utility model.

[0060] Reference numerals:

[0061] 100: first clamping device; 101: first pin shaft; 102: first adjusting bolt; 103: first adjusting nut; 104: first limiting portion; 105: second limiting portion; 106: first limiting member; 107: first adjusting rod; 108: first eccentric structure; 200: second clamping device; 201: second pin shaft; 202: second adjusting bolt; 204: third limiting portion; 205: fourth limiting portion; 206: second limiting member; 207: second adjusting rod; 208: first cotter pin; 209: second eccentric structure; 210: second cotter pin; 300: adjusting device; 400: locking device; 401: first locking member; 402: second locking member; 403: third locking member; 404: fourth locking member. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0063] Combine the following Figure 1-Figure 5 The utility model is described as a positioning fixture, which comprises a first clamping device 100 , a second clamping device 200 , an adjusting device 300 and a locking device 400 .

[0064] Among them, the adjusting device 300 is connected between the first clamping device 100 and the second clamping device 200, and is used to adjust the distance between the first clamping device 100 and the second clamping device 200; the locking device 400 is arranged on the adjusting device 300, and is used to lock the movement of the adjusting device 300, and / or the locking device 400 is arranged on the first clamping device 100 and the second clamping device 200, and is used to lock the movement of the first clamping device 100 and the second clamping device 200.

[0065] Specifically, the first clamping device 100 and the second clamping device 200 are respectively used to clamp the workpiece. Taking steel bars as an example, one end of the steel bar is clamped by the first clamping device 100, and the other end of the steel bar is clamped by the second clamping device 200, thereby limiting the relative axial displacement of the steel bar. It is suitable for clamping steel bars of various specifications.

[0066] The adjusting device 300 is disposed between the first clamping device 100 and the second clamping device 200 and is used to adjust the relative position of the first clamping device 100 and the second clamping device 200, so as to adjust the axial spacing of the steel bars clamped by the first clamping device 100 and the second clamping device 200.

[0067] The locking device 400 is used to lock the adjusting device 300, and / or to lock the first clamping device 100 and the second clamping device 200. After the adjusting device 300 is adjusted, the first clamping device 100 and the second clamping device 200 are prevented from loosening by the locking action of the locking device 400, thereby ensuring the axial fixation of the steel bar. Since the relative positions of the first clamping device 100 and the second clamping device 200 are adjusted by the adjusting device 300 in this embodiment, the locking device 400 can lock the adjusting device 300, or can lock the first clamping device 100 and the second clamping device 200, and both can achieve the axial fixation of the steel bar.

[0068] The utility model provides a positioning fixture, wherein the first clamping device 100, the second clamping device 200, the adjusting device 300 and the locking device 400 can adopt a quick-disassembly and quick-assembly structure to improve assembly efficiency.

[0069] The utility model provides a positioning fixture, which includes: a first clamping device 100, a second clamping device 200, an adjusting device 300 and a locking device 400; the first clamping device 100 and the second clamping device 200 are used to clamp the two ends of the workpiece, the adjusting device 300 is used to adjust the spacing between the first clamping device 100 and the second clamping device 200, and the locking device 400 is used to lock the adjusting device 300, and / or the first clamping device 100 and the second clamping device 200 are locked. The utility model provides a positioning fixture, which occupies a small space; can be reused, saves costs; adopts a quick-disassembly and quick-installation structure, improves assembly efficiency; the first clamping device 100 and the second clamping device 200 can provide sufficient clamping force, avoid the disturbance and stress influence of the steel bar connection operation; through the adjustable setting of the adjusting device 300, the elevation adjustment is more convenient; the locking device 400 has an anti-loosening function, avoids the vibration under the use condition causing the connection to fall off and the influence of the disturbance on the verticality.

[0070] In one embodiment of the present invention, the first clamping device 100 is formed with a first clamping structure; the second clamping device 200 is formed with a second clamping structure. Taking a steel bar as an example, one end of the steel bar is clamped by the first clamping structure on the first clamping device 100, and the other end of the steel bar is clamped by the second clamping structure on the second clamping device 200, so as to limit the relative displacement of the steel bar in the axial direction. The first clamping structure and the second clamping structure are suitable for clamping steel bars of various specifications. Specifically, the first clamping structure and the second clamping structure can be adopted as follows: Figure 1 The structure shown in FIG. 1 can also be used as shown in FIG. Figure 2 The structure shown.

[0071] In one embodiment of the present invention, Figure 3 and Figure 4 As shown, the first clamping device 100 further includes: a first connection structure, one end of the first connection structure is connected to the first clamping structure, the other end of the first connection structure is connected to one end of the adjusting device 300, and driven by the adjusting device 300, the first clamping device 100 moves along the first direction; the second clamping device 200 further includes: a second connection structure, one end of the second connection structure is connected to the second clamping structure, the other end of the second connection structure is connected to the other end of the adjusting device 300, and driven by the adjusting device 300, the second clamping device 200 moves along the second direction; wherein the second direction is opposite to the first direction. In this embodiment, the first clamping structure is connected to the adjusting device 300 through the first connection structure, and the second clamping structure is connected to the adjusting device 300 through the second connection structure. Driven by the adjusting device 300, the first clamping structure and the second clamping structure move closer to each other or move away from each other to meet the clamping requirements of steel bars of different lengths.

[0072] In one embodiment of the utility model, the first connection structure includes: a first adjustment rod 107, the first adjustment rod 107 is formed with a first thread; the second connection structure includes: a second adjustment rod 207, the second adjustment rod 207 is formed with a second thread, and the second thread is opposite to the first thread; the adjustment device 300 includes: an adjustment nut, the adjustment nut is threadedly connected to the first adjustment rod 107 and the second adjustment rod 207, respectively, and is used to adjust the first adjustment rod 107 and the second adjustment rod 207 threads to move closer to each other or farther away from each other. In this embodiment, the first adjustment rod 107 and the second adjustment rod 207 are respectively provided with thread structures with opposite directions of rotation, and the first adjustment rod 107 and the second adjustment rod 207 are synchronously moved closer to each other or farther away from each other by rotating the adjustment thread. Specifically, the first adjustment rod 107 and the second adjustment rod 207 are both externally threaded, and the adjustment nut is internally threaded. Therefore, the worker only needs to rotate the nut to realize the movement of the first adjustment rod 107 and the second adjustment rod 207, which is convenient for adjustment. Furthermore, the axial force required for adjusting the nut is large, and the adjusting nut needs to have a self-locking function to prevent it from loosening and sliding off.

[0073] In one embodiment of the present invention, Figure 5As shown, the first clamping device 100 further includes: a first eccentric structure 108, which is eccentrically arranged on the first connecting structure; and the second clamping device 200 further includes: a second eccentric structure 209, which is eccentrically arranged on the second connecting structure, and the second eccentric structure 209 is connected to the first eccentric structure 108, so that the first clamping structure and the second clamping structure are concentric. In this embodiment, by arranging the first eccentric structure 108 on the first connecting structure, arranging the second eccentric structure 209 on the second connecting structure, and connecting the first eccentric structure 108 and the second eccentric structure 209 to each other, the eccentric arrangement is adopted to ensure the concentricity of the steel bars clamped by the first clamping structure and the second clamping structure, and avoid axial deviation of the two ends of the steel bars. Specifically, the first eccentric structure 108 and the second eccentric structure 209 can be in the form of an eccentric hole and an eccentric pin shaft respectively, and the eccentric pin shaft can be adapted to be inserted into the eccentric hole to ensure the concentricity of the steel bars.

[0074] In one embodiment of the utility model, the first clamping structure includes: a first limiting portion 104, a second limiting portion 105 and a first adjusting unit. The first limiting portion 104 is provided with a first clamping surface; the second limiting portion 105 is rotatably connected to the first limiting portion 104, and the second limiting portion 105 is provided with a second clamping surface, and the second clamping surface is arranged opposite to the first clamping surface; one end of the first adjusting unit is connected to the first limiting portion 104, and the other end of the first adjusting unit is connected to the second limiting portion 105, and is used to adjust the distance between the second clamping surface and the first clamping surface. Specifically, the first clamping surface is the inner side surface of the first limiting portion 104, and the second clamping surface is the inner side surface of the second limiting portion 105. The distance between the first clamping surface and the second clamping surface can be adjusted by the first adjusting unit to meet the clamping needs of steel bars of different sizes.

[0075] In one embodiment of the utility model, the second clamping structure includes: a third limit portion 204, a fourth limit portion 205 and a second adjustment unit. Among them, the third limit portion 204 is provided with a third clamping surface; the fourth limit portion 205 is rotatably connected to the third limit portion 204, and the fourth limit portion 205 is provided with a fourth clamping surface, and the fourth clamping surface is arranged opposite to the third clamping surface; one end of the second adjustment unit is connected to the third limit portion 204, and the other end of the second adjustment unit is connected to the fourth limit portion 205, which is used to adjust the distance between the fourth clamping surface and the third clamping surface. In this embodiment, the second clamping structure is the same as the first clamping structure in the above embodiment, and it will not be repeated here. The second clamping structure is different from the first clamping structure only in the clamping position, and can be clamped at both ends of the steel bar respectively, and ensure concentricity.

[0076] In one embodiment of the utility model, the first adjustment unit includes: a first adjustment bolt 102 and a first adjustment nut 103. Among them, one end of the first adjustment bolt 102 is limited on the second limit portion 105 through the first pin shaft 101, and the other end of the first adjustment bolt 102 passes through the first limit portion 104; the first adjustment nut 103 is threadedly connected with the first adjustment bolt 102, and is used to adjust the distance between the first limit portion 104 and the second limit portion 105 by rotating the first adjustment nut 103. Specifically, the first adjustment nut 103 is screwed in from one end of the first adjustment bolt 102 close to the first limit portion 104. During the screwing process of the first adjustment nut 103, the distance between the first limit portion 104 and the second limit portion 105 is adjusted by pressing the outer wall of the first limit portion 104. In this embodiment, the distance between the first limit portion 104 and the second limit portion 105 can be adjusted by adjusting the screwing degree of the first adjustment nut 103, so as to match steel bars of different sizes. The adjustment process is simple and easy to operate.

[0077] In one embodiment of the present invention, the second adjustment unit includes: a second adjustment bolt 202 and a second adjustment nut. One end of the second adjustment bolt 202 is limited on the fourth limiting portion 205 by the second pin shaft 201, and the other end of the second adjustment bolt 202 passes through the third limiting portion 204; the second adjustment nut is threadedly connected to the second adjustment bolt 202, and is used to adjust the distance between the third limiting portion 204 and the fourth limiting portion 205 by rotating the second adjustment nut. In this embodiment, the adjustment method of the distance between the third limiting portion 204 and the fourth limiting portion 205 by the second adjustment unit is the same as the adjustment method of the first adjustment unit in the above embodiment, which will not be repeated here. Further, if Figure 2 In the structure shown, the second pin shaft 201 can be installed to limit position by the first cotter pin 208 to prevent the second pin shaft 201 from loosening; similarly, the first pin shaft 101 can also be provided with a cotter pin for limiting position.

[0078] In one embodiment of the utility model, the second limiting portion 105 is further provided with a first through hole. The first clamping structure also includes: a first limiting member 106, the first limiting member 106 is arranged at the rotational position of the first limiting portion 104 and the second limiting portion 105, and the first limiting member 106 passes through the first through hole and the first connecting structure (i.e., the first adjusting rod 107, the first adjusting rod 107 is also provided with the same through hole structure), and is used to limit the axial position and the rotational position of the second limiting portion 105. In this embodiment, by providing the first through hole on the second limiting portion 105, the first limiting member 106 is passed through the first through hole and the first adjusting rod 107, and the axial position and the rotational position of the second limiting portion 105 are limited relative to the first adjusting rod 107 by the first limiting member 106, so as to ensure that there is no relative movement between the first limiting member 106 and the first adjusting rod 107 in both the axial position and the rotational position. Preferably, the first limiting member 106 can adopt a limiting pin.

[0079] In one embodiment of the present invention, a second through hole is further provided on the fourth limiting portion 205. The second clamping structure also includes: a second limiting member 206, the second limiting member 206 is provided at the rotational position of the third limiting portion 204 and the fourth limiting portion 205, and the second limiting member 206 passes through the second through hole and the second connecting structure (i.e., the second adjusting rod 207, the second adjusting rod 207 is also provided with the same through hole structure) in sequence, and is used to limit the axial position and the rotational position of the fourth limiting portion 205. In this embodiment, the limiting of the fourth limiting portion 205 by the second limiting member 206 is the same as the principle of the first limiting member 106 in the above-mentioned embodiment, which will not be repeated here. Further, as Figure 2 In the structure shown, the second position-limiting member 206 can be installed by the second cotter pin 210 to prevent the second position-limiting member 206 from loosening; similarly, the first position-limiting member 106 can also be provided with a cotter pin for position limiting.

[0080] In one of the embodiments of the present utility model, the locking device 400 includes: a first locking member 401 and a second locking member 402. Among them, the first locking member 401 is arranged between the adjusting device 300 and the first clamping device 100; the second locking member 402 is arranged between the adjusting device 300 and the second clamping device 200; the first locking member 401 and the second locking member 402 are used to lock the movement of the adjusting device 300. In this embodiment, the locking device 400 is composed of the first locking member 401 and the second locking member 402, which are respectively used to axially lock and limit the upper end and the lower end of the adjusting device 300 to prevent the adjusting device 300 from loosening. Specifically, in the above embodiment, the adjusting device 300, the first connecting structure and the second connecting structure adopt a threaded connection method. On this basis, as Figure 1As shown, the first locking member 401 and the second locking member 402 can both be in the form of locking nuts, which are sleeved on the first adjustment rod 107 and the second adjustment rod 207 and are respectively located at two ends of the adjustment nuts.

[0081] In one embodiment of the present utility model, the locking device 400 includes: a third locking member 403 and a fourth locking member 404. The third locking member 403 is arranged on the first clamping device 100, and is used to lock the movement of the first clamping device 100; the fourth locking member 404 is arranged on the second clamping device 200, and is used to lock the movement of the second clamping device 200. In this embodiment, the locking device 400 is composed of the third locking member 403 and the fourth locking member 404, which are respectively used to axially lock and limit the first clamping device 100 and the second clamping device 200 to prevent the clamping devices from loosening. Specifically, in the above embodiments, the first adjusting rod 107 and the second adjusting rod 207 both adopt a threaded structure. On this basis, as Figure 2 As shown, the third locking member 403 and the fourth locking member 404 are both in the form of locking nuts. The locking nut is sleeved on the end of the first adjusting rod 107 away from the second adjusting rod 207, and the locking nut is sleeved on the end of the second adjusting rod 207 away from the first adjusting rod 107.

[0082] It should be understood that the first locking member 401 and the second locking member 402 as well as the third locking member 403 and the fourth locking member 404 in the above embodiment can be used independently or in combination to enhance the locking effect.

[0083] In one embodiment of the utility model, the first clamping surface, the second clamping surface, the third clamping surface and the fourth clamping surface form a V-shaped or arc-shaped groove structure, and / or the first clamping surface, the second clamping surface, the third clamping surface and the fourth clamping surface form a damping body. In this embodiment, the clamping effect on the steel bar is improved by designing the structure of the inner side surface of the first clamping surface, the second clamping surface, the third clamping surface and the fourth clamping surface. In one embodiment, a V-shaped clamping surface is used in combination with a horizontally arranged damping body, and the damping body can be a plurality of rib structures; in one embodiment, an arc-shaped groove structure is used in combination with a vertically arranged damping body, and the damping body can be a plurality of damping strips.

[0084] The utility model also provides a building system, which can be a prefabricated building. The building system includes the positioning fixture in the above embodiment of the utility model.

[0085] The building system provided by the utility model has the same advantages as above because it includes the positioning fixture in the above embodiment of the utility model.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A positioning fixture, characterized in that: include: A first clamping device (100); A second clamping device (200); an adjusting device (300), the adjusting device (300) being connected between the first clamping device (100) and the second clamping device (200) and being used for adjusting the distance between the first clamping device (100) and the second clamping device (200); A locking device (400), wherein the locking device (400) is arranged on the adjusting device (300) and is used to lock the movement of the adjusting device (300), and / or the locking device (400) is arranged on the first clamping device (100) and the second clamping device (200) and is used to lock the movement of the first clamping device (100) and the second clamping device (200).

2. The positioning fixture according to claim 1, characterized in that: The first clamping device (100) is formed with a first clamping structure; the second clamping device (200) is formed with a second clamping structure; The first clamping device (100) further comprises: a first connection structure, one end of which is connected to the first clamping structure, and the other end of which is connected to one end of the adjusting device (300), and driven by the adjusting device (300), the first clamping device (100) moves along a first direction; The second clamping device (200) further comprises: a second connection structure, one end of the second connection structure being connected to the second clamping structure, the other end of the second connection structure being connected to the other end of the adjusting device (300), and driven by the adjusting device (300), so that the second clamping device (200) moves along a second direction; The second direction is opposite to the first direction.

3. The positioning fixture according to claim 2, characterized in that: The first connection structure comprises: a first adjustment rod (107), wherein the first adjustment rod (107) is formed with a first thread; The second connection structure comprises: a second adjusting rod (207), the second adjusting rod (207) being formed with a second thread, and the rotation direction of the second thread is opposite to the rotation direction of the first thread; The adjusting device (300) comprises an adjusting nut, wherein the adjusting nut is threadably connected to the first adjusting rod (107) and the second adjusting rod (207) respectively, and is used to adjust the threads of the first adjusting rod (107) and the second adjusting rod (207) to move closer to or farther from each other.

4. The positioning fixture according to claim 2, characterized in that: The first clamping device (100) further comprises: A first eccentric structure (108), wherein the first eccentric structure (108) is eccentrically arranged on the first connecting structure; The second clamping device (200) further comprises: A second eccentric structure (209), wherein the second eccentric structure (209) is eccentrically arranged on the second connecting structure, and the second eccentric structure (209) is connected to the first eccentric structure (108) so that the first clamping structure and the second clamping structure are concentric.

5. The positioning fixture according to claim 2, characterized in that: The first clamping structure comprises: A first limiting portion (104), wherein the first limiting portion (104) is provided with a first clamping surface; A second limiting portion (105), the second limiting portion (105) being rotatably connected to the first limiting portion (104), the second limiting portion (105) being provided with a second clamping surface, and the second clamping surface being arranged opposite to the first clamping surface; a first adjustment unit, one end of which is connected to the first limiting portion (104), and the other end of which is connected to the second limiting portion (105), for adjusting the distance between the second clamping surface and the first clamping surface; The second clamping structure comprises: A third limiting portion (204); the third limiting portion (204) is provided with a third clamping surface; a fourth limiting portion (205), the fourth limiting portion (205) being rotatably connected to the third limiting portion (204), the fourth limiting portion (205) being provided with a fourth clamping surface, and the fourth clamping surface being arranged opposite to the third clamping surface; A second adjustment unit, one end of the second adjustment unit is connected to the third limiting portion (204), and the other end of the second adjustment unit is connected to the fourth limiting portion (205), and is used to adjust the distance between the fourth clamping surface and the third clamping surface.

6. The positioning fixture according to claim 5, characterized in that: The first adjustment unit comprises: A first adjusting bolt (102), one end of the first adjusting bolt (102) being limited on the second limiting portion (105) through a first pin shaft (101), and the other end of the first adjusting bolt (102) passing through the first limiting portion (104); a first adjusting nut (103), the first adjusting nut (103) being threadedly connected to the first adjusting bolt (102), and being used for adjusting the distance between the first limiting portion (104) and the second limiting portion (105) by rotating the first adjusting nut (103); The second adjusting unit comprises: A second adjusting bolt (202), one end of the second adjusting bolt (202) being limited on the fourth limiting portion (205) through a second pin shaft (201), and the other end of the second adjusting bolt (202) passing through the third limiting portion (204); A second adjusting nut, the second adjusting nut being threadedly connected to the second adjusting bolt (202), and used for adjusting the distance between the third limiting portion (204) and the fourth limiting portion (205) by rotating the second adjusting nut.

7. The positioning fixture according to claim 5, characterized in that: The second limiting portion (105) is further provided with a first through hole, and the fourth limiting portion (205) is further provided with a second through hole; The first clamping structure further comprises: a first limiting member (106), the first limiting member (106) being arranged at the rotational position of the first limiting portion (104) and the second limiting portion (105), and the first limiting member (106) passing through the first through hole and the first connecting structure in sequence, and being used for limiting the axial position and the rotational position of the second limiting portion (105); The second clamping structure further comprises: A second limiting member (206), wherein the second limiting member (206) is arranged at the rotational position of the third limiting portion (204) and the fourth limiting portion (205), and the second limiting member (206) passes through the second through hole and the second connecting structure in sequence, and is used to limit the axial position and the rotational position of the fourth limiting portion (205).

8. The positioning fixture according to claim 1, characterized in that: The locking device (400) comprises: A first locking member (401), wherein the first locking member (401) is disposed between the adjusting device (300) and the first clamping device (100); A second locking member (402), the second locking member (402) being arranged between the adjusting device (300) and the second clamping device (200); The first locking member (401) and the second locking member (402) are used to lock the movement of the adjusting device (300); and / or the locking device (400) comprises: a third locking member (403), the third locking member (403) being arranged on the first clamping device (100) and being used for locking the movement of the first clamping device (100); A fourth locking member (404), wherein the fourth locking member (404) is arranged on the second clamping device (200) and is used to lock the movement of the second clamping device (200).

9. The positioning fixture according to any one of claims 5 to 7, characterized in that: The first clamping surface, the second clamping surface, the third clamping surface and the fourth clamping surface form a V-shaped or arc-shaped groove structure, and / or, The first clamping surface, the second clamping surface, the third clamping surface and the fourth clamping surface are formed with a damping body.

10. A building system, characterized in that: Comprising a positioning fixture as described in any one of claims 1-9.

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