CN220467406U - Novel crane grounding device - Google Patents

Abstract

The utility model relates to the technical field of crane grounding devices, in particular to a novel crane grounding device, which comprises: the utility model provides a crane grounding device which is simple in structure, low in cost and capable of avoiding the condition of overturning and top rail of a conductive plate.

Description

Novel crane grounding device

Technical Field

The utility model relates to the technical field of crane grounding devices, in particular to a novel crane grounding device.

Background

According to the safety regulations of the hoisting machinery, the metal structure of the hoisting machinery body is reliably connected with the protection wire of the power supply line. The rails of the hoisting machine may be connected to a protective grounding circuit. "it is therefore necessary to ensure a reliable connection between the metal structure of the hoisting machine and the rail.

There is a relatively mature grounding device JDX-01 currently available in the market, as shown in fig. 1; the grounding device mainly comprises a shell, a torsion spring part, a supporting rod, a grounding brush and a cable; during installation, the grounding device is fixed on a bracket specially manufactured on the corresponding part of the crane in a bolt, spring pad and nut mode, and meanwhile, the grounding brush is connected with the shell through a cable, so that the conductive quality is fully ensured; JDX-01 the grounding shoe device is a set of relatively mature grounding device, generally sold integrally, parts can not be purchased independently, the price is relatively high, in addition, the torsion spring can lose torsion after being maintained in a single action state for a long time, and therefore the grounding brush loses additional pressing force, and the grounding brush overturns or cannot effectively guarantee the conductive quality.

The grounding device conventionally adopted by the crane in the factory mainly comprises a support welded on a cart anchor frame, a linkage plate, a pin shaft, a conductive plate and the like; the conducting plate is connected with the linkage plates at two sides through a pin shaft, then hinged with the support through the pin shaft, and the other side of the pin shaft is fixed by a gasket and a cotter pin; the grounding device conventionally adopted by the crane in the factory is shown in the following figure 2; the grounding device conventionally adopted by the crane in the factory is mainly clung to the guide rail by the self weight of the conductive plate, so as to keep the grounding purpose; the structure is relatively simple, the cost is low, and the maintenance cost is low; however, no additional pressing force is added on the conductive plate, the conductive plate is easy to turn over in the reciprocating operation process of the crane travelling mechanism, so that the grounding conductive effect is not realized, in addition, when the blocking operation is not smooth at the hinge point of the pin shaft, the conductive plate cannot smoothly slide along the track or even cannot slide to generate a top rail phenomenon, and in severe cases, the structure of the cart anchoring frame is damaged or even the travelling wheels deviate from the track, so that the potential safety hazard of large hinging exists; the problem with the conductive plates in the grounding devices conventionally employed by our factory cranes during operation is shown in fig. 3 below.

Disclosure of Invention

The utility model aims to provide a novel crane grounding device so as to solve the technical problems in the background technology.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a novel crane grounding device, comprising: the crane anchor comprises a cart anchor frame, ground wire nuts, cables, guide shafts, a support, pin shafts and a conductive plate, wherein the support is fixedly connected to one side of the cart anchor frame, vertical guide holes are formed in the support, the guide shafts are in clearance fit in the vertical guide holes, the lower ends of the guide shafts are hinged to the conductive plates through the pin shafts, the bottom ends of the conductive plates are in contact fit with the top ends of crane steel rails, the ground wire nuts are arranged on one side of the cart anchor frame, and the guide shafts are connected with the ground wire nuts through the cables.

Further, the support is fixedly connected to one side of the movement direction of the cart anchor frame.

Further, the gap between the guide shaft and the vertical guide hole is 5-10 mm.

Further, a vertical limiting groove is formed in the inner wall of the vertical guide hole, a vertical limiting block is formed in the outer wall of the guide shaft, the vertical limiting block is in clearance fit with the vertical limiting groove, and a clearance between the vertical limiting block and the vertical limiting groove is 5-10 mm.

Further, the spread groove has been seted up at guiding axle bottom middle part, guiding axle lower extreme has seted up with spread groove looks vertically lower pinhole, the conducting plate upper end cooperatees with the spread groove, the last pinhole has been seted up at conducting plate upper end middle part, go up pinhole and lower pinhole cooperation, the round pin axle wears to establish pinhole and lower pinhole respectively, round pin axle and last pinhole and/or lower pinhole clearance fit.

Further, the method further comprises the following steps: the split pin is provided with a radial hole on one side of the small end of the pin shaft, and the split pin penetrates through the radial hole and is clamped on the pin shaft.

Further, the method further comprises the following steps: the gasket is sleeved on one side, close to the cotter pin, of the pin shaft and is arranged between the conducting plate and the cotter pin.

Further, the gap between the pin shaft and the upper pin hole and/or the lower pin hole is 5-10 mm.

Further, the conducting plate is in a 'shape', two ends of the conducting plate in the moving direction are respectively tilted, and the tilting angles of the two ends of the conducting plate are 15-45 degrees.

Compared with the prior art, the utility model has the beneficial effects that:

1. the guide shaft can move up and down along a vertical guide hole on the cart anchor frame; the top of the guide shaft is connected with a ground wire nut welded on the cart anchor frame through a cable; the structure of the conductive plate is changed, the contact area of the conductive plate and the track is increased, the conductive quality is ensured, in addition, the vertical design of the guide shaft is equivalent to that the conductive plate is additionally provided with pressing force, the conductive plate and the track can be tightly attached together, the raising design of the two ends of the conductive plate can enable the conductive plate to drive the guide shaft to integrally slide upwards when encountering obstruction in the operation process, and the possibility of overturning the conductive plate is greatly avoided; secondly, the pin shaft is matched with the upper pin hole and/or the lower pin hole and/or the guide shaft is matched with the vertical guide hole in a large clearance with a clearance of 5-10, so that the problem of jamming of each hinge point or part during operation is solved; finally, the top of the guide shaft is connected with a ground wire nut welded on the cart anchoring frame through a cable, so that the conductivity between the conductive plate and the metal structural member of the crane is greatly enhanced, and the grounding safety of the crane is ensured.

2. The whole device has simple structure and convenient maintenance, and can well save the cost; meanwhile, the whole device has wide applicability.

Drawings

FIG. 1 is a schematic diagram of a JDX-01 grounding shoe in the background of the utility model;

FIG. 2 is a schematic view of a grounding device conventionally employed by a factory crane in the background of the utility model;

FIG. 3 is a schematic diagram of the problems of the conductive plates in the grounding device conventionally employed in the crane in our factory during operation in the background of the utility model;

FIG. 4 is a front view of the present utility model;

fig. 5 is a right side view of the present utility model.

The reference numerals in the drawings are: 1-cart anchor frame, 2-ground wire nut, 3-cable, 4-guiding shaft, 5-support, 6-pin shaft and 7-conducting plate.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and examples.

Referring to fig. 1 to 5, a novel crane grounding device includes: the trolley anchor frame 1, the ground wire nut 2, the cable 3, the guiding axle 4, the support 5, round pin axle 6 and current conducting plate 7, support 5 fixed connection is in trolley anchor frame 1 one side, vertical guiding hole has been seted up on the support 5, guiding axle 4 clearance fit is in this vertical guiding hole, guiding axle 4 lower extreme articulates current conducting plate 7 through round pin axle 6, current conducting plate 7 bottom and hoist rail top contact cooperation, trolley anchor frame 1 one side is provided with ground wire nut 2, be connected through cable 3 between guiding axle 4 and the ground wire nut 2.

The support 5 is fixedly connected to one side of the cart anchor frame 1 in the moving direction.

The gap between the guide shaft 4 and the vertical guide hole is 5-10 mm, so that the guide shaft 4 can smoothly swim up and down in the vertical guide hole, and the jamming condition is avoided.

A vertical limiting groove is formed in the inner wall of the vertical guide hole, a vertical limiting block is formed in the outer wall of the guide shaft 4, the vertical limiting block is in clearance fit with the vertical limiting groove, and the clearance between the vertical limiting block and the vertical limiting groove is 5-10 mm; the conducting plate 7 is of a 'shape', two ends of the conducting plate 7 in the moving direction are respectively tilted, and the tilting angles of two ends of the conducting plate 3 are 15-45 degrees; the vertical limiting block and the vertical limiting groove are matched to limit the axial rotation angle of the guide shaft 4, so that the conductive plate is guaranteed to smoothly turn over the obstacle through tilting of two ends of the conductive plate in the movement process, and the possibility of turning over the conductive plate is greatly avoided.

The guide shaft 4 bottom middle part has seted up the spread groove, and the lower pinhole that is perpendicular with the spread groove has been seted up to the guide shaft 4 lower extreme, and the conducting plate 7 upper end cooperatees with the spread groove, and the last pinhole is cooperated with lower pinhole in the middle part of the conducting plate 7 upper end, and round pin axle 6 wears to establish respectively to go up pinhole and lower pinhole, round pin axle 6 and go up pinhole and/or lower pinhole clearance fit, and the clearance between round pin axle 6 and last pinhole and/or the lower pinhole is 5 ~ 10mm, takes place the jam when can guaranteeing to rotate between round pin axle 6 and last pinhole and/or the lower pinhole.

Further comprises: the split pin and the gasket are arranged on one side of the small end of the pin shaft 6, and the split pin penetrates through the radial hole and is clamped on the pin shaft; the gasket is sleeved on one side of the pin shaft 6 adjacent to the cotter pin, and the gasket is arranged between the conductive plate 7 and the cotter pin.

Working principle: when the crane moves along the steel rail, the bottom end of the conducting plate 7 is in contact fit with the top end of the steel rail of the crane, the contact area is large, the conducting quality is guaranteed, if the crane encounters an obstacle in the moving process, the tilting design of the two ends of the conducting plate 7 can enable the conducting plate 7 to drive the guide shaft 4 to integrally slide upwards when encountering the obstacle in the running process, and the possibility of overturning the conducting plate 7 is greatly avoided; the top of the guide shaft 4 is connected with the ground wire nut 2 welded on the cart anchor frame 1 through the cable 3, so that the conductivity between the conductive plate 7 and the metal structural member of the crane is greatly enhanced, and the grounding safety of the crane is ensured.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "top/bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The present utility model is not limited to the preferred embodiments, and any simple modification, equivalent replacement, and improvement made to the above embodiments by those skilled in the art without departing from the technical scope of the present utility model, will fall within the scope of the present utility model.

Claims (9)

1. Novel hoist ground connection device, characterized in that includes: the ground wire anchor frame comprises a cart anchor frame (1), a ground wire nut (2), a cable (3), a guide shaft (4), a support (5), a pin shaft (6) and a conductive plate (7), wherein the support (5) is fixedly connected to one side of the cart anchor frame (1), a vertical guide hole is formed in the support (5), the guide shaft (4) is in clearance fit in the vertical guide hole, the lower end of the guide shaft (4) is hinged to the conductive plate (7) through the pin shaft (6), the bottom end of the conductive plate (7) is in contact fit with the top end of a crane steel rail, the ground wire nut (2) is arranged on one side of the cart anchor frame (1), and the guide shaft (4) is connected with the ground wire nut (2) through the cable (3).

2. The novel crane grounding device according to claim 1, wherein: the support (5) is fixedly connected to one side of the moving direction of the cart anchor frame (1).

3. The novel crane grounding device according to claim 1, wherein: the gap between the guide shaft (4) and the vertical guide hole is 5-10 mm.

4. A novel crane grounding device according to claim 1 or 3, characterized in that: the vertical limiting groove is formed in the inner wall of the vertical guide hole, the vertical limiting block is formed in the outer wall of the guide shaft (4), the vertical limiting block is in clearance fit with the vertical limiting groove, and the clearance between the vertical limiting block and the vertical limiting groove is 5-10 mm.

5. The novel crane grounding device according to claim 1, wherein: the guide shaft is characterized in that a connecting groove is formed in the middle of the bottom end of the guide shaft (4), a lower pin hole perpendicular to the connecting groove is formed in the lower end of the guide shaft (4), the upper end of the conductive plate (7) is matched with the connecting groove, an upper pin hole is formed in the middle of the upper end of the conductive plate (7), the upper pin hole is matched with the lower pin hole, the pin shaft (6) penetrates through the upper pin hole and the lower pin hole respectively, and the pin shaft (6) is in clearance fit with the upper pin hole and/or the lower pin hole.

6. The novel crane grounding device according to claim 5, wherein: further comprises: the split pin is provided with a radial hole at one side of the small end of the pin shaft (6), and the split pin penetrates through the radial hole and is clamped on the pin shaft.

7. The novel crane grounding device according to claim 6, wherein: further comprises: the gasket is sleeved on one side, close to the cotter pin, of the pin shaft (6), and the gasket is arranged between the conductive plate (7) and the cotter pin.

8. The novel crane grounding device according to claim 5, wherein: the gap between the pin shaft (6) and the upper pin hole and/or the lower pin hole is 5-10 mm.

9. The novel crane grounding device according to claim 4, wherein: the conducting plate (7) is of a 'shape', two ends of the conducting plate (7) in the moving direction are respectively tilted, and the tilting angles of the two ends of the conducting plate (7) are 15-45 degrees.