A bolt mounting device for tight spaces

Abstract

The utility model relates to bolt mounting technical field, concretely is a kind of bolt mounting device for narrow space, including L-shaped rod, the bottom end of L-shaped rod is fixedly connected with rectangular seat, the bottom end of L-shaped rod is equipped with L-shaped slot, and the cavity is equipped on the rectangular seat.The utility model places bolt between two clamping blocks, then rotates knob by rotating rod rotation to drive second bevel gear rotation, second bevel gear drives screw rotation by first bevel gear rotation, screw drives vertical rod extrusion to connecting rod by cross bar, connecting rod drives clamping block movement to fix bolt, holds anti-skid cover and moves bolt to steel corrugated board crest or trough position by L-shaped rod, bolt is installed by rotating L-shaped rod, bolt can be fastened in narrow space, bolt can be installed to fixed position, avoid the phenomenon that bolt slides to arch foot steel corrugated board trough groove.

Description

Technical Field

[0001] This utility model relates to the field of bolt installation technology, specifically a bolt installation device for use in confined spaces. Background Technology

[0002] Medium and small-sized slab arches play a crucial role in bridge reinforcement, and are often reinforced using corrugated steel slab arches. The corrugated steel slabs are prefabricated in sections and connected on-site using high-strength bolts. Each slab is approximately 1 to 3 meters wide, and the high-strength bolts are located at the crests or troughs of the corrugated steel slabs.

[0003] When tightening bolts, workers typically use ordinary wrenches, which requires them to get very close to the bolts. Many loose bolts are located in narrow, deep spaces, making it impossible for workers to reach them with ordinary wrenches and tighten them properly. This is especially true in the confined space between the corrugated steel plate and the bottom of the arch, where it is difficult to install bolts in a fixed position. Bolts often slip into the grooves of the corrugated steel plate at the arch foot during installation. Therefore, we propose a bolt installation device for confined spaces to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a bolt installation device for confined spaces, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bolt installation device for confined spaces, comprising an L-shaped rod, a rectangular seat fixedly connected to the bottom end of the L-shaped rod, an L-shaped groove formed at the bottom end of the L-shaped rod, a cavity formed on the rectangular seat, a screw rotatably connected to the bottom inner wall of the cavity, a horizontal bar threadedly connected to the outer side of the screw, vertical bars fixedly connected to both ends of the horizontal bar, the bottom end of the vertical bar extending below the rectangular seat and rotatably connected to a connecting rod, the rectangular seat slidably sleeved on the outer side of the two vertical bars, a clamping block rotatably connected to the end of the connecting rod, a rotating rod rotatably connected to the right inner wall of the L-shaped groove, the top end of the screw extending into the L-shaped groove and fixedly connected to a first bevel gear, and a second bevel gear fixedly connected to the left end of the rotating rod.

[0006] More preferably, the first bevel gear meshes with the second bevel gear, and the right end of the rotating rod extends out of the L-shaped rod and is fixedly connected to a knob.

[0007] In a further preferred embodiment, a fixing block is fixedly sleeved inside the L-shaped groove, and the fixing block is rotatably sleeved on the outside of the rotating rod.

[0008] More preferably, two positioning rods are fixedly connected to the top inner wall of the cavity, and the vertical rod is slidably sleeved on the outside of the two positioning rods.

[0009] More preferably, the bottom of the rectangular base is fixedly connected to two vertical blocks, and two cylinders are fixedly connected to the sides of the two vertical blocks that are close to each other.

[0010] In a further preferred embodiment, two round rods are fixedly connected to the sides of the two clamping blocks that are far apart from each other. The cylinder is slidably sleeved on the outside of the corresponding round rod, and the cylinder and the corresponding clamping block are directly fixedly connected to the same spring.

[0011] More preferably, the spring is movably sleeved on the outside of the corresponding round rod, and the outside of the L-shaped rod is fixedly sleeved with an anti-slip sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model places the bolt between two clamping blocks, and then rotates the knob in the forward direction to drive the second bevel gear to rotate through the rotation rod. The second bevel gear drives the screw to rotate through the rotation of the first bevel gear. The screw drives the vertical rod through the horizontal rod to squeeze the connecting rod. The connecting rod drives the clamping blocks to move and fix the bolt. Holding the anti-slip sleeve, the bolt is moved to the crest or trough of the corrugated steel plate through the L-shaped rod. The bolt is installed by rotating the L-shaped rod, which enables the bolt to be tightened in a narrow space and can install the bolt in a fixed position, avoiding the phenomenon of the bolt slipping into the trough groove of the corrugated steel plate at the arch foot. Attached Figure Description

[0013] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention;

[0015] Figure 3 This is a front view structural diagram of the present utility model;

[0016] Figure 4 This is a frontal sectional view of the present invention.

[0017] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the rectangular base in this utility model.

[0018] In the diagram: 1. L-shaped rod; 2. Rectangular seat; 3. L-shaped groove; 4. Cavity; 5. Screw; 6. Horizontal rod; 7. Vertical rod; 8. Connecting rod; 9. Clamping block; 10. Rotating rod; 11. First bevel gear; 12. Second bevel gear; 13. Knob; 14. Fixing block; 15. Positioning rod; 16. Vertical block; 17. Cylinder; 18. Round rod; 19. Spring; 20. Anti-slip sleeve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example

[0021] Please see Figure 1-5 This utility model provides a technical solution: a bolt installation device for confined spaces, comprising an L-shaped rod 1, a rectangular seat 2 fixedly connected to the bottom end of the L-shaped rod 1, an L-shaped groove 3 formed at the bottom end of the L-shaped rod 1, a cavity 4 formed on the rectangular seat 2, a screw 5 rotatably connected to the bottom inner wall of the cavity 4, a horizontal rod 6 threadedly connected to the outer side of the screw 5, vertical rods 7 fixedly connected to both ends of the horizontal rod 6, the bottom end of the vertical rod 7 extending below the rectangular seat 2 and rotatably connected to a connecting rod 8, the rectangular seat 2 slidingly sleeved on the outer side of the two vertical rods 7, a clamping block 9 rotatably connected to the end of the connecting rod 8, a rotating rod 10 rotatably connected to the right inner wall of the L-shaped groove 3, and a first bevel gear 11 fixedly connected to the top end of the screw 5 extending into the L-shaped groove 3. The left end of the rotating rod 10 is fixedly connected to the second bevel gear 12. The bolt is placed between the two clamping blocks 9. Then, the knob 13 is rotated in the forward direction, which drives the second bevel gear 12 to rotate through the rotating rod 10. The second bevel gear 12 drives the screw 5 to rotate through the first bevel gear 11. The screw 5 drives the vertical rod 7 through the horizontal rod 6 to press the connecting rod 8. The connecting rod 8 drives the clamping block 9 to move and fix the bolt. Hold the anti-slip sleeve 20 and move the bolt to the crest or trough of the corrugated steel plate through the L-shaped rod 1. The bolt is installed by rotating the L-shaped rod 1, so that the bolt can be tightened in a narrow space and installed in a fixed position, avoiding the phenomenon of the bolt slipping into the trough groove of the corrugated steel plate of the arch foot.

[0022] In this embodiment, specifically: the first bevel gear 11 meshes with the second bevel gear 12, and the right end of the rotating rod 10 extends to the outside of the L-shaped rod 1 and is fixedly connected to a knob 13;

[0023] In this embodiment, specifically: a fixing block 14 is fixedly sleeved inside the L-shaped groove 3, and the fixing block 14 is rotatably sleeved on the outside of the rotating rod 10;

[0024] In this embodiment, specifically: two positioning rods 15 are fixedly connected to the top inner wall of the cavity 4, and the vertical rod 7 is slidably sleeved on the outside of the two positioning rods 15;

[0025] In this embodiment, specifically: two vertical blocks 16 are fixedly connected to the bottom of the rectangular base 2, and two cylinders 17 are fixedly connected to the side of the two vertical blocks 16 that are close to each other.

[0026] In this embodiment, specifically: two round rods 18 are fixedly connected to the sides of the two clamping blocks 9 that are far apart from each other, and a cylinder 17 is slidably sleeved on the outside of the corresponding round rod 18. The cylinder 17 and the corresponding clamping block 9 are directly fixedly connected to the same spring 19.

[0027] In this embodiment, specifically: the spring 19 is movably sleeved on the outside of the corresponding round rod 18, and the outside of the L-shaped rod 1 is fixedly sleeved with an anti-slip sleeve 20.

[0028] In operation, this invention operates as follows: In the narrow space between the corrugated steel plate and the bottom of the arch ring, when bolts need to be installed at the crests or troughs of the corrugated steel plate, the bolts are placed between the two clamping blocks 9. Then, the knob 13 is rotated clockwise. The rotation of knob 13 causes the rotating rod 10 to rotate, which in turn causes the second bevel gear 12 to rotate. The second bevel gear 12 then causes the first bevel gear 11 to rotate, which in turn causes the screw 5 to rotate. The screw 5 then causes the horizontal bar 6 to move downwards, which in turn causes the two vertical bars 7 to move downwards. The vertical bars 7 slide outside the two positioning rods 15. During this movement, the vertical bars 7 press against the connecting rod 8. Under this pressure, the connecting rod 8 moves and rotates, causing the clamping blocks 9 to move. The corresponding round rod 18 moves, and the cylinder 17 positions the corresponding round rod 18. During the movement, the clamping block 9 stretches the spring 19. The two clamping blocks 9 move towards each other and fix the bolt. Then, the anti-slip sleeve 20 is held and the bolt is moved to the crest or trough of the corrugated steel plate through the L-shaped rod 1. The bolt is installed by rotating the L-shaped rod 1. After installation, the knob 13 is rotated in the opposite direction, so that the two clamping blocks 9 move away from each other and loosen the clamping force on the bolt. The L-shaped rod 1 is then removed from the narrow space, thus forming a bolt installation device for narrow spaces. This device enables the bolt to be tightened in narrow spaces and can install the bolt in a fixed position, preventing the bolt from slipping into the trough of the corrugated steel plate at the arch foot.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bolt mounting device for confined spaces, comprising an L-shaped rod (1), characterized in that: The bottom end of the L-shaped rod (1) is fixedly connected to a rectangular seat (2). The bottom end of the L-shaped rod (1) is provided with an L-shaped groove (3). The rectangular seat (2) is provided with a cavity (4). The bottom inner wall of the cavity (4) is rotatably connected to a screw (5). The outer side of the screw (5) is threadedly connected to a horizontal rod (6). Both ends of the horizontal rod (6) are fixedly connected to vertical rods (7). The bottom end of the vertical rod (7) extends to the bottom of the rectangular seat (2) and is rotatably connected to a connecting rod (8). The rectangular seat (2) is slidably sleeved on the outside of the two vertical rods (7). The end of the connecting rod (8) is rotatably connected to a clamping block (9). The right inner wall of the L-shaped groove (3) is rotatably connected to a rotating rod (10). The top end of the screw (5) extends into the L-shaped groove (3) and is fixedly connected to a first bevel gear (11). The left end of the rotating rod (10) is fixedly connected to a second bevel gear (12).

2. The bolt installation device for confined spaces according to claim 1, characterized in that: The first bevel gear (11) meshes with the second bevel gear (12), and the right end of the rotating rod (10) extends to the outside of the L-shaped rod (1) and is fixedly connected to a knob (13).

3. A bolt installation device for confined spaces according to claim 2, characterized in that: A fixing block (14) is fixedly sleeved inside the L-shaped groove (3), and the fixing block (14) is rotatably sleeved on the outside of the rotating rod (10).

4. A bolt installation device for confined spaces according to claim 3, characterized in that: Two positioning rods (15) are fixedly connected to the top inner wall of the cavity (4), and the vertical rod (7) is slidably sleeved on the outside of the two positioning rods (15).

5. A bolt installation device for confined spaces according to claim 4, characterized in that: Two vertical blocks (16) are fixedly connected to the bottom of the rectangular base (2), and two cylinders (17) are fixedly connected to the side of the two vertical blocks (16) that are close to each other.

6. A bolt mounting device for confined spaces according to claim 5, characterized in that: Two round rods (18) are fixedly connected to the two clamping blocks (9) on the side away from each other. The cylinder (17) is slidably sleeved on the outside of the corresponding round rod (18). The cylinder (17) and the corresponding clamping block (9) are directly fixedly connected by the same spring (19).

7. A bolt installation device for confined spaces according to claim 6, characterized in that: The spring (19) is movably sleeved on the outside of the corresponding round rod (18), and the outside of the L-shaped rod (1) is fixedly sleeved with an anti-slip sleeve (20).

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