Auxiliary tool for installing bolt in narrow space

Abstract

The utility model discloses an auxiliary tool for installing a bolt in a narrow space. The auxiliary tool comprises a supporting plate, a sliding pressing plate, a sliding rod, a sliding rod one-way locking device, a nut gasket tray and a sliding base. The sliding rod is unidirectionally locked through the sliding rod one-way locking device, and the sliding rod drives the sliding pressing plate to press downwards so as to clamp a to-be-installed plate. The nut and gasket tray is connected to the supporting plate in a sliding mode, and adjustment and locking of the positions of a nut and a gasket are achieved so as to adapt to installation of bolts at different positions on a to-be-installed plate. According to the device, the nut and the gasket are arranged in the groove of the nut and gasket tray, the position is adjusted, the to-be-mounted plate is clamped, and then the wrench is operated by one hand to screw the bolt on the to-be-mounted plate. Subsequently, through one-way unlocking of the sliding rod, the sliding rod drives the sliding pressing plate to slide in the direction away from the supporting plate, and then the device can be separated from the bolt and the to-be-installed plate. The hole guiding device is convenient to operate, wide in application range and capable of improving the quality and efficiency of hole guiding operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolt connection, and in particular relates to an auxiliary tool for installing bolts in a narrow space. Background Art

[0002] When bolts are used to connect two plate-like structures, the constructor needs to press the nut and gasket to the bottom of the threaded hole of the lower plate, and use the wrench to tighten the bolts at the same time, using both hands to complete the operation. During operation, since the nuts and gaskets are relatively small and easy to slip out of the hands, the parts may fall or even be lost. In the high-precision equipment cabin, the falling small parts may affect the operation of the equipment; during installation, some small space installations may be encountered, and the two-handed operation will increase the difficulty of the work and reduce the work efficiency. Summary of the invention

[0003] In order to solve at least one of the above technical problems existing in the prior art, the utility model provides a narrow space bolt installation auxiliary tool.

[0004] The utility model is implemented by the following technical solution: a narrow space bolt installation auxiliary tool, including a support plate, a sliding pressure plate, a slide bar, a slide bar one-way locking device, a nut gasket tray and a slide seat;

[0005] The upper end surface of the nut and gasket tray has a groove for accommodating nuts and gaskets, and the upper end surface of the support plate has a horizontal slide groove, the nut and gasket tray is slidably connected to the horizontal slide groove and can be locked therein, and the support plate is vertically fixed to the bottom side of the slide seat; the sliding pressure plate has a horizontal channel for the bolts to be installed to pass through, and the slide seat has a vertical slide groove, and the sliding pressure plate is perpendicular to the vertical slide groove and slidably connected; one end of the sliding rod is fixed to the upper end surface of the sliding pressure plate, and the sliding rod drives the sliding pressure plate to rise and fall relative to the support plate to clamp or move away from the plate to be installed, and the sliding rod one-way locking device is arranged on the sliding path of the sliding rod. When the sliding rod one-way locking device is in the locking position, the sliding rod can only slide in the direction close to the support plate, and when the sliding one-way locking device is in the unlocking position, the sliding rod can slide in the direction away from the support plate.

[0006] Preferably, the slide bar one-way locking device comprises a slide bar bracket, a slide bar pressure cover, a sliding sleeve, a guide column, a limit wing plate and a spring, and the slide bar bracket and the slide bar pressure cover are provided with arc grooves matching the slide bar on the opposite surfaces, the arc groove of the slide bar bracket is a light groove, the arc groove of the slide bar pressure cover is spaced by an array of arc rings, and semi-annular grooves are formed between adjacent arc rings, and the outer periphery of the slide bar is spaced by an array of semi-annular parts matching the semi-annular groove structure, the semi-annular parts are made of plastic and their diameter gradually increases in the direction away from the support plate, the lower end face of the semi-annular part is located outside the semi-annular groove, and the upper end face of the semi-annular part is located inside the semi-annular groove;

[0007] The slide rod support is fixedly connected to the inner bottom surface of the U-shaped frame, the slide rod pressure cover is slidably connected to the inner side of the U-shaped frame and can be locked on the U-shaped frame, and the U-shaped frame is fixedly connected to the upper part of the slide seat; the side wall of the slide rod pressure cover is provided with a connecting groove inwardly, the guide column is fixed at the center position of the connecting groove, the end of the sliding sleeve close to the sliding pressure cover is provided with a guide groove inwardly, one end of the guide column is movably placed in the guide groove, the spring is placed in the guide groove and the two ends are respectively fixedly connected to the guide column and the groove bottom of the guide groove;

[0008] A strip groove is provided on the U-shaped frame, and the sliding sleeve is slidably connected in the strip groove, and a limiting wing plate is extended outwardly from the bottom end of the sliding sleeve. A locking groove and an unlocking groove are provided on one side of the two ends of the strip groove close to the limiting wing plate, and the shapes of the connecting groove, the locking groove and the unlocking groove match the limiting wing plate; the sliding sleeve is pressed toward one side of the slide bar pressure cover until the limiting wing plate is placed in the connecting groove. At this time, the sliding sleeve can slide along the strip groove, and the sliding bar can be switched between the locking position and the unlocking position. In the normal state, the spring can press the limiting wing plate tightly in the locking groove or the unlocking groove, and the sliding sleeve is locked in the strip groove.

[0009] Preferably, when the limiting wing plate is located in the locking groove, the slide bar bracket and the slide bar pressure cover buckle the slide bar, and the semi-annular groove cooperates with the semi-annular part to realize one-way locking of the slide bar; when the limiting wing plate is located in the unlocking groove, the semi-annular groove separates from the semi-annular part to realize the unlocking of the slide bar.

[0010] Preferably, a gasket groove and a nut groove are sequentially arranged on the nut gasket tray in a direction away from the sliding pressure plate, and a through hole is penetrated through the bottom surface of the nut groove for the passage of the bolts to be installed; a U-shaped slide is fixedly connected to the bottom surface of the nut gasket tray through a vertical plate, and the two inner sides of the U-shaped slide are slidably fitted with the support plate and the position of the U-shaped slide can be fixed by tightening bolts, and the bottom surface of the U-shaped slide has a through hole for the bolts to be installed to pass through.

[0011] Preferably, a rubber pad made of elastic material is bonded to the lower end surface of the sliding pressure plate, and the total thickness of the sliding pressure plate and the rubber pad is less than the thickness of the bolt head of the bolt to be installed, the width of the transverse channel of the sliding pressure plate is greater than the diameter of the virtual circle where the bolt head of the bolt to be installed is located, and the length of the transverse channel of the sliding pressure plate is consistent with the length of the transverse sliding groove of the support plate.

[0012] The device has a simple and compact structure. The slide bar is locked unidirectionally by the slide bar unidirectional locking device, and the slide bar drives the sliding pressure plate to press down to clamp the plate to be installed; the nut gasket tray is slidably connected on the support plate to adjust and lock the position of the nut and gasket to adapt to the installation of bolts at different positions on the plate to be installed; the device only needs to place the nut and gasket in the groove of the nut gasket tray, adjust the position and clamp the plate to be installed, and then tighten the bolt on the plate to be installed by operating the wrench with one hand. Subsequently, by unlocking the slide bar unidirectionally, the slide bar drives the sliding pressure plate to slide in the direction away from the support plate, so as to separate the device from the bolt and the plate to be installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 is a three-dimensional structural diagram of the overall structure of this embodiment (first viewing angle);

[0015] Figure 2 is a three-dimensional structural diagram of the overall structure of this embodiment (second viewing angle);

[0016] Figure 3 is a side view of the overall structure of this embodiment;

[0017] Figure 4 is a three-dimensional structural diagram of the present embodiment when no sliding rod is installed;

[0018] Figure 5 is a top view of the present embodiment when no slide bar is installed;

[0019] Figure 6 is a schematic diagram of the three-dimensional structure of the sliding rod one-way locking device of this embodiment;

[0020] Figure 7 is a perspective view of the slide bar one-way locking device of this embodiment;

[0021] Figure 8 is a perspective view of the sliding sleeve of this embodiment;

[0022] Fig. 9 is a perspective view of the guide post of this embodiment;

[0023] Fig.10 is a front view of the mounting structure of this embodiment;

[0024] Fig.11 is a side view of the mounting structure of this embodiment;

[0025] Fig.12 is a top view of the mounting structure of this embodiment;

[0026] Fig.13 Schematic diagram of the matching relationship between the semi-annular member of the slide bar and the semi-annular groove of the slide bar cover in this embodiment.

[0027] Explanation of the numbers in the figure: 1-support plate; 1.1-horizontal slide groove; 2-sliding pressure plate; 2.1-horizontal channel; 3-slide rod; 3.1-semi-annular member; 4.1-slide rod support seat; 4.11-optical groove; 4.2-slide rod pressure cover; 4.21-semi-annular groove; 4.22-connecting groove; 4.3-sliding sleeve; 4.31-guide groove; 4.4-guide column; 4.5-limiting wing plate; 4.6-spring; 4.7-U-shaped frame; 4.71-strip groove; 4.72-locking groove; 4.73-unlocking groove; 5-nut gasket tray; 5.1-gasket groove; 5.2-nut groove; 6-slide seat; 6.1-vertical slide groove; 7-U-shaped slide plate; 8-tightening bolt; 9-rubber pad; 10-bolt to be installed; 11-plate to be installed. DETAILED DESCRIPTION

[0028] Combined with the drawings in the embodiments of the utility model, the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0030] The utility model provides an embodiment:

[0031] like Figures 1 to 13As shown, a small space bolt installation auxiliary tool comprises a support plate 1, a sliding pressure plate 2, a slide rod 3, a slide rod one-way locking device, a nut gasket tray 5 and a slide seat 6; the upper end surface of the nut gasket tray 5 has a groove for accommodating nuts and gaskets, the upper end surface of the support plate 1 has a horizontal slide groove 1.1, the nut gasket tray 5 is slidably connected to the horizontal slide groove 1.1 and can be locked therein, and the support plate 1 is vertically fixed to the bottom side of the slide seat 6; the sliding pressure plate 2 has a horizontal channel 2.1 for the bolts to be installed to pass through, and the sliding pressure plate 2 has a horizontal channel 2.1 for the bolts to be installed to pass through. The seat 6 is provided with a vertical slide groove 6.1, and the sliding pressure plate 2 is perpendicular to the vertical slide groove 6.1 and is slidably connected; one end of the slide rod 3 is fixed to the upper end surface of the sliding pressure plate 2, and the slide rod one-way locking device is arranged on the sliding path of the slide rod 3. When the slide rod one-way locking device is in the locking position, the slide rod 3 can only slide in the direction close to the support plate 1, and the slide rod 3 drives the sliding pressure plate 2 to press down to clamp the plate to be installed; when the sliding one-way locking device is in the unlocking position, the slide rod 3 can drive the sliding pressure plate 2 to slide in the direction away from the support plate 1.

[0032] In this embodiment, the sliding pressure plate 2 is a thin-walled structure, and the total thickness of the sliding pressure plate 2 and the rubber pad 9 is 1 / 2-1 / 3 of the thickness of the bolt head of the bolt to be installed, ensuring that the wrench can tighten the bolt on the installed plate; the width of the transverse channel 2.1 of the sliding pressure plate 2 is larger than the diameter of the virtual circle where the bolt head of the bolt to be installed is located, ensuring the separation of the subsequent device and the bolt; the length of the transverse channel 2.1 of the sliding pressure plate 2 is consistent with the length of the transverse groove 1.1 of the support plate 1.

[0033] The slide bar one-way locking device comprises a slide bar bracket 4.1, a slide bar pressure cover 4.2, a sliding sleeve 4.3, a guide column 4.4, a limit wing plate 4.5 and a spring 4.6. The slide bar bracket 4.1 and the slide bar pressure cover 4.2 are both provided with arc grooves matching the slide bar 3 on their opposite surfaces. The arc groove of the slide bar bracket 4.1 is a light groove 4.11. The arc groove of the slide bar pressure cover 4.2 is spaced by an array of arc rings. Semi-annular grooves 4.21 are formed between adjacent arc rings. The outer periphery of the slide bar 3 is spaced by an array of semi-annular parts 3.1 matching the semi-annular groove structure. The semi-annular parts 3.1 are made of plastic and their diameter gradually increases in the direction away from the support plate 1. The lower end surface of the semi-annular part 3.1 is located outside the semi-annular groove 4.21, and the upper end surface of the semi-annular part 3.1 is located inside the semi-annular groove 4.21.

[0034] The slide rod support 4.1 is fixedly connected to the inner bottom surface of the U-shaped frame 4.7, the slide rod pressure cover 4.2 is slidably connected to the inner side of the U-shaped frame 4.7 and can be locked on the U-shaped frame 4.7, and the U-shaped frame 4.7 is fixedly connected to the upper part of the slide seat 6; the side wall of the slide rod pressure cover 4.2 is provided with a connecting groove 4.22 inwardly, and the guide column 4.4 is fixed at the center position of the connecting groove 4.22, and the end of the sliding sleeve 4.3 close to the sliding pressure cover 4.2 is provided with a guide groove 4.31 inwardly, and one end of the guide column 4.4 is movably placed in the guide groove 4.31, and the spring 4.6 is placed in the guide groove 4.31 and the two ends are respectively fixedly connected to the guide column 4.4 and the groove bottom of the guide groove 4.31;

[0035] The U-shaped frame 4.7 is provided with a strip groove 4.71, and the sliding sleeve 4.3 is slidably connected in the strip groove 4.71. The bottom end of the sliding sleeve 4.3 extends outwardly to form a limiting wing plate 4.5. The two ends of the strip groove 4.71 are provided with a locking groove 4.72 and an unlocking groove 4.73 on one side close to the limiting wing plate 4.5. The shapes of the connecting groove 4.22, the locking groove 4.72 and the unlocking groove 4.73 match the limiting wing plate 4.5; the sliding sleeve 4.3 is pressed toward one side of the slide bar pressure cover 4.2 until the limiting wing plate 4.5 is placed in the connecting groove 4.22. At this time, the sliding sleeve 4.3 can slide along the strip groove 4.71, and the locking position and unlocking position of the slide bar 3 can be switched. The spring 4.6 can press the limiting wing plate 4.5 tightly in the locking groove 4.72 or the unlocking groove 4.73 in the normal state. At this time, the sliding sleeve 4.3 is locked in the strip groove 4.71.

[0036] In this embodiment, the matching relationship between the semi-annular member 3.1 and the semi-annular groove 4.21 is similar to the structure of a cable tie. When the semi-annular member 3.1 and the semi-annular groove 4.21 are matched, when pressing down, since the lower end face of the semi-annular member 3.1 is located outside the semi-annular groove 4.21, the semi-annular member 3.1 undergoes a slight deformation during the pressing process and can slide down relative to the semi-annular groove 4.21; however, when lifting up, since the upper end face of the semi-annular member 3.1 is located in the semi-annular groove 4.21, the semi-annular groove 4.21 will hinder the semi-annular member 3.1, causing the lifting direction of the slide bar 3 to be locked; when the semi-annular member 3.1 and the semi-annular groove 4.21 are separated, the upper and lower end faces of the semi-annular member 3.1 are located outside the semi-annular groove 4.21, the semi-annular groove 4.21 no longer has an obstructive effect, and the slide bar 3 can slide freely. The semi-annular member 3.1 is thin and tight, ensuring that the sliding pressure plate 2 is tightly pressed against the installed plate; at the same time, a rubber pad 9 made of elastic material is bonded to the lower end surface of the sliding pressure plate 2, so that the sliding pressure plate 2 is tightly pressed against the installed plate, ensuring the stability and margin of the connection.

[0037] When the limiting wing plate 4.5 is located in the locking groove 4.72, the slide bar bracket 4.1 and the slide bar cover 4.2 buckle the slide bar 3, and the semi-annular groove 4.21 cooperates with the semi-annular part 3.1 to realize the one-way locking of the slide bar 3; when the limiting wing plate 4.5 is located in the unlocking groove 4.73, the semi-annular groove 4.21 is separated from the semi-annular part 3.1 to realize the unlocking of the slide bar 3.

[0038] A gasket groove 5.1 and a nut groove 5.2 are sequentially arranged on the nut gasket tray 5 in the direction away from the sliding pressure plate, and a through hole is penetrated through the bottom surface of the nut groove 5.2 for the bolts to be installed to pass through; a U-shaped slide plate 7 is fixedly connected to the bottom surface of the nut gasket tray 5 through a vertical plate, and the two inner side surfaces of the U-shaped slide plate 7 are slidably fitted with the support plate 1 and the position of the U-shaped slide plate 7 can be fixed by clamping bolts 8, and the clamping bolts 8 are threadedly connected to the U-shaped slide plate 7, and the bottom surface of the U-shaped slide plate 7 has a through hole for the bolts to be installed to pass through.

[0039] Working steps:

[0040] S1: Place the nuts and washers in the grooves of the nut and washer tray 5, and hold the tray 1 close to the bottom end of the lower plate of the plate to be installed;

[0041] S2: Slide the U-shaped slide plate 7 to adjust the position of the nut gasket tray 5 so that its center coincides with the center of the threaded hole of the plate to be installed, and fix the U-shaped slide plate 7 by tightening the bolts 8;

[0042] S3: Press the sliding sleeve 4.3 toward one side of the slide bar cover 4.2 until the limiting wing plate 4.5 is placed in the connecting groove 4.22, at which time the sliding sleeve 4.3 can slide along the strip groove 4.71 until the slide bar 3 is locked; release the sliding sleeve 4.3, and under the action of the spring 4.6, the limiting wing plate 4.5 rebounds into the locking groove 4.72, the slide bar cover 4.2 is locked in position, and the slide bar 3 is buckled with the slide bar bracket 4.1 to achieve unidirectional locking of the slide bar 3; by pressing down the slide bar 3, the sliding pressure plate 2 is driven to descend relative to the bracket 1 until the plate to be installed is pressed tightly;

[0043] S4: Pass the bolt 10 to be installed through the transverse channel 2.1 and place it in the threaded hole of the plate to be installed. Tighten the bolt on the plate to be installed by operating the wrench with one hand and match it with the nut and gasket at the lower end;

[0044] S5: Press the sliding sleeve 4.3 toward one side of the slide bar cover 4.2 until the limiting wing plate 4.5 is placed in the connecting groove 4.22. At this time, the sliding sleeve 4.3 can slide along the strip groove 4.71 to the unlocking position of the slide bar 3; release the sliding sleeve 4.3, and under the action of the spring 4.6, the limiting wing plate 4.5 rebounds to the unlocking groove 4.73, and the slide bar cover 4.2 is locked in position and separated from the slide bar 3, so that the slide bar 3 is unlocked in one direction;

[0045] S6: The slide bar 3 drives the sliding pressure plate 2 to rise, and after being separated from the bolt head for a distance, the entire device is moved downward to separate the support plate 1 from the nut gasket, and then the device is taken out to the outside to separate the device from the bolt to be installed and the plate to be installed.

[0046] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A narrow space bolt installation auxiliary tool, characterized by: It comprises a supporting plate (1), a sliding pressure plate (2), a sliding rod (3), a sliding rod one-way locking device (4), a nut gasket tray (5) and a sliding seat (6); The upper end surface of the nut and gasket tray (5) has a groove for accommodating nuts and gaskets, the upper end surface of the support plate (1) has a horizontal slide groove (1.1), the nut and gasket tray (5) is slidably connected to the horizontal slide groove (1.1) and can be locked therein, and the support plate (1) is vertically fixedly connected to the bottom side of the slide seat (6); the sliding pressure plate (2) has a horizontal channel (2.1) for the bolts to be installed to pass through, and the slide seat (6) has a vertical slide groove (6.1), and the sliding pressure plate (2) and the vertical slide groove (6.1) are connected to each other. The sliding rod (3) is vertically and slidably connected; one end of the sliding rod (3) is fixed to the upper end surface of the sliding pressure plate (2); the sliding rod one-way locking device is arranged on the sliding path of the sliding rod (3); when the sliding rod one-way locking device is in the locking position, the sliding rod (3) can only slide in the direction close to the support plate (1), and the sliding rod (3) drives the sliding pressure plate (2) to press down to clamp the plate to be installed; when the sliding one-way locking device is in the unlocking position, the sliding rod (3) can drive the sliding pressure plate (2) to slide in the direction away from the support plate (1).

2. The narrow space bolt installation auxiliary tool according to claim 1, characterized in that: The slide bar one-way locking device comprises a slide bar support seat (4.1), a slide bar cover (4.2), a sliding sleeve (4.3), a guide column (4.4), a limit wing plate (4.5) and a spring (4.6). The slide bar support seat (4.1) and the slide bar cover (4.2) are both provided with arc grooves matching the slide bar (3) on their opposite surfaces. The arc groove of the slide bar support seat (4.1) is a light groove (4.11). The middle of the arc groove of the slide bar cover (4.2) is a light groove (4.12). The arc rings are arranged in an array, and a semi-annular groove (4.21) is formed between adjacent arc rings. The outer periphery of the sliding rod (3) is provided with a semi-annular member (3.1) matching the semi-annular groove structure. The semi-annular member (3.1) is made of plastic and its diameter gradually increases in a direction away from the support plate (1). The lower end surface of the semi-annular member (3.1) is located outside the semi-annular groove (4.21), and the upper end surface of the semi-annular member (3.1) is located inside the semi-annular groove (4.21). The slide bar support (4.1) is fixedly connected to the inner bottom surface of the U-shaped frame (4.7); the slide bar pressure cover (4.2) is slidably connected to the inner side of the U-shaped frame (4.7) and can be locked on the U-shaped frame (4.7); the U-shaped frame (4.7) is fixedly connected to the upper part of the slide seat (6); a connecting groove (4.22) is provided inwardly on the side wall of the slide bar pressure cover (4.2); a guide column (4.4) is fixed at the center position of the connecting groove (4.22); a guide groove (4.31) is provided inwardly at one end of the slide sleeve (4.3) close to the slide pressure cover (4.2); one end of the guide column (4.4) is movably placed in the guide groove (4.31); a spring (4.6) is placed in the guide groove (4.31) and its two ends are respectively fixedly connected to the guide column (4.4) and the groove bottom of the guide groove (4.31); A strip groove (4.71) is provided on the U-shaped frame (4.7), the sliding sleeve (4.3) is slidably connected in the strip groove (4.71), the bottom end of the sliding sleeve (4.3) extends outward to form a limiting wing plate (4.5), and a locking groove (4.72) and an unlocking groove (4.73) are provided on both ends of the strip groove (4.71) on one side close to the limiting wing plate (4.5), and the shapes of the connecting groove (4.22), the locking groove (4.72) and the unlocking groove (4.73) match the limiting wing plate (4.5); The sliding sleeve (4.3) is pressed down toward one side of the slide bar cover (4.2) until the limiting wing plate (4.5) is placed in the connecting groove (4.22). At this time, the sliding sleeve (4.3) can slide along the strip groove (4.71) to switch the slide bar (3) between the locking position and the unlocking position. The spring (4.6) can press the limiting wing plate (4.5) tightly against the locking groove (4.72) or the unlocking groove (4.73) in the normal state. At this time, the sliding sleeve (4.3) is locked in the strip groove (4.71).

3. The narrow space bolt installation auxiliary tool according to claim 2, characterized in that: When the limiting wing plate (4.5) is located in the locking groove (4.72), the slide bar bracket (4.1) and the slide bar cover (4.2) buckle the slide bar (3), and the semi-annular groove (4.21) cooperates with the semi-annular member (3.1) to achieve one-way locking of the slide bar (3); when the limiting wing plate (4.5) is located in the unlocking groove (4.73), the semi-annular groove (4.21) and the semi-annular member (3.1) are separated to achieve unlocking of the slide bar (3).

4. The narrow space bolt installation auxiliary tool according to claim 3, characterized in that: The nut gasket tray (5) is provided with a gasket groove (5.1) and a nut groove (5.2) in sequence along the direction away from the sliding pressure plate, and the bottom surface of the nut groove (5.2) is penetrated by a through hole for the installation bolt to pass through; the bottom surface of the nut gasket tray (5) is fixedly connected with a U-shaped slide plate (7) through a vertical plate, and the two inner side surfaces of the U-shaped slide plate (7) are slidably fitted with the support plate (1) and the position of the U-shaped slide plate (7) can be fixed by tightening bolts (8), and the bottom surface of the U-shaped slide plate (7) has a through hole for the installation bolt to pass through.

5. The narrow space bolt installation auxiliary tool according to claim 4, characterized in that: The lower end surface of the sliding pressure plate (2) is bonded with a rubber pad (9) made of elastic material, and the total thickness of the sliding pressure plate (2) and the rubber pad (9) is less than the thickness of the bolt head of the bolt to be installed, the width of the transverse channel (2.1) of the sliding pressure plate (2) is greater than the diameter of the virtual circle where the bolt head of the bolt to be installed is located, and the length of the transverse channel (2.1) of the sliding pressure plate (2) is consistent with the length of the transverse sliding groove (1.1) of the support plate (1).

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