Limited space fastening bolt and installation tool thereof

Abstract

The application discloses a limited space fastening bolt, which comprises a supporting part, a screw rod segment and a screwing part, and the screw rod segment is arranged between the supporting part and the screwing part. When installing the rack, the screwing part can be extended out of the threaded hole of the rack base plate from the inside of the supporting leg, so that the operator can rotate and tighten the fastening bolt and the rack base plate outside the supporting leg, thereby improving the connection strength of the fastening bolt and facilitating the installation of the operator. The application further discloses a mounting tool for the fastening bolt, which can facilitate the installation of the fastening bolt in a limited narrow space.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric power engineering construction, in particular to a fastening bolt and an installation tool thereof. BACKGROUND

[0002] High-voltage transmission tower assembly construction by means of a tower assembling robot is a common construction method in overhead transmission line construction. The supporting leg of the tower assembling robot is of a telescopic structure according to construction needs; and a specific telescopic mode is driven by a gear and a rack, so that the rack needs to be fixed by means of a fastening bolt when the rack is installed.

[0003] In the prior art, in order to facilitate installation of the fastening bolt, a thread is directly tapped on the pipe wall of the supporting leg to install the fastening bolt. However, the pipe wall of the supporting leg is thin, and it is inconvenient to tap the thread, and the connection strength of the fastening bolt is not high. The thickness of the rack base plate is thick, and it is suitable to tap the thread; however, if the thread is tapped on the rack base plate, the fastening bolt needs to be penetrated from the inside of the supporting leg to the outside, and the fastening bolt needs to be rotated and fastened from the outside of the supporting leg, which makes the existing fastening bolt unable to meet the installation requirements. Therefore, there is an urgent need for a fastening bolt that can meet the installation requirements. SUMMARY

[0004] One of the purposes of the application is to provide a fastening bolt capable of improving the connection strength.

[0005] Another purpose of the application is to provide a tool capable of facilitating installation of the fastening bolt in a limited space.

[0006] To achieve the above purposes, the technical scheme adopted by the application is as follows: a fastening bolt in a limited space, comprising a supporting part, a screw rod segment and a screwing part, the screw rod segment is arranged between the supporting part and the screwing part; when the rack is installed, the fastening bolt penetrates the pipe wall of the supporting leg and the rack base plate through the screwing part in the inside of the supporting leg; and then the screwing part is rotated on the outside of the supporting leg, so that the screw rod segment is screwed with the threaded hole on the rack base plate, until the supporting part abuts against the inner wall of the supporting leg.

[0007] Preferably, the pipe wall of the supporting leg is provided with a through hole aligned with the threaded hole on the rack base plate; the cross-sectional dimension of the screwing part is smaller than the cross-sectional dimension of the screw rod segment, so that the screwing part can penetrate the through hole and the threaded hole in sequence when the rack is installed.

[0008] Preferably, the cross section of the screwing part is a regular polygon; and the cross section of the supporting part is a circle or a regular polygon.

[0009] The mounting tool for 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 rack is installed, the operating assembly is suitable for driving the lifting assembly to carry the fastening bolt to perform a first process and a second process; wherein the first process: the operating assembly is suitable for driving the lifting assembly to carry the fastening bolt to extend into the inside of the support leg until the fastening bolt is opposite to the threaded hole arranged on the rack base plate; the 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 support leg and the threaded hole on the rack base plate.

[0010] Preferably, 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 connected with the upper sliding block and the lower sliding block respectively; the end surface of the upper sliding block is provided with a placing groove; when the first process is performed, the fastening bolt is placed in the placing groove and extends into the inside of the support leg synchronously with the upper sliding block and the lower sliding block; when the second process is performed, the operating assembly is suitable for driving the lower sliding block to slide relative to the upper sliding block so as to lift the upper sliding block together with the fastening bolt through the lifting structure.

[0011] Preferably, the lifting structure comprises an upper inclined surface and a lower inclined surface which are matched through sliding; the upper inclined surface is arranged on the upper sliding block and the lower inclined surface is arranged on the lower sliding block; so that when the second process is performed, the lower sliding block is suitable for extruding the upper inclined surface through the lower inclined surface in the process of sliding so as to lift the upper sliding block together with the fastening bolt.

[0012] Preferably, the lifting structure further comprises a guide component which is matched with the upper sliding block and the lower sliding block respectively so as to make the upper sliding block and the lower sliding block not deviate from each other at all times.

[0013] Preferably, the guide component comprises a pair of guard plates which are fixedly installed on both sides of the upper sliding block and are matched with both sides of the lower sliding block through sliding so as to make the lower sliding block slide parallel to the guard plates in the second process.

[0014] Preferably, the lifting assembly is installed with a positioning assembly; the positioning assembly is suitable for sliding matching with the inner wall of the support leg so as to make the projection of the fastening bolt in the pushing direction of the operating assembly always opposite to the threaded hole in the first process.

[0015] Preferably, the positioning assembly comprises an upper guide ruler, a lower guide ruler and a fastener; the upper guide ruler and the lower guide ruler are slidably installed in parallel to each other on the lifting assembly; the upper guide ruler and the lower guide ruler are both provided with scales, so as to adjust the upper guide ruler and the lower guide ruler to be matched with the inner wall of the leg on both sides of the threaded hole according to the size of the leg; the fastener is adapted to fix the upper guide ruler and the lower guide ruler after adjustment.

[0016] 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, the ends of the two operating rods are correspondingly inserted into the mounting grooves and are hingedly connected; when the first process is performed, the upper sliding block and the lower sliding block are synchronously inserted into the inside of the leg through the operating rods; when the second process is performed, the lower sliding block is adapted to slide under the drive of one of the operating rods.

[0017] Preferably, the operating assembly further comprises at least one pair of connecting rods, the connecting rods are detachably connected to the corresponding operating rods through a connecting assembly, so that in the first process, the distance of the lifting assembly inserted into the leg is increased.

[0018] Preferably, the connecting assembly comprises an embedded nut member and an embedded bolt member; the embedded nut member and the embedded bolt member are correspondingly fixedly installed at the ends of the connecting rods and the operating rods, so that the connecting rods and the operating rods are connected through the embedded nut member and the embedded bolt member.

[0019] An installation tool of a fastening bolt, comprising a connecting part and a traction rope, the traction rope is connected with the first end of the connecting part, the second end of the connecting part is adapted to be detachably connected with the threaded part of the fastening bolt; when the installation of the rack is performed, the connecting part is adapted to be inserted into the inside of the 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 leg; and then the traction rope is pulled outside the leg, so as to drag the connecting part and the fastening bolt to move to the threaded hole.

[0020] Preferably, the end surface of the threaded part of the fastening bolt is provided with a connecting hole, the connecting part is adapted to be threadedly connected with the connecting hole through the connecting screw rod provided at the second end; and the cross-sectional dimension of the connecting part is less than or equal to the dimension of the threaded hole.

[0021] Compared with the prior art, the application has the following beneficial effects:

[0022] (1) the present application sets the screwing part in the front end of the screw rod section of the fastening bolt, and then when the rack is installed, compared with the traditional installation method, the fastening bolt of the present application can extend the screwing part from the inside of the support leg to the threaded hole, so that the operator can rotate and tighten the fastening bolt and the rack base plate outside the support leg; thereby improving the connection strength of the fastening bolt, and the operator can install conveniently.

[0023] (2) the present application also provides a tool for installing the fastening bolt in the limited narrow space inside the support leg, which can facilitate the operator to install the fastening bolt inside. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structural diagram of the fastening bolt in the present application.

[0025] Figure 2 It is the structural diagram of the rack installed in the support leg of the fastening bolt in the present application.

[0026] Figure 3 It is the structural diagram of the installation tool of the fastening bolt in the present application.

[0027] Figure 4 It is the exploded view of the lifting assembly of one embodiment of the installation tool in the present application.

[0028] Figure 5 It is the exploded view of the operation assembly of one embodiment of the installation tool in the present application.

[0029] Figure 6 It is the structural diagram of the installation tool of one embodiment of the present application carrying the fastening bolt into the inside of the support leg.

[0030] Figure 7 It is the lateral sectional view of the installation tool of one embodiment of the present application carrying the fastening bolt into the inside of the support leg.

[0031] Figure 8 It is the structural diagram of the installation tool of one embodiment of the present application carrying the fastening bolt into the inside of the support leg.

[0032] Figure 9 It is the structural diagram of the fastening bolt of the present application disengaging from one embodiment of the installation tool and being installed in the support leg.

[0033] Figure 10 It is the structural diagram of another embodiment of the installation tool in the present application.

[0034] Figure 11 It is the cooperation state diagram of another embodiment of the installation tool in the present application and the fastening bolt.

[0035] Figure 12 Figure 8 is a schematic view of a state of the installation tool of the present application carrying a fastening bolt extending into the inside of the leg.

[0036] Figure 13 Figure 9 is a schematic view of a structure of the installation tool of the present application pulling the fastening bolt against the side of the leg.

[0037] In the figure: fastening bolt 1, support part 11, screw rod section 12, screwing part 13, connecting hole 130, telescopic joint 21, through hole 210, rack base plate 300, threaded hole 310, lifting assembly 4, placing groove 400, installation groove 401, upper sliding block 41, sliding groove 410, upper inclined surface 411, lower sliding block 42, lower inclined surface 421, guard plate 43, positioning assembly 44, upper guide ruler 441, lower guide ruler 442, fastener 443, operation assembly 5, operation lever 51, rotating part 52, connecting rod 53, connecting assembly 54, embedded nut part 541, embedded bolt part 542, connecting part 61, connecting screw rod 610, traction rope 62. DETAILED DESCRIPTION

[0038] Hereinafter, the present application will be further described in conjunction with specific embodiments, and it should be noted that, without conflict, the following described embodiments or technical features can be combined in any manner to form new embodiments.

[0039] In the description of the present application, it should be noted that, for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0041] One aspect of the present application provides a limited space fastening bolt 1, such as Figure 1 and Figure 2One preferred embodiment is shown in the figure, which includes a support part 11, a screw rod segment 12 and a screwing part 13. The screw rod segment 12 is arranged between the support part 11 and the screwing part 13; when installing the rack, the fastening bolt 1 can pass through the pipe wall of the leg and the rack base plate 300 via the screwing part 13 inside the leg; then, the screwing part 13 can be rotated outside the leg, so that the screw rod segment 12 is screwed with the threaded hole 310 on the rack base plate 300 until the support part 11 abuts against the inner wall of the leg.

[0042] It can be understood that the conventional bolt mainly includes a screw rod and a hexagonal head; thus, when installing the rack, if the conventional bolt is used, the bolt needs to pass through the rack base plate 300 from the outside of the leg and be screwed with the pipe wall of the leg; thus, the thin pipe wall can cause insufficient connection strength of the conventional bolt.

[0043] However, the fastening bolt 1 of the present application is connected with the screwing part 13 at the front end of the screw rod segment 12. When installing the rack, the fastening bolt 1 passes through the screwing part 13 inside the leg to the outside, so that the operator can screw the fastening bolt 1 outside the leg via the screwing part 13, so that the screw rod segment 12 of the fastening bolt 1 is screwed and connected with the rack base plate 300. Thus, the installation strength of the rack base plate 300 is ensured by the connection strength of the fastening bolt 1, and the screwing installation can be conveniently performed by the operator via the outwardly extending screwing part 13.

[0044] In the embodiment, as shown in Figure 2 and Figure 6 The leg mainly includes an expansion joint 21 in the form of a square tube and a base joint (not shown); the rack is located between the expansion joint 21 and the base joint and is fixedly installed on the outer wall of the expansion joint 21; thus, the expansion joint 21 and the base joint are expanded and contracted via the gear and rack structure. Meanwhile, the rack includes a rack base plate 300 and rack segments arranged on both sides of the rack base plate 300 in the extending direction; thus, the threaded hole 310 is arranged on the light plate segment between the rack base plate 300 and the two rack segments to avoid interference with the rack segments. When installing the rack, the rack is first fixedly installed on the expansion joint 21, and then the expansion joint 21 is installed together with the rack and the base joint.

[0045] Specifically, as shown in Figure 2As shown in the figure, the pipe wall of the telescopic section 21 of the support 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 to ensure that the screw rod segment 12 can pass through the through hole 210 smoothly; the cross-sectional size of the screwing part 13 is smaller than the cross-sectional size of the screw rod segment 12, so that when the rack is installed, the screwing part 13 can pass through the through hole 210 and the threaded hole 310 in sequence. At the same time, the diameter of the through hole 210 is smaller than the cross-sectional size of the supporting part 11, so as to ensure that the supporting part 11 can abut against the inner wall of the telescopic section 21 stably.

[0046] In the embodiment, as shown in the figure, the cross section of the screwing part 13 is a regular polygon; the cross section of the supporting part 11 is a circle or a regular polygon. Figure 1

[0047] It can be understood that the operator drives the screwing part 13 to screw the screw rod segment 12 and the threaded hole 310, and the screwing part 13 is actually equivalent to the head of a conventional bolt, so the cross section of the screwing part 13 can be square, hexagonal and the like, so as to facilitate the screwing part 13 to be driven by a wrench or other tools with similar functions; in order to facilitate processing, the cross-sectional shape of the screwing part 13 in the application is preferably square. The supporting part 11 only serves to abut and support, so the cross section of the supporting part 11 can be any shape such as a circle and a regular polygon, as long as the cross-sectional size is greater than the diameter of the through hole 210; however, in order to facilitate the processing of the supporting part 11, the cross section of the supporting part 11 in the application is preferably circular.

[0048] The fastening bolt 1 described above needs to be installed from the limited and narrow space inside the telescopic section 21 of the support leg, and the conventional installation method cannot be used.

[0049] In order to ensure that the fastening bolt 1 described above can be installed in the limited space inside the support leg, another aspect of the application provides an installation tool for a fastening bolt, as shown in the figure. Figures 3 to 9 ​As shown in the figure, one preferred embodiment includes a lifting assembly 4 and an operating assembly 5; the lifting assembly 4 is used to carry the fastening bolt 1 described above; the operating assembly 5 is connected with the lifting assembly 4. When installing the rack, the operating assembly 5 can drive the lifting assembly 4 to carry the fastening bolt 1 to perform the installation process including a first process and a second process; in the first process, the operating assembly 5 can drive the lifting assembly 4 to carry the fastening bolt 1 to extend into the inside of the telescopic section 21 of the support leg until the fastening bolt 1 is opposite to the threaded hole 310 provided on the rack base plate 300; in the second process, the operating assembly 5 can drive the lifting assembly 4 to lift the fastening bolt 1 until the threaded part 13 penetrates through the pipe wall of the support leg and the threaded hole 310 on the rack base plate 300. Subsequently, the operator can perform the screwing operation on the threaded part 13 of the fastening bolt 1 from the outside of the telescopic section 21 by using a tool, so that the fastening bolt 1 fixes the rack base plate 300 and the telescopic section 21, and in this process, the lifting assembly 4 remains in the lifted state; after the fastening bolt 1 completes the installation of the rack, the operating assembly 5 can pull out the lifting assembly 4 to the outside of the telescopic section 21, and carry the fastening bolt 1 again to perform the next installation process.

[0050] In this embodiment, as shown in the figure, Figure 4 and Figures 7 to 9 the lifting assembly 4 includes an upper sliding block 41 and a lower sliding block 42; the upper sliding block 41 and the lower sliding block 42 are cooperated by a lifting structure; the operating assembly 5 is connected with the upper sliding block 41 and the lower sliding block 42 respectively; the end face of the upper sliding block 41 is provided with a placing groove 400, which can be used to place the fastening bolt 1 to be installed. When performing the first process, the fastening bolt 1 to be installed is placed in the placing groove 400, and under the pushing of the operating assembly 5, it is extended into the inside of the support leg synchronously with the upper sliding block 41 and the lower sliding block 42. When performing the second process, the operating assembly 5 can drive the lower sliding block 42 to slide relative to the upper sliding block 41, so that the upper sliding block 41 together with the fastening bolt 1 is lifted by the lifting structure until the threaded part 13 penetrates through the pipe wall of the support leg and the threaded hole 310 on the rack base plate 300.

[0051] It can be understood that the cross-sectional shape of the placing groove 400 is adapted to the cross-sectional shape of the supporting part 11, i.e. circular, and the depth of the placing groove 400 only needs to satisfy the length of the supporting part 11.

[0052] In this embodiment, the specific structure of the lifting structure has various forms, one commonly used structure is as shown in the figure, Figure 4 and Figures 7 to 9As shown, the lifting structure comprises an upper inclined surface 411 and a lower inclined surface 421 which are in sliding cooperation with each other; the upper inclined surface 411 is arranged on the upper sliding block 41, and the lower inclined surface 421 is arranged on the lower sliding block 42. Thus, when the second process is performed, the lower sliding block 42 can extrude the upper inclined surface 411 through the lower inclined surface 421 during the sliding process driven by the operating assembly 5, so as to lift the upper sliding block 41 together with the fastening bolt 1.

[0053] It can be understood that the lower sliding block 42 can slide to extrude the upper sliding block 41 under the pulling or pushing of the operating assembly 5; the specific sliding direction of the lower sliding block 42 can be determined according to the inclination direction of the upper inclined surface 411 and the lower inclined surface 421. For example Figures 7 to 9 As shown, the lower sliding block 42 can slide to extrude the upper sliding block 41 under the pulling of the operating assembly 5 to lift the fastening bolt 1.

[0054] In this embodiment, as shown in Figure 4 and Figure 6 , the lifting structure further comprises a guide component which cooperates with the upper sliding block 41 and the lower sliding block 42 respectively, so that the upper sliding block 41 and the lower sliding block 42 do not deviate from each other at all times.

[0055] It can be understood that during the process that the upper sliding block 41 and the lower sliding block 42 extend into the telescopic section 21, and during the process that the lower sliding block 42 slides relative to the upper sliding block 41, the upper sliding block 41 and the lower sliding block 42 can deviate from each other vertically to the extension direction or the sliding direction, so that the upper sliding block 41 and the lower sliding block 42 have the risk of mutual disengagement. Therefore, by arranging the guide component, the upper sliding block 41 and the lower sliding block 42 can be kept relatively stationary in the first process of extending into the telescopic section 21, and the lower sliding block 42 can only slide parallel to the extension direction in the second process.

[0056] Specifically, the structure of the guide component has various forms, including but not limited to the following two forms.

[0057] Structure one: as shown in Figure 4 and Figure 6 , the guide component comprises a pair of guard plates 43, and the two guard plates 43 are fixedly installed on the two sides of the upper sliding block 41 and are in sliding cooperation with the 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 in the first process of extending into the telescopic section 21, and the lower sliding block 42 slides parallel to the guard plates 43 in the second process.

[0058] Structure two: the guiding component includes a T-shaped sliding groove and a T-shaped sliding block which are engaged with each other; the T-shaped sliding groove and the T-shaped sliding block are arranged on the upper inclined surface 411 and the lower inclined surface 421 respectively; thus, the engagement of the T-shaped sliding groove and the T-shaped sliding block can ensure that the upper sliding block 41 and the lower sliding block 42 remain relatively stationary and extend into the interior of the telescopic section 21 in the first process, and the lower sliding block 42 slides parallel to the extension direction in the second process.

[0059] It can be understood that, for structure one, the overall structure is simple, convenient to process and install; and for structure two, the processing is more difficult, and the friction between the T-shaped sliding groove and the T-shaped sliding block is large in the second process, which makes the operation more difficult. Therefore, in the present application, the structure of the guiding component is preferably structure one.

[0060] One of the embodiments of the present application is shown in Figure 4 and Figure 6 The lifting assembly 4 is also provided with a positioning assembly 44; the positioning assembly 44 can be slidably fitted with the inner wall of the telescopic section 21 of the leg, so that in the first process, the projection of the fastening bolt 1 in the pushing direction of the operating assembly 5 is always perpendicular to the threaded hole 310.

[0061] It can be understood that, when installing the fastening bolt 1, the size of the upper sliding block 41 and the lower sliding block 42 is usually smaller than the cross-sectional size of the telescopic section 21, so that the upper sliding block 41 and the lower sliding block 42 can smoothly extend into the interior of the telescopic section 21. Thus, there will be a clearance between the two sides of the upper sliding block 41 and the lower sliding block 42 and the two sides of the telescopic section 21, so that in the first process and the second process, the whole formed by the upper sliding block 41, the lower sliding block 42 and the guard plate 43 can be offset to the side, which can cause the carried fastening bolt 1 to be unable to align with the threaded hole 310, making the installation process difficult. Therefore, by providing the positioning assembly 44, it can be ensured that in the first process and the second process, the projection of the fastening bolt 1 in the pushing direction of the operating assembly 5 is always perpendicular to the threaded hole 310.

[0062] In the present embodiment, as shown in Figure 4 and Figure 6 The positioning assembly 44 includes an upper guide ruler 441, a lower guide ruler 442 and a fastener 443; the upper guide ruler 441 and the lower guide ruler 442 are slidably installed in the lifting assembly 4 in parallel with each other. The upper guide ruler 441 and the lower guide ruler 442 are both provided with scales, so that the upper guide ruler 441 and the lower guide ruler 442 can be adjusted according to the size of the leg to be fitted with the inner wall of the telescopic section 21 on both sides of the threaded hole 310; the fastener 443 can fix the upper guide ruler 441 and the lower guide ruler 442 after adjustment.

[0063] Specifically, the end face of the upper sliding block 41 is provided with a sliding groove 410 perpendicular to the driving direction of the operation assembly 5; the upper guide ruler 441 and the lower guide ruler 442 are slidingly installed in the sliding groove 410 in a superimposed manner, so that the upper guide ruler 441 and the lower guide ruler 442 are adjusted in size by sliding along the sliding groove 410.

[0064] It can be understood that the fastening bolt 1 is placed on the upper sliding block 41, and in both the first process and the second process, it is only necessary to ensure that the upper sliding block 41 does not deviate to the side, so the positioning assembly 44 is installed on the end face of the upper sliding block 41. At the same time, in order to avoid the thickness of the upper guide ruler 441 and the lower guide ruler 442 affecting the lifting height of the upper sliding block 41, the upper guide ruler 441 and the lower guide ruler 442 can be installed by setting the sliding groove 410. The fastener 443 is a prior art, and a common fastener 443 is a bolt.

[0065] One of the embodiments of the present application, as shown in Figures 4 to 9 The operation assembly 5 includes a pair of operation rods 51, and the two operation rods 51 are respectively hinged with the upper sliding block 41 and the lower sliding block 42 through the ends. Thus, when the first process is performed, the upper sliding block 41 and the lower sliding block 42 can be synchronously inserted into the inside of the telescopic section 21 of the support leg through the operation rod 51; and when the second process is performed, the lower sliding block 42 can be driven to slide by one of the operation rods 51 hinged with the lower sliding block 42; and then the upper sliding block 41 together with the carried fastening bolt 1 is lifted.

[0066] Specifically, as shown in Figures 4 to 9 The upper sliding block 41 and the lower sliding block 42 are both provided with a mounting groove 401, and the ends of the two operation rods 51 are inserted into the inside of the mounting groove 401 and are hinged through a rotating piece 52.

[0067] It can be understood that the installation of the mounting groove 401 can increase the support strength of the operation rod 51. At the same time, by hinging the operation rod 51 with the upper sliding block 41 and the lower sliding block 42, the installation and disassembly of the operation rod 51 can be facilitated. The rotating piece 52 is a prior art, and a common rotating piece 52 is a bolt with a light rod.

[0068] It should be known that the length of the support leg is generally several meters long, and the length of the rack corresponds to the length of the support leg, and in order to ensure the installation strength of the rack, the rack needs to be installed at multiple points. That is, a fastening bolt 1 needs to be fixedly installed every interval of a set distance on the rack base plate 300. For the positions close to the end of the support leg, the lifting assembly 4 only needs to be inserted through the operation rod 51; and as the distance of the threaded hole 310 on the rack base plate 300 gradually increases, the length of the operation rod 51 cannot meet the requirement.

[0069] Therefore, in order to ensure that the operating assembly 5 can install the fastening bolt 1 on the threaded hole 310 with any distance, as shown in the figure, the operating assembly 5 further comprises at least one pair of connecting rods 53, which are detachably connected with the corresponding operating rod 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 leg can be increased through the connection of the connecting rod 53 and the operating rod 51. Figure 5

[0070] It can be understood that the end of each operating rod 51 can be continuously connected with multiple connecting rods 53, and the adjacent connecting rods 53 are also detachably connected through the connecting assembly 54. Through the detachable connection mode, when the fastening bolt 1 is installed on the threaded hole 310 with a shorter distance, the length of the operating assembly 5 can be prevented from being too long and inconvenient to operate.

[0071] In the embodiment, as shown in the figure, Figure 5 the connecting assembly 54 comprises an embedded nut part 541 and an embedded bolt part 542; for the convenience of description, taking the connection between the operating rod 51 and the connecting rod 53 as an example; the embedded nut part 541 and the embedded bolt part 542 are fixedly installed on the end of the connecting rod 53 and the operating rod 51, so that the connecting rod 53 and the operating rod 51 are detachably connected through the embedded nut part and the embedded bolt part 542.

[0072] For the convenience of understanding, the installation process of the fastening bolt 1 will be described in detail below.

[0073] (1) Measure the distance D between the two sides of the telescopic joint 21, so that according to the width d of the upper sliding block 41, the adjustment distance of the upper guide ruler 441 and the lower guide ruler 442 to the two sides can be obtained as (D-d) / 2; then according to the scale on the upper guide ruler 441 and the lower guide ruler 442, adjust the upper guide ruler 441 and the lower guide ruler 442 to the corresponding positions on the two sides, and fix them through the fastener 443 after the adjustment is completed.

[0074] (2) Place the fastening bolt 1 to be installed in the placement groove 400 on the end face of the upper sliding block 41.

[0075] (3) First process: as shown in the figure, Figure 7 the operator extends the upper sliding block 41 carrying the fastening bolt 1 and the lower sliding block 42 into the inside of the telescopic joint 21 through the operating rod 51. During the movement of the upper sliding block 41 and the lower sliding block 42, the lower end face of the lower sliding block 42 slides against the inner wall of the upper through hole 210 of the telescopic joint 21; at the same time, the ends of the upper guide ruler 441 and the lower guide ruler 442 slide against the inner walls of the two sides of the upper through hole 210 of the telescopic joint 21, respectively. Until the axis of the fastening bolt 1 coincides with the axis of the threaded hole 310 to be installed. ​

[0076] (4) The second process: as shown in Figure 8 , the operator holds the operating rod 51 connected with the upper slider 41; at the same time, the lower slider 42 is pulled back through the operating rod 51 connected with the lower slider 42, so that the lower slider 42 extrudes the upper inclined surface 411 through the lower inclined surface 421, and then drives the upper slider 41 to lift together with the fastening bolt 1, until the threaded 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.

[0077] (5) as shown in Figure 9 , then, the operator can rotate the threaded part 13 from the outside of the telescopic joint 21 through wrench or other tools, so that the screw rod segment 12 of the fastening bolt 1 and the corresponding threaded hole 310 are screwed, until the support part 11 abuts against the inner wall of the telescopic joint 21.

[0078] (6) after the installation of the fastening bolt 1 is completed, the upper slider 41 can be slightly lowered, and then pulled out of the inside of the telescopic joint 21 together with the lower slider 42. Then, a new fastening bolt 1 is placed to install the next threaded hole 310.

[0079] (7) as the distance of the threaded hole 310 to be installed increases, the connecting rod 53 can be connected with the operating rod 51 through the connecting assembly 54 to increase the extension distance of the lifting assembly 4.

[0080] It can be understood that the direction of the dashed arrow in Figure 8 and Figure 9 is the moving direction of the corresponding parts.

[0081] In order to ensure that the above fastening bolt 1 can be installed in the limited space inside the support leg, the application also provides another preferred embodiment of the installation tool of the fastening bolt, as shown in Figures 10 to 13 , including a connecting part 61 and a traction rope 62, the traction rope 62 is connected with the first end of the connecting part 61, and the second end of the connecting part 61 can be detachably connected with the threaded part 13 of the above-mentioned fastening bolt 1. Thus, when installing the rack, the connecting part 61 is inserted into the inside of the support leg through the threaded hole 310 of the rack base plate 300, and is connected with the fastening bolt 1 to be installed at the port of the support leg; then the traction rope 62 is pulled outside the support leg to drag the connecting part 61 and the fastening bolt 1 to move to the threaded hole 310.

[0082] Specifically, the operator can pass the connecting part 61 through the threaded hole 310 of the rack base plate 300 along the through hole 210 on the telescopic section 21 of the leg into the inside of the leg, and then the connecting part 61 can fall to the port of the leg under the action of gravity or the operator pulls the connecting part 61 to the port of the leg by a tool, and then the operator connects the connecting part 61 with the fastening bolt 1 to be installed. Then the operator can pull the traction rope 62 outside the leg to move the connecting part 61 along with the fastening bolt 1 inside the telescopic section 21 of the leg to the threaded hole 310 to be installed by the traction of the traction rope 62, until the threaded part 13 of the fastening bolt 1 protrudes from the threaded hole 310; then the operator rotates the threaded part 13 by a wrench or the like until the fastening bolt 1 is threadedly fastened with the threaded hole 310 of the rack base plate 300; finally, the operator disassembles and separates the connecting part 61 and the installed fastening bolt 1, and repeats the above process at the next threaded hole 310.

[0083] In the embodiment, as shown in Figure 1 、 Figure 10 and Figure 11 , the end surface of the threaded part 13 of the fastening bolt 1 is provided with a connecting hole 130, and the second end of the connecting part 61 is provided with a connecting screw 610; so that the connecting part 61 can be threadedly connected with the connecting hole 130 of the threaded part 13 through the connecting screw 610, thereby realizing the detachable connection of the fastening bolt 1 and the connecting part 61. At the same time, in order to ensure that the connecting part 61 can smoothly enter the inside of the leg from the outside of the leg, the cross-sectional dimension of the connecting part 61 needs to be less than or equal to the dimension of the threaded hole 310.

[0084] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A fixture for installing a fastening bolt, the fastening bolt comprising a support portion, a threaded section, and a screw-in portion, the threaded section being disposed between the support portion and the screw-in portion; the cross-sectional dimension of the screw-in portion being smaller than the cross-sectional dimension of the threaded section; the cross-section of the screw-in portion being a square or a regular hexagon; the cross-section of the support portion being a circle or a regular polygon; characterized in that, include: A lifting assembly for carrying the fastening bolt; as well as An operating component, which is connected to the lifting component; When the rack is installed, the operating component is adapted to drive the lifting component to perform a first process and a second process; in First process: The operating component is adapted to drive the lifting component to carry the fastening bolt into the interior of the outrigger until the fastening bolt is aligned with the threaded hole provided on the rack base plate; Second process: The operating component is adapted to drive the lifting component to lift the fastening bolt until the screw-in part passes through the tube wall of the leg and the threaded hole on the rack base plate; The lifting assembly includes an upper slider and a lower slider; the upper slider and the lower slider cooperate with each other through a lifting structure; the operating assembly is connected to the upper slider and the lower slider respectively; the end face of the upper slider is provided with a placement groove; During the first process, the fastening bolt is placed in the placement groove and extends into the interior of the support leg synchronously with the upper slider and the lower slider; When the second process is performed, the operating component is adapted to drive the lower slider to slide relative to the upper slider so that the upper slider together with the fastening bolt is lifted by the lifting structure; The lifting structure includes an upper inclined surface and a lower inclined surface that slide against each other; the upper inclined surface is disposed on the upper slider and the lower inclined surface is disposed on the lower slider; thus, during the second process, the lower slider is adapted to press the upper inclined surface through the lower inclined surface during the sliding process, so that the upper slider together with the fastening bolt is lifted. The lifting assembly is equipped with a positioning assembly; the positioning assembly is adapted to slide against the inner wall of the outrigger so that, during the first process, the projection of the fastening bolt in the pushing direction of the operating assembly is always directly opposite the threaded hole. The positioning component includes an upper guide ruler, a lower guide ruler, and fasteners; the upper guide ruler and the lower guide ruler are slidably mounted parallel to each other on the lifting component; both the upper guide ruler and the lower guide ruler are provided with scales so that the upper guide ruler and the lower guide ruler can be adjusted to fit the inner walls of the support legs on both sides of the threaded hole according to the size of the support legs; the fasteners are suitable for fixing the upper guide ruler and the lower guide ruler after adjustment.

2. The installation fixture for fastening bolts as described in claim 1, characterized in that: The operating assembly includes a pair of operating levers, which are respectively hinged to the upper slider and the lower slider. During the first process, the upper slider and the lower slider extend synchronously into the interior of the support leg via the operating levers. During the second process, the lower slider is adapted to slide under the drive of one of the operating levers.

3. The installation fixture for fastening bolts as described in claim 2, characterized in that: The operating assembly also includes at least one connecting rod, which is detachably connected to the corresponding operating rod via a connecting assembly, thereby increasing the distance the lifting assembly extends into the outrigger during the first process.

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