CN213367243U - Handcart crank - Google Patents

Abstract

The utility model provides a handcart crank, including crank mechanism, angle adjuster and at least three sucking disc mechanism, angle adjuster rotates the cover and establishes crank mechanism is last, and is at least three sucking disc mechanism winds the central axis circumference evenly distributed of crank mechanism, sucking disc mechanism with angle adjuster articulates. The utility model discloses can prevent that the handcart crank from taking off the handle, and can adjust the contained angle between sucking disc mechanism and the crank mechanism.

Description

Handcart crank

Technical Field

The utility model relates to an electric power apparatus technical field, it is specific, relate to a handcart crank.

Background

35kV cubical switchboard circuit breaker handcart kind and numerous of transformer substation need operating personnel to operate through manual rocking handle one by one on the scene when operating these circuit breaker handcart. It has been found through long-term practice that the prior operating crank has the following disadvantages:

(1) traditional high-voltage equipment operation crank for "Z" style of calligraphy shape, the atress is uneven, often appears "taking off the condition of handle" in the operation, not only causes operating personnel's bodily injury easily, "takes off the handle" and still can cause the sound contact discharge time extension when handcart sound contact will contact or separate, influences the life of equipment.

(2) Traditional operation crank, the design is simple crude, and the friction is big between crank and the insulating gloves, and not only the operation is hard, causes operation crank and insulating gloves intertwine moreover, the insulating gloves of serious wear and tear.

(3) The mechanical resistance of part high tension switchgear during operation is big, and with the crank that the producer provided, the atress is unscientific, therefore the operation is hard. This is because the conventional "Z" shaped crank has only one point of force during operation, so that the operating handle is not rotated about the same axis during rotation, and the operating handle is often tilted.

(4) The switch cabinets of the same type have various models, and the operation holes of part of the high-voltage switch cabinets are not designed according to the national standard, so that the operation cranks of various models need to be equipped in the transformer substation. In the operation, various cranks are often required to be carried for operation, so that the workload is increased, the situation of configuration errors is often caused, and the management of spare parts is inconvenient.

(5) When the switch cabinet is locked, because the force applied by each operator is different, the instant force is too strong, and the possibility that the structure of the switch cabinet is damaged while the locking is broken is further caused.

To the problem among the prior art, the utility model designs a can prevent that handcart crank from taking off the handle, and can adjust the handcart crank of the contained angle between sucking disc mechanism and the crank mechanism.

SUMMERY OF THE UTILITY MODEL

To the problem among the above-mentioned prior art, the utility model provides a handcart crank can prevent that handcart crank from taking off the handle, and can adjust the contained angle between sucking disc mechanism and the crank mechanism.

In a first aspect, the utility model provides a handcart crank, including crank mechanism, angle adjuster and at least three sucking disc mechanism, angle adjuster rotates the cover and establishes in crank mechanism is last, and is at least three sucking disc mechanism winds the central axis circumference evenly distributed of crank mechanism, sucking disc mechanism with angle adjuster articulates.

In one embodiment, the suction cup mechanism is in toothed engagement with the angle adjuster.

The beneficial effects of adopting the above embodiment are: the angle adjuster is used for adjusting the included angle between the sucker mechanism and the crank mechanism.

In one embodiment, the sucker mechanism comprises a sucker, a gear and a connecting rod, wherein one end of the connecting rod is movably connected with the sucker, and the other end of the connecting rod is fixedly connected with the gear.

The beneficial effects of adopting the above embodiment are: the included angle between the sucker mechanism and the crank mechanism is adjusted through the rotation of the gear.

In one embodiment, the angle adjuster includes a linear bearing, a driving mechanism, and a rack, the linear bearing is sleeved on the crank mechanism, the driving mechanism is disposed on the linear bearing, and the rack is connected to the driving mechanism and is configured to move along an axial direction of the linear bearing under the driving of the driving mechanism, wherein the gear is rotatably disposed on the angle adjuster and is engaged with the rack.

The beneficial effects of adopting the above embodiment are: the driving mechanism drives the rack to move along the axis direction of the linear bearing so as to drive the gear meshed with the rack to rotate, and the adjustment of the included angle between the sucker mechanism and the crank mechanism is realized.

In one embodiment, the angle adjuster further comprises a bearing sleeve, which is sleeved on the linear bearing, and the gear is rotatably arranged on the bearing sleeve.

The beneficial effects of adopting the above embodiment are: the gear is rotatably arranged on the bearing sleeve to realize the rotation connection of the gear and the angle regulator, and further realize the hinging of the sucker mechanism and the angle regulator.

In one embodiment, the driving mechanism includes a slip ring slidably disposed on the linear bearing, the rack is connected to the slip ring, and the slip ring is capable of moving along an axial direction of the linear bearing.

The beneficial effects of adopting the above embodiment are: the rack is driven to move along the axis direction of the linear bearing by the movement of the slip ring.

In one embodiment, the driving mechanism further includes a fixing knob, the fixing knob is disposed on the sliding ring in a penetrating manner, and the fixing knob is configured to abut against the linear bearing through rotation, so as to achieve locking of the sliding ring.

The beneficial effects of adopting the above embodiment are: the fixed knob is abutted against the linear bearing by rotating the fixed knob, so that the slip ring is locked.

In one embodiment, the crank mechanism comprises a crank main body, at least one handle and a sleeve, wherein the handle is rotatably sleeved on the crank main body, and the sleeve is arranged at the end part of the crank main body and is used for being connected with a handcart driving screw rod.

The beneficial effects of adopting the above embodiment are: the winding condition of the handcart crank and the insulating gloves can not occur when an operator operates the handcart crank.

In one embodiment, the handle mechanism further comprises a clamping ring, wherein the clamping ring is sleeved on the handle mechanism and used for fixing the angle adjuster.

The beneficial effects of adopting the above embodiment are: the main effect of clamp ring is fixed angle regulator, avoids operating personnel to reciprocate at the handcart crank in-process of holding, damages angle regulator.

In one embodiment, the suction cup is spherically hinged with the connecting rod.

The beneficial effects of adopting the above embodiment are: the spherical hinge connection has the advantages of flexible rotation, accuracy and large torsion angle.

Compared with the prior art, the utility model has the main advantages that:

(1) the handcart crank can be prevented from dropping off the crank, and the included angle between the sucker mechanism and the crank mechanism can be adjusted.

(2) Simple structure, easy and simple to handle laborsaving, the security is high, has shortened the activity duration.

The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 shows a front view of a hand truck crank;

fig. 2 shows a right hand truck crank view;

fig. 3 shows a left side view of a hand truck crank;

fig. 4 shows a top view of a hand truck crank;

FIG. 5 shows a partial enlarged view A;

in the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

10-handcart crank; 11-a crank mechanism; 111-a crank body; 113-a grip; 115-a sleeve; 13-an angle adjuster; 131-linear bearings; 133-rack; 135-bearing housing; 137-slip ring; 139-fixed knob; 15-a suction cup mechanism; 151-suction cup; 153-gear; 155-connecting rod; 17-clamping ring.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1-5, a handcart crank 10 comprises a crank mechanism 11, an angle adjuster 13 and at least three sucker mechanisms 15, wherein the angle adjuster 13 is rotatably sleeved on the crank mechanism 11, the at least three sucker mechanisms 15 are circumferentially and uniformly distributed around the central axis of the crank mechanism 11, and the sucker mechanisms 15 are hinged to the angle adjuster 13.

Specifically, in this embodiment, the number of the suction cup mechanisms 15 is three, and the three suction cup mechanisms 15 are circumferentially and uniformly distributed around the central axis of the crank mechanism 11.

The crank mechanism 11 comprises a crank main body 111, at least one handle 113 and a sleeve 115, wherein the at least one handle 113 is rotatably sleeved on the crank main body 111, and the sleeve 115 is arranged at the end of the crank main body 111 and is used for being connected with a handcart driving screw rod.

Specifically, in the present embodiment, the handle main body 111 is formed by bending a cylindrical 45# steel, and has an arcuate structure. The handles 113 are of a circular tube structure, the two handles 113 are respectively sleeved on the middle part and one end part of the crank main body 111, the crank main body 111 and the handles 113 are rotatably connected through bearings, and the condition that the handcart crank 10 is wound with insulating gloves when an operator operates the handcart crank 10 can be effectively avoided. The end part of the other end of the crank main body 111 is provided with a sleeve 115, the sleeve 115 is cylindrical, one end of the sleeve 115 is connected with the end part of the crank main body 111, a square hole is formed in the end face of the other end of the sleeve 115, and the direction hole can be connected with the end part of the handcart driving screw rod in a matched mode.

In one embodiment, a strong magnet is built into sleeve 115 to enhance connectivity with the trolley drive wire.

In one embodiment, the sleeve 115 is detachably connected to the handle body 111, and includes a threaded connection, a snap connection, and the like, so as to facilitate replacement of the sleeve 115.

In one embodiment, the crank body 111 may be made of multiple cylindrical sections of 45# steel by split welding, and has an arcuate structure.

Wherein the suction cup mechanism 15 and the angle adjuster 13 are in mutual tooth engagement.

The suction cup mechanism 15 comprises a suction cup 151, a gear 153 and a connecting rod 155, wherein one end of the connecting rod 155 is movably connected with the suction cup 151, and the other end is fixedly connected with the gear 153.

The angle adjuster 13 comprises a linear bearing 131, a driving mechanism, a rack 133 and a bearing sleeve 135, wherein the linear bearing 131 is sleeved on the crank mechanism 11, the driving mechanism is arranged on the linear bearing 131, the rack 133 is connected with the driving mechanism and used for moving along the axial direction of the linear bearing 131 under the driving of the driving mechanism, the bearing sleeve 135 is sleeved on the linear bearing 131, and a gear 153 is rotatably arranged on the bearing sleeve 135 and meshed with the rack 133.

Specifically, in this embodiment, the linear bearing 131 is sleeved on the crank main body 111. In this embodiment, the driving mechanism includes a slip ring 137, the slip ring 137 is slidably sleeved on the linear bearing 131, and a gap is formed between the slip ring 137 and the linear bearing 131, so that the slip ring 137 can move along the axial direction of the linear bearing 131. The outer surface of the linear bearing 131 is provided with a strip-shaped groove, the length direction of the strip-shaped groove is consistent with the axial direction of the linear bearing 131, the rack 133 is arranged in the strip-shaped groove and is fixedly connected with the sliding ring 137, and the sliding ring 137 can drive the rack 133 to move along the axial direction of the linear bearing 131 in the movement process. The bearing sleeve 135 is sleeved on the linear bearing 131, the hinge shaft penetrates through the gear 153 and then fixes the gear 153 on the bearing sleeve 135, and the hinge shaft and the gear 153 can rotate mutually, so that the gear 153 is rotatably arranged on the angle adjuster 13. The gear 153 is engaged with the rack 133, and the rack 133 can drive the gear 153 to rotate during the process of moving along the axial direction of the linear bearing 131, and further drive the connecting rod 155 to rotate around the hinge shaft, so as to realize the hinge connection between the suction cup mechanism 15 and the angle adjuster 13. In the process that the connecting rod 155 rotates around the hinge shaft, the included angle between the crank main body 111 and the connecting rod 155 can be freely adjusted.

In one embodiment, the gear 153 is a semi-circular gear, and the angle adjuster 13 can freely adjust the included angle between the crank mechanism 11 and the suction cup mechanism 15 within 30-70 degrees.

In one embodiment, the driving mechanism further includes a fixing knob 139, the fixing knob 139 is disposed through the sliding ring 137, and the fixing knob 139 is configured to abut against the linear bearing 131 through rotation to achieve locking of the sliding ring 137.

Specifically, in this embodiment, a through hole is formed in the slip ring 137, an internal thread is formed in the inner side wall of the through hole, and an external thread matched with the internal thread is formed in the fixing knob 139, so that the fixing knob 139 is connected with the slip ring 137 through the thread, and the fixing knob 139 can move towards the linear bearing 131 in the rotating process and finally abuts against the linear bearing 131, so that the slip ring 137 is locked.

In one embodiment, the handcart crank 10 further comprises a clamping ring 17, and the clamping ring 17 is sleeved on the crank mechanism 11 and used for fixing the angle adjuster 13.

Specifically, in this embodiment, the clamp ring 17 is fixedly sleeved on the crank main body 111 for fixing the angle adjuster 13, so as to prevent the angle adjuster 13 from moving up and down to damage the angle adjuster 13 when the operator holds the crank 10.

In one embodiment, suction cup 151 is hingedly connected to link 155.

Specifically, in this embodiment, the suction cup 151 is provided with a spherical hinge support, one end of the connecting rod 155 is provided with a spherical hinge, and the spherical hinge is connected with the spherical hinge support, so that the spherical hinge connection has the advantages of flexible rotation, accuracy and large torsion angle.

Due to the fixation of the sucker 151, the phenomenon that an operator takes off the handle in the process of shaking the handcart crank 10 can be avoided, the operation safety is improved, and the operation time is shortened.

In one embodiment, the suction cup 151 includes a suction cup seat, a rubber pad disposed below the suction cup seat, a rubber pad inner supporting plate disposed in the rubber pad, a handle disposed above the suction cup seat, a pull rod, and a conical spring, one end of the pull rod passes through the suction cup seat and is fixedly connected to the rubber pad inner supporting plate, the other end of the pull rod is hinged to the handle through a pin, the conical spring is sleeved on the pull rod and is located between the suction cup seat and the rubber pad inner supporting plate, and in this embodiment, a single suction cup can bear a down force of 30 kg.

The utility model discloses handcart crank 10's operating method as follows:

the clamping ring 17 is opened, the sleeve 115 is connected with a handcart driving screw rod, then the sliding ring 137 moves along the axial direction of the linear bearing 131 to drive the driving connecting rod 155 to swing, after the angle is adjusted, the sliding ring 137 is locked by rotating the fixing knob 139, the angle of each sucker 151 is adjusted, the handle is pulled to fix each sucker 151, finally, the handle 113 arranged at the end part of the crank main body 111 is used as the center, the handle 113 in the middle of the crank main body 111 is tightly held, the crank mechanism 11 is rotated, and the handcart crank 10 is shaken in and out.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims (10)

1. A hand cart crank, comprising:

a crank mechanism;

the angle adjuster is sleeved on the crank mechanism in a rotating manner; and

and the at least three sucker mechanisms are circumferentially and uniformly distributed around the central axis of the crank mechanism, and the sucker mechanisms are hinged with the angle regulator.

2. The hand truck crank of claim 1, wherein the suction cup mechanism is in toothed engagement with the angle adjuster.

3. The hand cart crank of claim 2, wherein the suction cup mechanism comprises:

a suction cup;

a gear; and

and one end of the connecting rod is movably connected with the sucking disc, and the other end of the connecting rod is fixedly connected with the gear.

4. The hand truck crank of claim 3, wherein the angle adjuster comprises:

the linear bearing is sleeved on the crank mechanism;

a drive mechanism provided on the linear bearing; and

the rack is connected with the driving mechanism and is used for moving along the axial direction of the linear bearing under the driving of the driving mechanism;

the gear is rotatably arranged on the angle adjuster and meshed with the rack.

5. The hand cart crank of claim 4, wherein the angle adjuster further comprises a bearing housing, which is sleeved on the linear bearing, and the gear is rotatably disposed on the bearing housing.

6. The handcart crank of claim 4, wherein the driving mechanism comprises a slip ring, the slip ring is sleeved on the linear bearing in a sliding manner, the rack is connected with the slip ring, and the slip ring can move along the axial direction of the linear bearing.

7. The handcart crank of claim 6, wherein the driving mechanism further comprises a fixed knob, the fixed knob is arranged on the slip ring in a penetrating mode, and the fixed knob is used for abutting against the linear bearing through rotation so as to achieve locking of the slip ring.

8. The hand truck crank of claim 1, wherein the crank mechanism comprises:

a crank main body;

at least one handle which is rotationally sleeved on the crank main body; and

and the sleeve is arranged at the end part of the crank main body and is used for being connected with a handcart driving screw rod.

9. The hand cart crank of claim 1, further comprising a clamp ring that fits over the crank mechanism for securing the angle adjuster.

10. The hand cart crank of claim 3, wherein the suction cup is spherically hinged with the connecting rod.

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