Movable crawler chassis structure

Abstract

The invention relates to the field of overhead distribution line grounding equipment, in particular to a mobile crawler chassis structure, which comprises a main frame mechanism, a chassis frame and crawlers symmetrically arranged on two side walls of the chassis frame, the tensioning mechanism comprises a transmission part fixed to the outer wall of the chassis frame and a tensioning wheel rotationally arranged on the transmission part, and the tensioning wheel makes contact with the inner surface of the crawler belt; the transmission part comprises a fixing plate fixed to the outer wall of the chassis frame and supporting rods rotationally connected to the fixing plate, the number of the supporting rods is two, the two supporting rods are symmetrically arranged on the fixing plate, and the supporting rods are in a V shape. Through mutual cooperation of the main frame mechanism, the tensioning mechanism and the adjusting mechanism, the situation that the crawler derails and the crawler slides when the crawler passes through an uneven road section can be reduced, and the crawler can be replaced more conveniently and rapidly.

Description

Technical Field

[0001] The invention relates to the field of overhead power distribution line grounding equipment, in particular to a mobile crawler chassis structure. Background Art

[0002] Overhead distribution line grounding is the most common work in the distribution network. All power outage maintenance work on the distribution overhead lines must be grounded on the corresponding lines. When performing overhead distribution line grounding work, the free-climbing frame is usually moved by a lightweight crawler trolley. The crawler material of the lightweight crawler trolley is mostly rubber, which causes a high degree of wear on the crawler during operation. The work of disassembling and replacing the crawler is relatively heavy, which will greatly consume the labor of the staff and greatly reduce the progress of the replacement work. When the existing lightweight crawler trolley passes through uneven sections, the crawler track is easy to become loose and derailed, causing the trolley to be unable to move. When the trolley passes through uneven sections, the crawler track cannot provide good friction and is easy to slide, which also makes the trolley unable to move. Summary of the invention

[0003] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0004] Therefore, the object of the present invention is to provide a mobile crawler chassis structure, which can solve the problems of crawler derailment and crawler sliding when the existing crawler vehicle passes through uneven road sections and the problem of troublesome crawler replacement.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a mobile crawler chassis structure, which includes a main frame mechanism, which includes a chassis frame, and crawlers symmetrically arranged on the two side walls of the chassis frame; a tensioning mechanism, which includes a transmission member fixed on the outer wall of the chassis frame, and a tensioning wheel rotatably arranged on the transmission member, and the tensioning wheel contacts the inner surface of the crawler; the transmission member includes a fixed plate fixed on the outer wall of the chassis frame, and a support rod rotatably connected to the fixed plate, the support rod has two groups, the two groups of support rods are symmetrically arranged on the fixed plate, and the support rod is in a "V" shape.

[0006] As a preferred solution of the mobile crawler chassis structure described in the present invention, the transmission member also includes a hydraulic rod with two ends respectively fixed on the upper part of the two groups of support rods, and a spring sleeved on the outside of the hydraulic rod, and the tensioning wheel is rotatably arranged at the lower part of the two groups of support rods.

[0007] As a preferred solution of the mobile crawler chassis structure described in the present invention, the main frame mechanism also includes a driving wheel arranged on the inner side of the crawler track, a guide wheel and a supporting wheel arranged below the driving wheel, and a traction wheel arranged above the supporting wheel.

[0008] As a preferred solution of the mobile crawler chassis structure of the present invention, the tensioning mechanism is arranged between the guide wheel and the supporting wheel; and there are no less than three groups of traction wheels.

[0009] As a preferred solution of the mobile crawler chassis structure of the present invention, it also includes: an adjustment mechanism, which includes a push rod assembly symmetrically arranged on both side walls of the chassis frame, and a lifting assembly arranged on the push rod assembly.

[0010] As a preferred solution of the mobile crawler chassis structure described in the present invention, the push rod assembly includes a first support plate fixed on the chassis frame, an electric push rod arranged on the side wall of the first support plate, a telescopic rod fixedly connected to the output end of the electric push rod, and a rack fixed at the end of the telescopic rod.

[0011] As a preferred solution of the mobile crawler chassis structure described in the present invention, the lifting assembly includes a second support plate fixed on the side wall of the chassis frame, a fixing rod fixed on the side wall of the second support plate and extending to the other side of the rack, a fixing ring fixed on the end of the fixing rod, and a limit block fixed on the inner wall of the fixing ring.

[0012] As a preferred solution of the mobile crawler chassis structure described in the present invention, a threaded ring is slidably arranged in the fixed ring, the lower part of the threaded ring is fixed to the upper part of the gear, and the inner wall of the threaded ring is threadedly connected to the threaded rod; the threaded rod is slidably arranged in the fixed ring.

[0013] As a preferred solution of the mobile crawler chassis structure of the present invention, a limiting groove is provided on the side wall of the threaded rod, and the limiting block is slidably disposed in the limiting groove.

[0014] As a preferred solution of the mobile crawler chassis structure of the present invention, the lifting assembly further comprises an adjusting bracket fixed to the lower part of the threaded rod, and a plurality of groups of the traction wheels are rotatably fixed to the side wall of the adjusting bracket.

[0015] The beneficial effects of the present invention are as follows: the mobile crawler chassis structure described in the present invention, through the cooperation of the main frame mechanism, the tensioning mechanism and the adjustment mechanism, can not only reduce the derailment and crawler sliding of the crawler when passing through uneven sections, but also make the replacement of the crawler more convenient.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) The present invention sets an adjustment mechanism, specifically, starts an electric push rod to drive the telescopic rod to move. When the telescopic rod moves, it drives the gear to rotate through the rack. When the gear drives the threaded rod to move downward, the adjustment bracket drives a plurality of supporting wheels to move downward through the threaded rod. At this time, the supporting force of the plurality of supporting wheels on the crawler track is reduced, so that the crawler track is in a relaxed state. At this time, it is convenient to remove and replace the crawler track, which greatly improves the progress of the replacement work and greatly reduces the workload of the staff.

[0018] (2) The present invention sets a limit block, which drives the gear to rotate when the rack moves. At this time, the threaded rod moves up or down due to the action of the limit block. When the threaded rod moves upward, it drives a plurality of supporting wheels to move upward through the adjusting bracket. The upward movement of a plurality of supporting wheels increases the tensioning degree of the track, greatly improving the load-bearing capacity of the track. The supporting force of a plurality of supporting wheels can be adjusted, which greatly improves the applicability of the track and the practicability of the equipment.

[0019] (3) The present invention provides a tensioning mechanism. Specifically, when the crawler track is traveling on an uneven road section, the crawler track will follow an undulating motion trajectory. At this time, the tensioning wheel is acted upon by the crawler track force and drives the hydraulic rod through the support rod to squeeze the spring. At this time, the spring will produce a certain rebound force and drive the tensioning wheel to reset. The tensioning wheel automatically resets itself to avoid derailment caused by excessive loosening of the crawler track. At the same time, the pressure and friction of the crawler track on the uneven ground are increased, thereby improving the passability of the equipment, further improving the practicability of the equipment, reducing the derailment and maintenance during work, and greatly improving the work progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the crawler structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the tension wheel structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the adjusting bracket of the present invention;

[0025] Figure 5 It is a schematic diagram of the telescopic rod structure of the present invention;

[0026] Figure 6 For the present invention Figure 5 A is a schematic diagram of the enlarged structure of the middle part;

[0027] Figure 7 It is a schematic diagram of the rack structure of the present invention;

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of B. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] Example 1

[0033] Reference Figures 1 to 7 , is the first embodiment of the present invention, which provides a mobile crawler chassis structure, specifically including, a main frame mechanism 100, which includes a chassis frame 101, and crawlers 102 symmetrically arranged on both side walls of the chassis frame 101; a tensioning mechanism 200, which includes a transmission member 201 fixed on the outer wall of the chassis frame 101, and a tensioning wheel 202 rotatably arranged on the transmission member 201, and the tensioning wheel 202 contacts the inner surface of the crawler 102; the transmission member 201 includes a fixed plate 201a fixed on the outer wall of the chassis frame 101, and a support rod 201b rotatably connected to the fixed plate 201a, the support rod 201b has two groups, the two groups of support rods 201b are symmetrically arranged on the fixed plate 201a, and the support rod 201b is "V" shaped.

[0034] Furthermore, the transmission member 201 also includes a hydraulic rod 201c with two ends respectively fixed on the upper part of the two groups of support rods 201b, and a spring 201d sleeved on the outside of the hydraulic rod 201c, and the tensioning wheel 202 is rotatably arranged at the lower part of the two groups of support rods 201b.

[0035] It should be noted that the spring 201d provides elastic force to the hydraulic rod 201c, so that the hydraulic rod 201c can maintain the maximum extension state without being subjected to other external forces.

[0036] Furthermore, the main frame mechanism 100 also includes a driving wheel 103 arranged on the inner side of the crawler track 102 , a guide wheel 104 and a supporting wheel 105 arranged below the driving wheel 103 , and a traction wheel 106 arranged above the supporting wheel 105 .

[0037] It should be noted that when the driving wheel 103 rotates, the driving wheel 103 will drive the track 102 to rotate. At this time, when the track 102 rotates, it will drive the guide wheel 104 to rotate. At the same time, the supporting wheel 105 and the traction wheel 106 will rotate together through the rotation of the track 102, thereby realizing the overall movement of the mobile track chassis structure.

[0038] Preferably, the tensioning mechanism 200 is disposed between the guide wheel 104 and the supporting wheel 105; and the number of the traction wheels 106 is no less than three.

[0039] It should be noted that the multiple sets of traction wheels 106 can balance the forces on the crawler 102 and avoid a reduction in the service life of the crawler 102 due to local forces.

[0040] In this embodiment, when the equipment encounters an uneven road surface during movement, the bottom of the track 102 will be moved. At this time, the track 102 will exert a force on the tensioning wheel 202. The tensioning wheel 202 will drive the support rod 201b to move under the force. At the same time, the support rod 201b rotates with the connection point with the fixed plate 201a as the axis point, thereby squeezing the hydraulic rod 201c; the spring 201d will buffer the contraction of the hydraulic rod 201c, thereby providing a certain buffer for the support rod 201b to prevent the equipment from being damaged by the force.

[0041] It should be noted that when the spring 201d is squeezed, the spring 201d will shrink and accumulate force. After the track 102 passes through an uneven road surface, the spring 201d that shrinks and accumulates force will squeeze the hydraulic rod 201c to reset it, and the hydraulic rod 201c will reset the tensioning wheel 202 through the support rod 201b. Under the resetting effect of the tensioning wheel 202, the passability of the track 102 when passing through an uneven section is greatly increased. At the same time, the tensioning degree of the track 102 can be restored after passing through the uneven section, thereby avoiding the derailment of the track 102.

[0042] It should also be noted that when the ground protrusion is between the two tensioning wheels 202 of the tensioning mechanism 200, the elastic force provided by the spring 201d will not only tension the track 102, but also cause the track 102 to provide oblique downward pressure on the ground protrusion. At this time, the track 102 that is squeezed and concave by the ground protrusion not only increases its contact area with the ground, but also the pressure between the ground protrusion and the track 102 will also increase under the elastic force of the spring 201d, which can increase the friction between the track 102 and the ground, thereby greatly increasing the passability of the track 102.

[0043] Example 2

[0044] Reference Figures 1 to 8 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0045] Specifically, the mobile crawler chassis structure further includes: an adjusting mechanism 300 , which includes a push rod assembly 301 symmetrically arranged on both side walls of the chassis frame 101 , and a lifting assembly 302 arranged on the push rod assembly 301 .

[0046] Furthermore, the push rod assembly 301 includes a first support plate 301a fixed on the chassis frame 101, an electric push rod 301b arranged on the side wall of the first support plate 301a, a telescopic rod 301c fixedly connected to the output end of the electric push rod 301b, and a rack 301d fixed to the end of the telescopic rod 301c.

[0047] Furthermore, the lifting assembly 302 includes a second support plate 302a fixed on the side wall of the chassis frame 101, a fixed rod 302b fixed on the side wall of the second support plate 302a and extending to the other side of the rack 301d, a fixed ring 302c fixed on the end of the fixed rod 302b, and a limit block 302d fixed on the inner wall of the fixed ring 302c.

[0048] Furthermore, a threaded ring is slidably disposed in the fixing ring 302c, the lower portion of the threaded ring is fixed to the upper portion of the gear 302e, and the inner wall of the threaded ring is threadedly connected to the threaded rod 302f; the threaded rod 302f is slidably disposed in the fixing ring 302c.

[0049] Furthermore, a limiting groove K-1 is provided on the side wall of the threaded rod 302f, and the limiting block 302d is slidably disposed in the limiting groove K-1.

[0050] It should be noted that the limiting groove K-1 is a vertical groove, and the limiting block 302d can limit the threaded rod 302f so that the threaded rod 302f can only slide up and down.

[0051] Preferably, the lifting assembly 302 further includes an adjusting bracket 302g fixed to the lower portion of the threaded rod 302f, and a plurality of sets of traction wheels 106 are rotatably fixed to the side wall of the adjusting bracket 302g.

[0052] In this embodiment, when the electric push rod 301b is working, the moving electric push rod 301b will drive the telescopic rod 301c to move at the same time. The telescopic rod 301c will slide inside the first support plate 301a when it moves. When the telescopic rod 301c moves, it will drive the rack 301d to move. When the rack 301d moves, it will drive the gear 302e to rotate. When the gear 302e rotates, it will drive the threaded rod 302f to move. The threaded rod 302f can only move up or down due to the limiting effect of the limit block 302d. When the threaded rod 302f moves, it will drive the adjustment bracket 302g to move. When the adjustment bracket 302g moves, it will slide up and down relative to the chassis frame 101. At the same time, when the adjustment bracket 302g moves, it will drive several supporting wheels 105 to move. When the several supporting wheels 105 move, the supporting force of the track 102 will be adjusted.

[0053] It should be noted that after the supporting wheel 105 moves downward, the track 102 is in a relaxed state, which makes it easy to remove and replace the track 102, greatly improving the progress of the replacement work and greatly reducing the workload of the staff; after the supporting wheel 105 moves upward, the tension of the track 102 increases, and it can adapt to more uneven roads and be flexibly adjusted.

[0054] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A mobile crawler chassis structure, characterized in that: include, A main frame mechanism (100) comprises a chassis frame (101) and crawlers (102) symmetrically arranged on two side walls of the chassis frame (101); A tensioning mechanism (200) comprising a transmission member (201) fixed on the outer wall of the chassis frame (101), and a tensioning wheel (202) rotatably arranged on the transmission member (201), wherein the tensioning wheel (202) contacts the inner surface of the crawler track (102); The transmission member (201) comprises a fixing plate (201a) fixed on the outer wall of the chassis frame (101), and a support rod (201b) rotatably connected to the fixing plate (201a), wherein the support rod (201b) has two groups, and the two groups of the support rods (201b) are symmetrically arranged on the fixing plate (201a), and the support rods (201b) are in a "V" shape.

2. The mobile crawler chassis structure according to claim 1 is characterized in that: The transmission member (201) further comprises a hydraulic rod (201c) whose two ends are respectively fixed to the upper parts of the two groups of support rods (201b), and a spring (201d) sleeved on the outside of the hydraulic rod (201c), and the tensioning wheel (202) is rotatably arranged at the lower parts of the two groups of support rods (201b).

3. The mobile crawler chassis structure according to claim 2, characterized in that: The main frame mechanism (100) further comprises a driving wheel (103) arranged inside the crawler track (102), a guide wheel (104) and a supporting wheel (105) arranged below the driving wheel (103), and a traction wheel (106) arranged above the supporting wheel (105).

4. The mobile crawler chassis structure according to claim 3 is characterized in that: The tensioning mechanism (200) is arranged between the guide wheel (104) and the supporting wheel (105); The number of the traction wheels (106) is no less than three.

5. The mobile crawler chassis structure according to claim 4, characterized in that: Also includes: The regulating mechanism (300) comprises a push rod assembly (301) symmetrically arranged on two side walls of a chassis frame (101), and a lifting assembly (302) arranged on the push rod assembly (301).

6. The mobile crawler chassis structure according to claim 5, characterized in that: The push rod assembly (301) comprises a first support plate (301a) fixed on the chassis frame (101), an electric push rod (301b) arranged on the side wall of the first support plate (301a), a telescopic rod (301c) fixedly connected to the output end of the electric push rod (301b), and a rack (301d) fixed to the end of the telescopic rod (301c).

7. The mobile crawler chassis structure according to claim 6, characterized in that: The lifting assembly (302) comprises a second support plate (302a) fixed on the side wall of the chassis frame (101), a fixing rod (302b) fixed on the side wall of the second support plate (302a) and extending to the other side of the rack (301d), a fixing ring (302c) fixed on the end of the fixing rod (302b), and a limit block (302d) fixed on the inner wall of the fixing ring (302c).

8. The mobile crawler chassis structure according to claim 7, characterized in that: A threaded ring is also slidably disposed in the fixing ring (302c), the lower portion of the threaded ring is fixed to the upper portion of the gear (302e), and the inner wall of the threaded ring is threadedly connected to the threaded rod (302f); The threaded rod (302f) is slidably disposed in the fixing ring (302c).

9. The mobile crawler chassis structure according to claim 8, characterized in that: A limiting groove (K-1) is provided on the side wall of the threaded rod (302f), and the limiting block (302d) is slidably disposed in the limiting groove (K-1).

10. The mobile crawler chassis structure according to claim 9, characterized in that: The lifting assembly (302) further comprises an adjusting bracket (302g) fixed to the lower part of the threaded rod (302f), and a plurality of groups of the traction wheels (106) are rotatably fixed on the side wall of the adjusting bracket (302g).

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