CN115539480A

CN115539480A - Limited space fastening bolt and installation tool thereof

Info

Publication number: CN115539480A
Application number: CN202210987125.2A
Authority: CN
Inventors: 王振华; 寻凯; 冷定档
Original assignee: Tianhong Power Technology Yangzhou Co ltd
Current assignee: Tianhong Power Technology Yangzhou Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-12-30

Abstract

The application discloses limited space fastening bolt, including supporting part, screw rod section and the portion of closing soon, the screw rod section is provided with the supporting part and closes soon between the portion. When the rack is installed, the screwing part can extend out of the threaded hole of the rack base plate from the inside of the supporting leg, so that an operator can fasten the fastening bolt and the rack base plate in a rotating mode outside the supporting leg; therefore, the connecting strength of the fastening bolt is improved, and meanwhile, the installation of operators is facilitated. The utility model also discloses a fastening bolt's installation frock, can conveniently install foretell fastening bolt in limited narrow and small space.

Description

Limited space fastening bolt and installation tool thereof

Technical Field

The application relates to the technical field of electric power engineering construction, in particular to a fastening bolt and an installation tool thereof.

Background

The tower assembling robot is used for assembling and constructing the high-voltage transmission iron tower, and is a construction mode commonly used in the construction of overhead transmission lines. The tower assembling robot has support legs of a sleeved telescopic structure according to construction requirements; the specific telescopic mode adopts a gear rack to drive, so that the rack needs to be fixed through a fastening bolt when the rack is installed.

In the prior art, in order to facilitate installation of the fastening bolt, threads are directly tapped on the pipe wall of the supporting leg so as to install the fastening bolt. However, the wall of the supporting leg is thin, the thread is not convenient to tap, and the connecting strength of the fastening bolt is not high. And the rack base the thickness of the plate is thicker, is suitable for tapping threads; however, when the thread is tapped on the rack base plate, the fastening bolt needs to be inserted from the inside of the leg to the outside, and the fastening bolt needs to be rotated and tightened from the outside of the leg, so that the conventional fastening bolt cannot meet the installation requirement. Therefore, a fastening bolt capable of meeting the installation requirement is urgently needed.

Disclosure of Invention

One of the objects of the present application is to provide a fastening bolt capable of improving the connection strength.

Another object of this application is to provide a frock that can conveniently carry out fastening bolt installation in finite space.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a fastening bolt for a limited space comprises a supporting part, a screw rod section and a screwing part, wherein the screw rod section is arranged between the supporting part and the screwing part; when the rack is installed, the fastening bolt penetrates through the pipe wall of the supporting leg and the rack base plate through the screwing part in the supporting leg; and then the screwing part is rotated outside the supporting leg, so that the screw section is screwed with the threaded hole in the rack base plate until the supporting part is abutted against the inner wall of the supporting leg.

Preferably, the pipe wall of the supporting leg is provided with a through hole aligned with the threaded hole in the rack substrate; the cross-sectional dimension of the screwing part is smaller than that of the screw section, so that the screwing part can sequentially penetrate through the through hole and the threaded hole when the rack is installed.

Preferably, the cross section of the screwing part is a regular polygon; the cross section of the supporting part is circular or regular polygon.

The mounting tool for the fastening bolt comprises a lifting assembly and an operating assembly; the lifting assembly is used for carrying the fastening bolt; the operating assembly is connected with the lifting assembly; when the mounting of the rack is carried out, the operating assembly is suitable for driving the lifting assembly to carry the fastening bolt to carry out a first process and a second process; wherein the first process: the operating assembly is adapted to drive the lifting assembly to carry the fastening bolt into the interior of the leg, until the fastening bolt is over against the threaded hole arranged on the rack substrate; the second process: the operating assembly is suitable for driving the lifting assembly to lift the fastening bolt, and the screwing part penetrates through the pipe wall of the supporting leg and the threaded hole in the rack base plate.

Preferably, the first and second liquid crystal materials are, the lifting assembly comprises an upper sliding block and a lower sliding block; the upper slider and the lower slider the two parts are matched through a lifting structure; the operating components are respectively connected with the upper part the sliding block is connected with the lower sliding block; the end surface of the upper sliding block is provided with a placing groove; when the first process is carried out, the fastening bolt is placed in the placing groove and synchronously extends into the supporting leg along with the upper sliding block and the lower sliding block; when the second process is carried out, the operating component is suitable for driving the lower sliding block to slide relative to the upper sliding block, so that the upper sliding block and the fastening bolt are lifted through the lifting structure.

Preferably, the lifting structure comprises an upper inclined surface and a lower inclined surface which are in sliding fit with each other; the upper inclined plane is arranged on the upper sliding block, and the lower inclined plane is arranged on the lower sliding block; so that, when the second process is performed, the lower slider is adapted to press the upper inclined surface by the lower inclined surface during sliding, so that the upper slider is lifted together with the fastening bolt.

Preferably, the lifting structure further comprises a guide component, and the guide component is respectively matched with the upper sliding block and the lower sliding block, so that the upper sliding block and the lower sliding block are not offset all the time.

Preferably, the guide member includes a pair of guard plates, and the guard plates are respectively and fixedly mounted on two sides of the upper slide block and are in sliding fit with two sides of the lower slide block, so that the lower slide block slides parallel to the guard plates in the second process.

Preferably, the lifting assembly is provided with a positioning assembly; the positioning component is suitable for being in sliding fit with the inner wall of the supporting leg, so that in the first process, the projection of the fastening bolt in the pushing direction of the operating component is always aligned with the threaded hole.

Preferably, the positioning assembly comprises an upper guide rule, a lower guide rule and a fastener; the upper guide ruler and the lower guide ruler are mutually parallel and are slidably arranged on the lifting assembly; scales are arranged on the upper guide ruler and the lower guide ruler, so that the upper guide ruler and the lower guide ruler are adjusted according to the size of the supporting leg to be respectively matched with the inner walls of the supporting leg on two sides of the threaded hole; the fastener is suitable for fixing the upper guide ruler and the lower guide ruler after the adjustment is completed.

Preferably, the upper sliding block and the lower sliding block are both provided with mounting grooves; the operating assembly comprises a pair of operating rods, and the end parts of the two operating rods correspondingly extend into the mounting groove and are hinged; when the first process is carried out, the upper sliding block and the lower sliding block synchronously extend into the supporting leg through the operating rod; when the second process is carried out, the lower sliding block is suitable for sliding under the driving of one of the operating rods.

Preferably, the operating assembly further comprises at least one pair of connecting rods, and the connecting rods are detachably connected with the corresponding operating rods through connecting assemblies, so that the distance of the lifting assembly extending into the supporting legs is increased in the first process.

Preferably, the coupling assembly includes an in-line nut member and an in-line bolt member; the embedded nut piece and the embedded bolt piece are correspondingly and fixedly arranged at the end parts of the connecting rod and the operating rod, so that the connecting rod and the operating rod are connected through the embedded nut piece and the embedded bolt piece.

The mounting tool for the fastening bolt comprises a connecting part and a traction rope, wherein the traction rope is connected with a first end of the connecting part, and a second end of the connecting part is suitable for being detachably connected with a screwing part of the fastening bolt; when the rack is installed, the connecting part is suitable for extending into the supporting leg along the threaded hole of the rack base plate and is connected with the fastening bolt to be installed at the port of the supporting leg; and pulling the traction rope outside the supporting leg to drag the connecting part to move to the threaded hole together with the fastening bolt.

Preferably, the end face of the screwing part of the fastening bolt is provided with a connecting hole, and the connecting part is suitable for being in threaded connection with the connecting hole through a connecting screw rod arranged at the second end; and the cross-sectional dimension of the connecting part is smaller than or equal to the dimension of the threaded hole.

Compared with the prior art, the beneficial effect of this application lies in:

(1) According to the rack mounting device, the screwing part is arranged at the front end of the screw section of the fastening bolt, so that when the rack is mounted, compared with the traditional mounting mode, the fastening bolt can stretch out the screwing part from the inside of the supporting leg to form a threaded hole, and an operator can rotate and screw the fastening bolt and the rack substrate outside the supporting leg; therefore, the connecting strength of the fastening bolt is improved, and meanwhile, the installation of operators is facilitated.

(2) The application also provides a tool for installing the fastening bolt in the limited narrow space inside the supporting leg, and the tool can be convenient for an operator to install the fastening bolt inside.

Drawings

Fig. 1 is a schematic structural view of a fastening bolt of the present invention.

Fig. 2 is a schematic structural view of a rack mounted inside a leg by a fastening bolt according to the present invention.

FIG. 3 shows a bolt fastening method of the present invention the structural schematic diagram of installation frock.

FIG. 4 shows one embodiment of the present invention an example lift assembly is shown in an exploded view.

FIG. 5 is an exploded view of an operating assembly of one embodiment of the installation tool of the present invention

Fig. 6 is a schematic structural view of one embodiment of the installation tool of the invention, which carries a fastening bolt to extend into the inside of the supporting leg.

Fig. 7 is a side cross-sectional view of one embodiment of the installation tool of the present invention carrying a fastening bolt extending into the interior of the leg.

Fig. 8 is a schematic structural view illustrating that the fastening bolt is lifted by one embodiment of the installation tool of the present invention.

Fig. 9 is a schematic structural view of the fastening bolt of the present invention detached from one of the mounting tools and mounted on the supporting leg.

Fig. 10 is a schematic structural view of another embodiment of the installation tool in the invention.

Fig. 11 is a schematic view of a fitting state of another embodiment of the mounting tool and a fastening bolt according to the present invention.

Fig. 12 is a schematic view of the installation tool of the invention in a state of carrying a fastening bolt to extend into the inside of a leg.

Fig. 13 is a schematic structural view of another embodiment of the mounting tool of the invention pulling a fastening bolt against a side portion of a leg.

In the figure: the fastening bolt comprises a fastening bolt 1, a supporting part 11, a screw rod section 12, a screwing part 13, a connecting hole 130, an expansion joint 21, a through hole 210, a rack base plate 300, a threaded hole 310, a lifting assembly 4, a placing groove 400, a mounting groove 401, an upper sliding block 41, a sliding groove 410, an upper inclined surface 411, a lower sliding block 42, a lower inclined surface 421, a protective plate 43, a positioning assembly 44, an upper guide rule 441, a lower guide rule 442, a fastening piece 443, an operating assembly 5, an operating rod 51, a rotating piece 52, a connecting rod 53, a connecting assembly 54, an embedded nut piece 541, an embedded bolt piece 542, a connecting part 61, a connecting screw 610 and a traction rope 62.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments described below or between the technical features may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations and positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

One aspect of the present application provides a limited space fastening bolt 1, as shown in fig. 1 and 2, wherein one preferred embodiment includes a support portion 11, a screw section 12, and a screw engagement portion 13. The screw section 12 is arranged between the supporting part 11 and the screwing part 13; when the rack is installed, the fastening bolt 1 can penetrate through the pipe wall of the supporting leg and the rack base plate 300 through the screwing part 13 in the supporting leg; subsequently, the screwing portion 13 can be rotated outside the leg to screw the screw section 12 into the threaded hole 310 on the rack base plate 300 until the support portion 11 abuts against the inner wall of the leg.

It will be appreciated that conventional bolts primarily include a threaded shank and a hexagonal head; therefore, when the rack is installed, if a traditional bolt is adopted, the bolt needs to penetrate through the rack base plate 300 from the outside of the supporting leg and be screwed with the pipe wall of the supporting leg; so that the thinner wall of the pipe results in insufficient connection strength of the conventional bolt.

In contrast to the conventional bolt, the fastening bolt 1 of the present application is provided with a screw 13 at the front end of the screw section 12. When the rack is mounted, the fastening bolt 1 is inserted into the inside of the leg through the engaging portion 13, so that the operator can engage the fastening bolt 1 through the engaging portion 13 outside the leg, and the screw section 12 of the fastening bolt 1 and the rack base plate 300 are screwed together. Thereby, the installation strength of the rack base plate 300 is ensured by the connection strength of the fastening bolt 1, and the operator can conveniently perform screwing installation through the overhanging screwing part 13.

In this embodiment, as shown in fig. 2 and 6, the leg mainly includes an expansion joint 21 and a base joint (not shown) in the form of a square pipe; the rack is positioned between the telescopic joint 21 and the base joint and is fixedly arranged on the outer wall of the telescopic joint 21; so that the telescopic joint 21 and the base joint are mutually telescopic through a gear and rack structure. Meanwhile, the rack comprises a rack base plate 300 and rack segments arranged on two sides of the extending direction of the rack base plate 300; the screw hole 310 is thus provided in the optical plate segment between the rack segments on both sides of the rack base plate 300 to avoid interference with the rack segments. When the rack is installed, the rack is fixedly installed on the telescopic joint 21, and then the telescopic joint 21 together with the rack is installed in a matching way with the base joint.

Specifically, as shown in fig. 2, the tube wall of the telescopic section 21 of the leg is provided with a through hole 210 aligned with the threaded hole 310 on the rack base plate 300. The diameter of the through hole 210 is greater than or equal to the size of the threaded hole 310, so as to ensure that the screw section 12 can smoothly pass through the through hole 210; the cross-sectional dimension of the screw 13 is smaller than the cross-sectional dimension of the screw section 12 so that the screw 13 can sequentially pass through the through-hole 210 and the screw hole 310 when the rack is mounted. Meanwhile, the diameter of the through hole 210 is smaller than the cross-sectional dimension of the support portion 11, so as to ensure that the support portion 11 can stably abut against the inner wall of the telescopic joint 21.

In the present embodiment, as shown in fig. 1, the cross section of the screwing portion 13 is a regular polygon; the cross section of the support 11 is circular or regular polygonal.

It can be understood that, when the operator drives the screwing portion 13 to screw the screw section 12 and the threaded hole 310, the screwing portion 13 is actually equivalent to the head of a conventional bolt, so the cross section of the screwing portion 13 can be square, regular hexagon, and the like, so that the screwing portion 13 can be driven by a wrench or other tools with similar functions; for the convenience of processing, the cross-sectional shape of the screw portion 13 is preferably square. The supporting portion 11 only has the function of supporting against each other, and the cross section of the supporting portion 11 may be any shape such as a circle and a regular polygon, and only needs to satisfy that the size of the cross section is larger than the diameter of the through hole 210; however, in order to facilitate the processing of the support portion 11, the cross section of the support portion 11 is preferably circular in the present application.

The fastening bolt 1 described above cannot be installed in a conventional manner because it needs to be installed from a limited narrow space inside the telescopic joint 21 of the leg.

In order to ensure that the fastening bolt 1 can be installed in a limited space inside a supporting leg, another aspect of the present application provides a fastening bolt installation tool, as shown in fig. 3 to 9, wherein a preferred embodiment comprises a lifting assembly 4 and an operating assembly 5; the lifting assembly 4 is used for carrying the fastening bolt 1; the operating assembly 5 is connected to the lift assembly 4. When the rack is installed, the operating assembly 5 can drive the lifting assembly 4 to carry out an installation process comprising a first process and a second process along with the fastening bolt 1; wherein the first process: the operation assembly 5 can drive the lifting assembly 4 to carry the fastening bolt 1 to extend into the telescopic joint 21 of the supporting leg until the fastening bolt 1 is opposite to the threaded hole 310 formed in the rack base plate 300; the second process: the operating assembly 5 can drive the lifting assembly 4 to lift the fastening bolt 1 until the screwing part 13 passes through the pipe wall of the supporting leg and the threaded hole 310 on the rack base plate 300. Subsequently, an operator can perform screwing operation on the screwing part 13 of the fastening bolt 1 from the outside of the telescopic joint 21 through a tool, so that the fastening bolt 1 fixes the rack base plate 300 and the telescopic joint 21, and the lifting assembly 4 keeps a lifting state in the process; after the fastening bolt 1 completes the installation of the rack, the operating assembly 5 may pull the lifting assembly 4 out of the telescopic joint 21 and re-carry the fastening bolt 1 for the next installation process.

In this embodiment, as shown in fig. 4 and 7 to 9, the lifting assembly 4 comprises an upper slider 41 and a lower slider 42; the upper slider 41 and the lower slider 42 are matched through a lifting structure; the operating assembly 5 is connected with the upper slider 41 and the lower slider 42 respectively; the end face of the upper slider 41 is provided with a placement groove 400, and the placement groove 400 can be used for placing the fastening bolt 1 to be installed. When the first process is performed, the fastening bolt 1 to be installed is placed in the placing groove 400 and is simultaneously inserted into the inside of the leg with the upper slider 41 and the lower slider 42 by the push of the operating assembly 5. When the second process is performed, the operating assembly 5 may drive the lower slider 42 to slide relative to the upper slider 41, so that the upper slider 41 is lifted together with the fastening bolt 1 by the lifting structure until the screwing portion 13 passes through the pipe wall of the leg and the threaded hole 310 on the rack base plate 300.

It will be understood that the sectional shape of the placement groove 400 is adapted to the sectional shape of the support portion 11, i.e. it is circular, and the depth of the placement groove 400 only needs to be the length of the support portion 11.

In this embodiment, there are various specific structures of the lifting structure, and as shown in fig. 4 and fig. 7 to 9, the lifting structure includes an upper inclined surface 411 and a lower inclined surface 421 which are slidably engaged with each other; the upper inclined surface 411 is provided on the upper slider 41, and the lower inclined surface 421 is provided on the lower slider 42. Thus, when the second process is performed, the lower slider 42 can press the upper inclined surface 411 by the lower inclined surface 421 in the process of sliding by the operation member 5, so that the upper slider 41 is lifted together with the fastening bolt 1.

It will be appreciated that the lower slider 42 can slide under the pull or push of the operating assembly 5 to press the upper slider 41; the specific sliding direction of the lower slider 42 may be determined according to the inclination directions of the upper and lower

inclined surfaces

411 and 421. For example, as shown in fig. 7 to 9, the lower slider 42 can slide under the pull-back of the operating unit 5 to press the upper slider 41 to lift the fastening bolt 1.

In this embodiment, as shown in fig. 4 and 6, the lifting structure further includes a guide member, and the guide member is respectively matched with the upper slider 41 and the lower slider 42, so that the upper slider 41 and the lower slider 42 are not offset all the time.

It will be understood that during the insertion of the upper slider 41 and the lower slider 42 into the telescopic section 21 and during the sliding of the lower slider 42 relative to the upper slider 41, a shift may occur between the upper slider 41 and the lower slider 42 perpendicular to the insertion direction or the sliding direction, so that there is a risk of the upper slider 41 and the lower slider 42 becoming detached from each other. Therefore, by providing the guide member, it is possible to ensure that the upper slider 41 and the lower slider 42 remain relatively stationary inside the telescopic joint 21 in the first process, and that the lower slider 42 only performs sliding parallel to the insertion direction in the second process.

Specifically, the guide member has various structures including, but not limited to, the following two.

The structure I is as follows: as shown in fig. 4 and 6, the guiding member includes a pair of protection plates 43, two protection plates 43 are respectively fixedly mounted on two sides of the upper sliding block 41 and are in sliding fit with two sides of the lower sliding block 42, so that the upper sliding block 41 and the lower sliding block 42 are kept relatively stationary and extend into the telescopic joint 21 in the first process, and the lower sliding block 42 slides parallel to the protection plates 43 in the second process.

The structure II is as follows: the guide component comprises a T-shaped sliding groove and a T-shaped sliding block which are mutually clamped; the T-shaped sliding groove and the T-shaped sliding block are respectively arranged on the upper inclined surface 411 and the lower inclined surface 421; therefore, the T-shaped sliding groove and the T-shaped sliding block are clamped to ensure that the upper sliding block 41 and the lower sliding block 42 keep relatively static and extend into the telescopic joint 21 in the first process, and the lower sliding block 42 slides in a direction parallel to the extending direction in the second process.

It can be understood that, for the first structure, the whole structure is simple, the processing is convenient, and the installation is also convenient; and for structure two, processing is comparatively difficult, and in the second in-process, the frictional force between T type spout and the T type slider is great, leads to the operation comparatively difficult. Therefore, the first structure is preferably adopted in the present application as the structure of the guide member.

In one embodiment of the present application, as shown in fig. 4 and 6, the lift assembly 4 further has a positioning assembly 44 mounted thereon; the positioning member 44 can be slidably engaged with the inner wall of the telescopic section 21 of the leg, so that the projection of the fastening bolt 1 in the pushing direction of the operating member 5 is always aligned with the threaded hole 310 in the first process.

It can be understood that, when the fastening bolt 1 is installed, the dimensions of the upper slider 41 and the lower slider 42 are often required to be smaller than the cross-sectional dimension of the telescopic joint 21, so as to ensure that the upper slider 41 and the lower slider 42 can smoothly extend into the telescopic joint 21. Therefore, a clearance may exist between both sides of the upper slider 41 and the lower slider 42 and both sides of the telescopic joint 21, so that in the first process and the second process, the entirety of the upper slider 41 and the lower slider 42 formed by the protector plate 43 may be shifted to the side, and the fastening bolt 1 carried thereby may not be aligned with the threaded hole 310, thereby making the mounting process difficult. Therefore, by providing the positioning member 44, it can be ensured that the projection of the fastening bolt 1 in the pushing direction of the operating member 5 is always aligned with the threaded hole 310 in the first process and the second process.

In the present embodiment, as shown in fig. 4 and 6, the positioning assembly 44 includes an upper guide 441, a lower guide 442, and a fastener 443; the upper and

lower guides

441, 442 are slidably mounted parallel to each other to the lifting assembly 4. Scales are arranged on the upper guide ruler 441 and the lower guide ruler 442, so that the upper guide ruler 441 and the lower guide ruler 442 can be adjusted according to the size of the supporting leg to be respectively matched with the inner walls of the telescopic joints 21 on the two sides of the threaded hole 310; the fastener 443 may fix the upper guide 441 and the lower guide 442 after the adjustment is completed.

Specifically, the end face of the upper slider 41 is provided with a sliding slot 410 perpendicular to the driving direction of the operating assembly 5; the upper guide 441 and the lower guide 442 are slidably mounted in the slide groove 410 in a stacked manner such that the upper guide 441 and the lower guide 442 are adjusted in size by sliding along the slide groove 410.

It can be understood that the fastening bolt 1 is placed on the upper slider 41, and the positioning member 44 is mounted on the end surface of the upper slider 41 in both the first process and the second process, only by ensuring that the upper slider 41 does not shift to the side. Meanwhile, in order to prevent the thicknesses of the upper and

lower guides

441 and 442 from affecting the lifting height of the upper slider 41, the upper and

lower guides

441 and 442 may be mounted by providing the slide groove 410. The fasteners 443 are prior art, and a common fastener 443 is a bolt.

In one embodiment of the present application, as shown in fig. 4 to 9, the operating assembly 5 includes a pair of operating rods 51, and the two operating rods 51 are respectively hinged to the upper slider 41 and the lower slider 42 through end portions. So that the upper slider 41 and the lower slider 42 can be synchronously inserted into the inside of the telescopic joint 21 of the leg through the operation rod 51 when the first process is performed; while in the second process, the lower slider 42 can slide under the driving of one of the operating rods 51 hinged with the lower slider 42; thereby lifting the upper slide 41 together with the carried fastening bolt 1.

Specifically, as shown in fig. 4 to 9, each of the upper slider 41 and the lower slider 42 is provided with a mounting groove 401, and the ends of the two operation levers 51 extend into the mounting groove 401 and are hinged by the rotating member 52.

It is understood that the installation groove 401 is provided to increase the supporting strength of the operation lever 51. Meanwhile, by hinging the operating rod 51 with the upper slider 41 and the lower slider 42, the mounting and dismounting of the operating rod 51 can be facilitated. The rotating member 52 is conventional, and the rotating member 52 is typically a bolt with a polished rod.

It should be noted that the length of the leg is generally several meters, the length of the rack corresponds to the length of the leg, and the rack needs to be installed at multiple points in order to ensure the installation strength of the rack. That is, one fastening bolt 1 needs to be fixedly installed every set distance of the rack base plate 300. For the position closer to the end of the leg, the lifting assembly 4 can be extended only by the operating rod 51; as the distance of the screw hole 310 on the rack base plate 300 gradually increases, the length of the operation rod 51 cannot be satisfied.

Therefore, in order to ensure that the operating assembly 5 can mount the fastening bolt 1 in the threaded hole 310 which meets any distance, as shown in fig. 5, the operating assembly 5 further comprises at least one pair of connecting rods 53, and the connecting rods 53 are detachably connected with the corresponding operating rods 51 through the connecting assembly 54, so that in the first process, the distance that the lifting assembly 4 extends into the inside of the supporting leg can be increased through the connection of the connecting rods 53 and the operating rods 51.

It will be understood that the end of each operating rod 51 can be continuously connected to a plurality of connecting rods 53, and that the adjacent connecting rods 53 are also detachably connected by a connecting assembly 54. Through the detachable connection mode, the problem that the operation assembly 5 is too long and inconvenient to operate when the fastening bolt 1 is installed in the short-distance threaded hole 310 can be avoided.

In the present embodiment, as shown in fig. 5, the coupling assembly 54 includes an embedded nut member 541 and an embedded bolt member 542; for convenience of description, the connection of the operating lever 51 and the connecting lever 53 is taken as an example; the embedded nut member 541 and the embedded bolt member 542 are fixedly installed to the ends of the connecting rod 53 and the operating rod 51, respectively, so that the connecting rod 53 and the operating rod 51 are detachably screwed by the embedded nut member and the embedded bolt member 542.

For the sake of easy understanding, the mounting process of the fastening bolt 1 will be explained in detail below.

(1) The distance D between the two sides of the telescopic joint 21 is measured, so that the adjusting distance of the upper guide rule 441 and the lower guide rule 442 to the two sides is (D-D)/2 according to the width D of the upper sliding block 41; then, the upper guide 441 and the lower guide 442 are adjusted to the corresponding positions on both sides according to the scales on the upper guide 441 and the lower guide 443, and are fixed by the fastening members 443 after the adjustment is completed.

(2) The fastening bolt 1 to be installed is placed in the placement groove 400 of the end surface of the upper slider 41.

(3) The first process is as follows: as shown in fig. 7, the operator inserts the lower slider 42 and the upper slider 41 carrying the fastening bolt 1 into the telescopic joint 21 by using the operation rod 51. In the process of moving the upper slider 41 and the lower slider 42, the lower end surface of the lower slider 42 slides to be attached to the inner wall of the telescopic joint 21 opposite to the through hole 210; meanwhile, the ends of the upper guide 441 and the lower guide 442 respectively stick to the inner walls of the telescopic joint 21 on both sides of the through hole 210. Until the axis of the fastening bolt 1 coincides with the axis of the threaded hole 310 to be mounted.

(4) A second process: as shown in fig. 8, the operator holds the operation lever 51 connected to the upper slider 41; meanwhile, the lower slider 42 is pulled back by the operating rod 51 connected with the lower slider 42, so that the lower slider 42 presses the upper inclined surface 411 through the lower inclined surface 421, and further drives the upper slider 41 to lift together with the fastening bolt 1 until the screwing part 13 of the fastening bolt 1 passes through the through hole 210 of the telescopic joint 21 and the corresponding threaded hole 310 on the rack base plate 300.

(5) As shown in fig. 9, the operator can then rotate the screwing portion 13 from the outside of the telescopic joint 21 by a tool such as a wrench, so that the screw section 12 of the fastening bolt 1 and the corresponding threaded hole 310 are screwed until the support portion 11 abuts against the inner wall of the telescopic joint 21.

(6) After the fastening bolt 1 is mounted as described above, the upper slider 41 may be slightly lowered and then pulled out of the inside of the telescopic joint 21 together with the lower slider 42. Then, the next screw hole 310 is installed by placing a new fastening bolt 1.

(7) As the distance of the screw hole 310 to be installed is gradually increased, the connecting rod 53 may be connected to the operating rod 51 through the connecting assembly 54 to increase the penetration distance of the lifting assembly 4.

It will be understood that the direction indicated by the dashed arrow in fig. 8 and 9 is the direction of movement of the corresponding component.

In order to ensure that the fastening bolt 1 can be installed in a limited space inside the leg, the present application further provides another preferred embodiment of a fastening bolt installation tool, as shown in fig. 10 to 13, which includes a connecting portion 61 and a pulling rope 62, wherein the pulling rope 62 is connected to a first end of the connecting portion 61, and a second end of the connecting portion 61 can be detachably connected to the screwing portion 13 of the fastening bolt 1. When the rack is installed, the connecting part 61 penetrates through the threaded hole 310 of the rack base plate 300 to extend into the supporting leg, and is connected with the fastening bolt 1 to be installed at the port of the supporting leg; and then the pulling rope 62 is pulled outside the leg so that the pulling connection part 61 moves to the screw hole 310 together with the fastening bolt 1.

Specifically, the operator can insert the connecting portion 61 into the inside of the leg along the through hole 210 on the telescopic joint 21 of the leg through the threaded hole 310 of the rack base plate 300, and then the connecting portion 61 can fall to the port of the leg under the action of gravity or the operator can pull the connecting portion 61 to the port of the leg through a tool, and then the operator connects the connecting portion 61 with the fastening bolt 1 to be installed. Then, the operator can pull the pulling rope 62 outside the leg to move the connecting part 61 and the fastening bolt 1 together along the inside of the telescopic joint 21 of the leg to the threaded hole 310 to be installed through the pulling rope 62 until the screwing part 13 of the fastening bolt 1 extends out of the threaded hole 310; then, an operator rotates the screwing part 13 by using a tool such as a wrench until the fastening bolt 1 is in threaded fastening fit with the threaded hole 310 of the rack base plate 300; finally, the operator detaches and separates the connecting portion 61 from the fastening bolt 1 whose installation is completed, and repeats the above process at the next screw hole 310.

In the present embodiment, as shown in fig. 1, 10 and 11, the end surface of the screwing portion 13 of the fastening bolt 1 is provided with the connection hole 130, and the second end of the connection portion 61 is provided with the connection screw 610; therefore, the connecting part 61 can be in threaded connection with the connecting hole 130 of the screwing part 13 through the connecting screw 610, and the fastening bolt 1 and the connecting part 61 can be detachably connected. Meanwhile, in order to ensure that the connecting portion 61 can smoothly extend into the inside of the leg from the outside of the leg, the cross-sectional dimension of the connecting portion 61 needs to be equal to or smaller than the dimension of the threaded hole 310.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and such changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. A limited space fastening bolt, comprising: the screw rod section is arranged between the supporting part and the screwing part;

when the rack is installed, the fastening bolt penetrates through the pipe wall of the supporting leg and the rack base plate through the screwing part in the supporting leg; and then the screwing part is rotated outside the supporting leg, so that the screw section is screwed with the threaded hole in the rack substrate until the supporting part is propped against the inner wall of the supporting leg.

2. The limited space fastening bolt as defined in claim 1, wherein: the cross section size of the screwing part is smaller than that of the screw section; the cross section of the screwing part is a regular polygon; the cross section of the supporting part is circular or regular polygon.

3. The utility model provides a fastening bolt's installation frock which characterized in that includes:

a lifting assembly for carrying a fastening bolt according to claim 1 or 2; and

an operating assembly connected to the lift assembly; when the rack is installed, the operating assembly is suitable for driving the lifting assembly to perform a first process and a second process; wherein

The first process is as follows: the operation assembly is suitable for driving the lifting assembly to carry the fastening bolt to extend into the supporting leg until the fastening bolt is opposite to a threaded hole formed in the rack substrate;

a second process: the operating assembly is suitable for driving the lifting assembly to lift the fastening bolt until the screwing part penetrates through the pipe wall of the supporting leg and the threaded hole in the rack base plate.

4. The mounting tool for the fastening bolt according to claim 3, characterized in that: the lifting assembly comprises an upper sliding block and a lower sliding block; the upper sliding block and the lower sliding block are matched through a lifting structure; the operating assembly is respectively connected with the upper sliding block and the lower sliding block; the end surface of the upper sliding block is provided with a placing groove;

when the first process is carried out, the fastening bolt is placed in the placing groove and synchronously extends into the supporting leg along with the upper sliding block and the lower sliding block;

when the second process is carried out, the operating component is suitable for driving the lower sliding block to slide relative to the upper sliding block, so that the upper sliding block and the fastening bolt are lifted through the lifting structure.

5. The mounting tool for the fastening bolt according to claim 4, characterized in that: the lifting structure comprises an upper inclined surface and a lower inclined surface which are in sliding fit with each other; the upper inclined plane is arranged on the upper sliding block, and the lower inclined plane is arranged on the lower sliding block; so that, when the second process is performed, the lower slider is adapted to press the upper inclined surface by the lower inclined surface during sliding, so that the upper slider is lifted together with the fastening bolt.

6. The mounting tool for the fastening bolt according to any one of claims 3 to 5, characterized in that: the lifting assembly is provided with a positioning assembly; the positioning assembly is suitable for being in sliding fit with the inner wall of the supporting leg, so that in the first process, the projection of the fastening bolt in the pushing direction of the operating assembly is always aligned with the threaded hole.

7. The mounting tool for the fastening bolt according to claim 6, characterized in that: the positioning assembly comprises an upper guide rule, a lower guide rule and a fastener; the upper guide ruler and the lower guide ruler are parallel to each other and are slidably mounted on the lifting assembly; scales are arranged on the upper guide ruler and the lower guide ruler, so that the upper guide ruler and the lower guide ruler are adjusted according to the size of the supporting leg to be respectively matched with the inner walls of the supporting leg at two sides of the threaded hole; the fastener is suitable for fixing the upper guide ruler and the lower guide ruler after the adjustment is completed.

8. The mounting tool for the fastening bolt according to claim 4, characterized in that: the operating assembly comprises a pair of operating rods, and the two operating rods are respectively hinged with the upper sliding block and the lower sliding block; when the first process is carried out, the upper sliding block and the lower sliding block synchronously extend into the supporting leg through the operating rod; when the second process is carried out, the lower sliding block is suitable for sliding under the driving of one of the operating rods.

9. The mounting tool for the fastening bolt according to claim 8, characterized in that: the operating assembly further comprises at least one pair of connecting rods, and the connecting rods are detachably connected with the corresponding operating rods through the connecting assemblies, so that the distance of the lifting assembly extending into the supporting legs is increased in the first process.

10. The utility model provides a fastening bolt's installation frock which characterized in that includes:

a hauling rope; and

a connecting part, a first end of the connecting part is suitable for being connected with the traction rope, and a second end of the connecting part is suitable for being detachably connected with the screwing part of the fastening bolt shown in the claim 1 or 2;

when the rack is installed, the connecting part is suitable for extending into the supporting leg along the threaded hole of the rack base plate and is connected with the fastening bolt to be installed at the port of the supporting leg; and pulling the traction rope outside the supporting leg to drag the connecting part to move to the threaded hole together with the fastening bolt.