CN215208217U - Novel hydraulic claw jack - Google Patents

Abstract

The utility model belongs to the jack field, in particular to a novel hydraulic claw jack, which comprises a base, wherein a vertical jack is detachably and fixedly arranged on the base; the vertical jack comprises a large piston rod capable of sliding up and down in a reciprocating mode, one end of the large piston rod is detachably and fixedly connected with a lifting claw, stand columns are symmetrically and fixedly arranged on the base and located on two sides of the lifting claw, and sliding assemblies capable of sliding on the stand columns in a reciprocating mode are arranged on the two sides, close to the two stand columns, of the lifting claw respectively. Can effectually reduce the product fault rate, reduce the frictional force that the yawing force of heavy object lifting in-process produced, make the utility model discloses it is more laborsaving in the use.

Description

Novel hydraulic claw jack

Technical Field

The utility model belongs to the jack field especially relates to a novel hydraulic pressure claw formula jack.

Background

In the field of weight lifting tools there is a hydraulic jack claw which is widely used in large numbers.

The present tool also has some disadvantages. The tool has a certain failure rate and cannot be thoroughly solved, and the reasons are as follows: firstly, a large sliding friction resistance is generated due to the side load, so that the product is very laborious to use; secondly, the product needs to return to the original factory for maintenance under most conditions after the product is in failure, and the product is heavy, so that time, labor and money are wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple novel hydraulic pressure claw jack of little maintenance of frictional resistance to the above-mentioned problem that exists among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a novel hydraulic claw jack comprises a base, wherein a vertical jack is detachably and fixedly arranged on the base; the vertical jack comprises a large piston rod capable of sliding up and down in a reciprocating mode, one end of the large piston rod is detachably and fixedly connected with a lifting claw, stand columns are symmetrically and fixedly arranged on the base and located on two sides of the lifting claw, and sliding assemblies capable of sliding on the stand columns in a reciprocating mode are arranged on the two sides, close to the two stand columns, of the lifting claw respectively.

Preferably, one side of the base is provided with a notch convenient for the lifting claw to move, and the base can also be rotatably provided with two wheels for moving.

Preferably, the sliding assembly comprises a sliding seat with a hole, and a sliding bearing is fixedly arranged in the hole of the sliding seat.

Preferably, two connecting rib plates are fixedly arranged on the two sides of the lifting claw relative to the two upright columns, at least one sliding assembly is arranged on each rib plate along the axial direction of the upright column, and a sliding bearing of each sliding assembly slides on the upright column in a reciprocating manner.

Preferably, one end of the upright column, which is far away from the base, is provided with a limiting piece.

Preferably, each base can be provided with at least two handles.

Preferably, the lifting claw can be provided with a positioning sleeve for connecting with a large piston rod.

Preferably, the lifting claw can be further provided with a positioning hole.

Preferably, the base can be further provided with at least two mounting holes for further mounting with the base and the vertical jack.

Preferably, a return spring may be disposed between the base and the lifting claw.

Preferably, the two sides of the base can also be rotatably provided with wheels so as to be convenient to move.

Preferably, can now fix the supporting seat of band round hole on the base both sides, weld the stand in the round hole of supporting seat again.

Has the advantages that: compared with the prior art, the utility model, mainly there are following several improvements:

1. the vertical jack is used for lifting, the vertical jack is mature in the prior art, the failure rate is low, and the vertical jack is more convenient and cheaper to maintain if a failure occurs.

2. Through the setting of slip subassembly and stand, solved ordinary hydraulic pressure claw formula jack and can produce the problem of lateral force between big piston rod and inner cylinder for the fault rate of this product further reduces.

3. Through the setting of slip subassembly and stand for ordinary hydraulic pressure claw jack turns into because the steel-steel friction that the yawing force produced when the lifting heavy object into the oil-free lubrication bearing-steel friction in the utility model. The friction coefficient of steel-steel is 0.1, and the friction coefficient of oil-free lubrication bearing to steel is 0.04, greatly reduced the frictional force size that the yawing force produced, make the utility model discloses it is more laborsaving during product lifting heavy object.

Drawings

FIG. 1 is a front view of the first embodiment;

FIG. 2 is a front perspective view of the first embodiment;

FIG. 3 is a top perspective view of the first embodiment;

FIG. 4 is a front view of a base in accordance with one embodiment;

FIG. 5 is a top view of a base according to one embodiment;

FIG. 6 is a front perspective view of the lifting pawl in accordance with one embodiment;

FIG. 7 is a top view of the lifting pawl in the first embodiment

FIG. 8 is a view showing an internal structure of the sliding assembly according to the first embodiment;

FIG. 9 is a front perspective view of the second embodiment;

fig. 10 is a plan view of a lifting claw according to the third embodiment;

FIG. 11 is a front perspective view of the fourth embodiment;

FIG. 12 is a top perspective view of the fifth embodiment;

FIG. 13 is a front perspective view of the sixth embodiment;

FIG. 14 is a first part view of the base of the seventh embodiment;

FIG. 15 is a second part view of the base of the seventh embodiment;

FIG. 16 is a third part view of the base of the seventh embodiment;

fig. 17 is a part view of a base of an eighth embodiment.

In the figure: the lifting device comprises a base 1, lifting claws 5, a stand column 8, a limiting piece 15, a vertical jack 2, a large piston rod 3, a positioning sleeve 4, a connecting rib plate 6, a sliding assembly 7, a square sliding seat 71, an oil-free lubrication bearing 72, a first spring hooking screw 9, a second spring hooking screw 10, a return spring 11, a long sliding seat 14, a shaft 12, wheels 13, a lifting handle 17, a mounting hole 18 and a supporting seat 19.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to the orientation or position relationship based on the drawings, or the orientation or position relationship that the utility model is usually placed when using, and are only for convenience of description of the present invention and simplification of description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The first embodiment is as follows:

as shown in fig. 1-8, a novel hydraulic claw jack, a base 1 has a notch for facilitating the movement of a lifting claw 5, one end of the base 1, which is far away from the notch, is set to be trapezoidal to save cost, two upright columns 8 are fixedly arranged on the base 1 in bilateral symmetry with the notch, and a limiting part 15 is connected to the upper end of each upright column 8 through a thread. The base 1 is detachably and fixedly provided with a vertical jack 2, and the vertical jack comprises a large piston rod 3. Lifting claw 5 is Z shape, lifting claw 5 leans on upside diaphragm department lower terminal surface to be equipped with position sleeve 4, lifting claw 5 can dismantle with big piston rod 3's upper end through position sleeve 4 and be connected, lifting claw 5's both sides welded fastening has connection gusset 6, every is connected the axis direction that is equipped with two sliding component 7 along stand 8 on gusset 6, every sliding component 7 includes and connects gusset welded fastening's square slide 71, the inside step hole that link up that is equipped with of square slide 71, the downthehole riveting fixedly connected with oil-free lubrication bearing 72's of step of square slide 71 outer lane, oil-free lubrication bearing 72's inner circle is reciprocating sliding on stand 8.

The novel hydraulic claw jack of this embodiment is installed vertical jack 2 to the correct position of base 1, and big piston rod 3 is connected the completion with position sleeve 4. When the lifting claw 5 in the embodiment is used for lifting a heavy object, the vertical jack 2 lifts the large piston rod 3 upwards to drive the lifting claw 5 to move upwards, the lateral force received by the lifting claw 5 is transmitted to the upright post 8 through the sliding assembly 7 and cannot be transmitted to the large piston rod 3, and only the forward pressure is received when the vertical jack 2 lifts the large piston rod 3.

The embodiment is realized by arranging the upright post 8 and the sliding component 7. When lifting claw 5 removed, on all lateral force sliding component 7 transmitted the stand, the friction that produces by the lateral force only had the relative slip friction that produces of oil-free lubrication bearing 72 to stand 8, and current ordinary hydraulic pressure claw formula jack is steel-steel friction, and coefficient of friction is 0.1, in this embodiment, turns into oil-free lubrication bearing-steel friction with steel-steel friction, and coefficient of friction is 0.04, has reduced the frictional force that the lateral force caused greatly, thereby the utility model discloses a product is used more laborsavingly.

And this embodiment has adopted vertical jack 2 to carry out the lifting, and vertical jack is very stable ripe product, and the fault rate is the second lowest, even broken down also can be nearby the personnel that can maintain, significantly reduced the utility model discloses a fault rate has also reduced cost of maintenance simultaneously.

The positioning sleeve 4 in this embodiment may be replaced with a positioning hole opened in the lower end surface of the upper end cross plate portion of the lifting claw 5.

Example two:

further, with reference to fig. 9, on the basis of the first embodiment, the first spring hooking screws 9 are disposed at two sides of the lifting claw 5 near the large piston rod 3, the second spring hooking screws 10 are disposed at two sides of the base 1, and the first spring hooking screw 9 and the second spring hooking screw 10 on each same side are connected to each other to form the return spring 11.

The jack is more stable and rapid to return through the arrangement of the return spring 11.

Example three:

further, referring to fig. 10, on the basis of the first and second embodiments, a square slide carriage 71 is provided as a circular slide carriage 16 with a hole, the circular slide carriage 16 is fixed on the connecting rib plate 6 by welding, and an oil-free bearing 72 is provided in the hole of the circular slide carriage 16.

More shapes can be selected according to actual requirements.

Example four:

further, referring to fig. 11, on the basis of the first to third embodiments, two square sliders 71 are replaced with 1 long slider 14, and an oil-free bearing 72 is disposed inside the long slider 14.

The long sliding seat 14 can make the contact with the upright post 8 more stable, and has larger bearing area when lateral force is transmitted.

Example five:

further, referring to fig. 12, on the basis of the foregoing embodiment, shafts 12 are fixedly disposed on both sides of the base 1, and each shaft 12 is provided with a wheel 13.

The wheels 13 may be provided to facilitate movement.

Example six:

further, with reference to fig. 13, on the basis of the foregoing embodiment, handles 17 are installed on both sides of the base 1.

Handle 17 can carry this novel hydraulic pressure claw formula jack.

Example seven:

further, in conjunction with fig. 14-16, on the basis of the foregoing embodiments, the base 1 can be configured into more shapes to adapt to different situations or save production cost.

Furthermore, at least two mounting holes 18 can be further disposed on one side of the base 1 away from the gap, so as to further enhance the connection between the base 1 and the vertical jack 2.

Example eight:

further, referring to fig. 17, the two sides of the gap of the base 1 are welded with the supporting seat 19 with the circular hole, and then the pillar 8 is placed in the circular hole of the supporting seat 19 for further welding and fixing.

Set up supporting seat 19 and both strengthened stand 8 and base 1's joint strength, also for stand 8's installation reduces the degree of difficulty, improves the position precision when doing all can the stand 8 erection welding, avoids stand 8 position deviation to appear.

The above only is the embodiment of the present invention, not limiting the patent protection scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (7)

1. A novel hydraulic claw jack comprises a base and is characterized in that a vertical jack is detachably and fixedly arranged on the base; the vertical jack comprises a large piston rod capable of sliding up and down in a reciprocating mode, one end of the large piston rod is detachably and fixedly connected with a lifting claw, stand columns are symmetrically and fixedly arranged on the base and located on two sides of the lifting claw, and sliding assemblies capable of sliding on the stand columns in a reciprocating mode are arranged on the two sides, close to the two stand columns, of the lifting claw respectively.

2. The hydraulic claw jack as claimed in claim 1, wherein the base has a notch on one side for facilitating the lifting claw to move, and two wheels are rotatably disposed on the base for moving.

3. The novel hydraulic jaw jack of claim 1 wherein said slide assembly includes a slide with a hole, and a sliding bearing is riveted into the hole of said slide.

4. The novel hydraulic claw jack according to claim 1, wherein two connecting rib plates are fixedly arranged on the lifting claw relative to two sides of two columns, at least one sliding assembly is arranged on each rib plate along the axial direction of the columns, and a sliding bearing of each sliding assembly slides back and forth on the columns.

5. The novel hydraulic claw jack of claim 4 wherein the end of the upright column remote from the base is threadedly connected with a stop.

6. The hydraulic jack claw as claimed in claim 1 wherein each base has at least two handles.

7. The hydraulic jaw jack as claimed in claim 1 wherein said lifting jaw is provided with a locating sleeve for connection to a large piston rod.

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