CN215803380U - Jacking device - Google Patents

Abstract

The utility model provides a jacking device, comprising: the lifting piece is arranged on the guide rail and can be switched between a first state and a second state; the positioning pieces are pivotally arranged on two opposite sides of the lifting piece; the locking part is connected with the positioning part so as to open or close the positioning part; the bearing part is arranged at the bottom of the lifting part and can move relative to the lifting part; under the condition that the lifting piece is in the first state, the lifting piece abuts against the matching part of the guide rail, the locking piece closes the positioning piece, and the positioning piece is connected with the guide rail; under the condition that the lifting piece is in the second state, the positioning piece is opened by the locking piece, the positioning piece is separated from the guide rail, and the bearing piece is matched with the lifting piece to drive the lifting piece to be movable relative to the guide rail. The jacking device disclosed by the utility model not only can realize the jacking function, but also can ensure that the jacking device cannot be easily separated from the guide rail, and the safety of the jacking device in the using process is improved.

Description

Jacking device

Technical Field

The utility model belongs to the technical field of constructional engineering, and particularly relates to a jacking device.

Background

In recent years, in some high-rise and super high-rise constructions, a hydraulic shield system is used as an outer shield. The principle is that the hydraulic protection screen system is attached to a poured wall, beam or floor slab, hydraulic pressure is used as power, and I-shaped steel or double-channel steel with ladder bars is used as a guide rail, so that the automatic climbing of a frame body is realized. The climbing principle is that one end of a hydraulic oil cylinder is supported on a wall or plate attaching device, and the other end of the hydraulic oil cylinder is matched with a guide rail through a jacking device. The jacking device and the guide rail can only move in a single direction relatively, so that the oil cylinder can extend, and the guide rail can ascend. When the oil cylinder is contracted, the guide rail is not moved.

At present, the guide rail among the prior art is mostly the double flute steel form, and the structure is comparatively complicated, has wasted the material to a certain extent to processing difficulty, extravagant material. Meanwhile, the existing jacking device is easy to integrally overturn in the jacking process and is not safe enough. In addition, the guide rail limiting device of the existing jacking device has no locking function and is unsafe.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a jacking device, which at least can solve the problem that the jacking device in the prior art is not provided with a locking function and is easy to turn over as a whole.

In order to solve the technical problems, the utility model adopts the following technical scheme: a jacking device, comprising: the lifting piece is arranged on the guide rail and can be switched between a first state and a second state; the positioning pieces are pivotally arranged on two opposite sides of the lifting piece and used for positioning the guide rail; a locking member connected to the positioning member to open or close the positioning member; the bearing part is arranged at the bottom of the lifting part and can move relative to the lifting part; under the condition that the lifting piece is in the first state, the lifting piece abuts against the matching part of the guide rail, the locking piece closes the positioning piece, and the positioning piece is connected with the guide rail; under the condition that the lifting piece is in the second state, the retaining member is opened the locating piece, the locating piece with the guide rail breaks away from, the bearing part with the lifting piece cooperatees in order to drive the lifting piece is relative the guide rail is movable.

Further, the lift includes: the two support plates are oppositely arranged at intervals; the stop block is arranged between the two support plates and is respectively connected with the two support plates, and the stop block abuts against the matching part under the condition that the lifting piece is in the first state.

Further, the lift piece further includes: the flank spare, the flank spare is located one side of backup pad, the setting element with the flank spare pivot links to each other, the flank spare includes: the first mounting plate is arranged on the first side of the positioning piece; the second mounting plate is arranged on the second side of the positioning piece; the connecting piece, the connecting piece is located first mounting panel with between the second mounting panel, first mounting panel the second mounting panel with the connecting piece cooperation is injectd and is used for setting up dodge the groove of setting element.

Furthermore, the first mounting plate and the second mounting plate are arranged in parallel at intervals, the first mounting plate and the second mounting plate are respectively provided with corresponding jacks, and the first mounting plate and the second mounting plate are respectively connected with the positioning piece through the jacks.

Further, the number of the jacks on the first mounting plate and the second mounting plate is two respectively.

Further, the locker includes: a first lock body passing through the wing member and the positioning member; the second locking body penetrates through the side wing piece and the positioning piece, and the length of the second locking body is smaller than that of the first locking body; the connecting body is arranged between the first locking body and the second locking body and is respectively connected with the first locking body and the second locking body; under the condition that the lifting piece is in the first state, the first locking body and the second locking body are connected with the side wing piece and the positioning piece, and the locking piece closes the positioning piece; under the condition that the lifting piece is in the second state, the second locking body is separated from the positioning piece, and the positioning piece can move relative to the side wing piece.

Further, the positioning piece is a claw.

Furthermore, the jack catch is provided with a positioning hole, the first end of the locking piece penetrates through the jack, and the second end of the locking piece penetrates through the positioning hole.

Further, jacking device still includes: the elastic piece is arranged between the bearing piece and the lifting piece, and is in a stretching state under the condition that the lifting piece is in a first state; and when the lifting piece is in the second state, the elastic piece is in the original state.

Further, the elastic piece is a return spring.

The technical scheme of the utility model has the following beneficial effects: through combining together lifting piece, setting element retaining member and bearing piece to utilize the retaining member to lock the setting element on the guide rail, thereby not only can realize the function of jacking, but also can guarantee that the jacking device can not break away from the guide rail easily, ensure the security of jacking device in the jacking process.

Drawings

FIG. 1 is a schematic structural view of a jacking apparatus of the present invention;

FIG. 2 is a schematic view of the jacking device of the present invention cooperating with a guide rail;

FIG. 3 is an enlarged view of a portion of area A of FIG. 2;

FIG. 4 is a schematic structural view of a lifting member of the jacking device of the present invention

FIG. 5 is a schematic view of a side wing member of the jacking device of the present invention;

FIG. 6 is a schematic structural diagram of a positioning member of the jacking device of the present invention;

FIG. 7 is a schematic structural view of a locking member of the jacking device of the present invention;

FIG. 8 is a front view of the jacking device of the present invention;

FIG. 9 is a left side view of the jacking device of the present invention;

FIG. 10 is a top view of the jacking device of the present invention;

fig. 11 is a schematic structural view of a bearing part of the jacking device of the utility model.

Reference numerals:

a jacking device 100;

a lifter 10; a support plate 11; a stopper 12;

the side members 13; a first mounting plate 131; a second mounting plate 132;

a connecting member 133; a receptacle 134;

a positioning member 20; a positioning hole 21;

a retaining member 30; the first lock body 31; a second lock body 32; a connecting body 33;

a bearing member 40; a swing block side plate 41; a bearing shaft 42; a support plate 43; a connecting plate 44; a stiffening plate 45;

a guide rail 200; the fitting portion 210;

a hydraulic ram 300.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model, are within the scope of the utility model.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

A jacking device according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 11, a jacking apparatus 100 according to an embodiment of the present invention includes a lifting member 10, a positioning member 20, a locking member 30, and a bearing member 40.

Specifically, the lifting member 10 is configured to be disposed on the guide rail 200, and the lifting member 10 is switchable between a first state and a second state, the positioning member 20 is pivotally disposed on opposite sides of the lifting member 10, the positioning member 20 is configured to position the guide rail 200, the locking member 30 is connected to the positioning member 20 to open or close the positioning member 20, the bearing member 40 is disposed at the bottom of the lifting member 10, and the bearing member 40 is movable relative to the lifting member 10. Under the condition that the lifting piece 10 is in the first state, the lifting piece 10 abuts against the matching part 210 of the guide rail 200, the locking piece 30 closes the positioning piece 20, and the positioning piece 20 is connected with the guide rail 200. In the condition that the lifting member 10 is in the second state, the locking member 30 opens the positioning member 20, the positioning member 20 is separated from the guide rail 200, and the bearing member 40 cooperates with the lifting member 10 to drive the lifting member 10 to move relative to the guide rail 200.

In other words, referring to fig. 1 and 2, the jacking device 100 according to the embodiment of the utility model mainly comprises a lifting member 10 capable of performing a jacking function, a positioning member 20 capable of performing a limiting function, a locking member 30 capable of performing a locking function, and a bearing member 40 capable of providing a stabilizing function. As shown in fig. 2 and 3, the i-shaped guide rail 200 has a simple structure and a high material utilization rate. Thus, the jacking device 100 may be used in conjunction with the i-shaped rail 200. The jacking device 100 can be quickly assembled and disassembled with the I-shaped guide rail 200, can move in a single direction relative to the I-shaped guide rail 200, and can stably run relative to the guide rail 200 in the jacking process. Additionally, a hydraulic ram 300 may be coupled to the jacking device 100 and provide a driving force to the jacking device 100.

It should be noted that, referring to fig. 1, 8, 9 and 10, the positioning members 20 are disposed on both sides of the lifting member 10 and can be pivotally connected to the lifting member 10. For example, the positioning members 20 may be located on both left and right sides of the lifting member 10, and may be symmetrically distributed. The lift 10 and the guide rail 200 are separated from each other when the positioning member 20 is pivoted left and right open with respect to the lift 10, and the lift 10 is fixed with respect to the guide rail 200 when the positioning member 20 is pivoted left and right closed with respect to the lift 10.

Further, as shown in fig. 1 to 3, a locking member 30 is provided on the positioning member 20, and the locking member 30 enables the positioning member 20 to be opened or closed. For example, when the positioning member 20 needs to be pivoted left and right with respect to the lifting member 10 to be opened, the locking member 30 needs to open the positioning member 20 at this time. When the lifting member 10 needs to be relatively fixed with the guide rail 200 and the positioning member 20 needs to be pivoted left and right relative to the lifting member 10 for closing, the positioning member 20 can be locked relative to the lifting member 10 by using the locking member 30, so that the lifting member 10 is prevented from moving relative to the guide rail 200, the whole overturning of the jacking device 100 in the jacking process is prevented, and the safety of the jacking device 100 is improved.

In addition, referring to fig. 1 to 3, the bottom of the lifting member 10 is further provided with a bearing member 40, the bearing member 40 is composed of a swing block side plate 41, a bearing shaft 42, a bearing plate 43, a connecting plate 44 and a stiffening plate 45, and the above structures are all rigid joints (see fig. 11). The load bearing member 40 can be pivotally connected to the hydraulic ram 300. Since the jacking device 100 moves relative to the guide rail 200, the bearing member 40 is required to ensure the stability of the jacking device 100. In addition, the lifting member 10 is movable relative to the load bearing member 40. For example, a pin shaft is arranged between the bearing part 40 and the lifting part 10, and the bearing part 40 can move relative to the lifting part 10 around the pin shaft, so as to avoid the matching part 210 and enter the next jacking process, thereby realizing the stepping jacking of the hydraulic protective screen system.

For convenience of description, the extending direction of the guide rail 200 may be defined as an up-down direction, and the assembling direction of the positioning member 20 may be defined as a left-right direction.

It should be noted that the lift 10 is switchable between a first state and a second state. Wherein, under the condition that lifting piece 10 is in the first state, hydraulic cylinder 300 can provide ascending power to lifting piece 10, and lifting piece 10 can offset against cooperation portion 210 of guide rail 200 this moment, and lifting piece 10 can give the ascending power of cooperation portion 210 to it is upwards to drive guide rail 200. In addition, in order to prevent the lifting apparatus 100 from being detached from the guide rail 200, the positioning member 20 and the guide rail 200 are locked using the locking member 30, thereby ensuring that the positioning member 20 can be fixed to both left and right sides of the guide rail 200.

When the lifting piece 10 is in the second state, the hydraulic cylinder 300 can drive the lifting piece 10 to move downwards and away from the matching part 210, at this time, the lifting piece 10 descends along with the hydraulic cylinder 300, the guide rail 200 is kept static, and then the bearing part 40 can move relative to the lifting piece 10 around the pin shaft, so that the next jacking process can be carried out by avoiding the matching part 210. At this time, the securing member 20 may be opened using the securing member 30, and the securing member 20 can be pivoted in the left and right directions with respect to the lifting member 10 and away from the guide rail 200.

Therefore, according to the jacking device 100 of the embodiment of the utility model, the lifting member 10, the positioning member 20, the locking member 30 and the bearing member 40 are combined, and the positioning member 20 is locked on the guide rail 200 by using the locking member 30, so that not only can the jacking function be realized, but also the jacking device 100 can be ensured not to be easily separated from the guide rail 200, and the safety in the jacking process can be ensured.

According to one embodiment of the present invention, as shown in fig. 4, the lift 10 includes: two backup pads 11 and dog 12, two backup pads 11 are spaced apart the relative setting, and dog 12 is located between two backup pads 11 and is connected with two backup pads 11 respectively, and under the condition that lifting 10 is in the first state, dog 12 offsets with cooperation portion 210.

In other words, the lift 10 is mainly composed of two support plates 11 and stoppers 12, and the two support plates 11 can be connected by the stoppers 12. The number of the stoppers 12 may be one or two, and is not limited herein. For example, the two support plates 11 may be ribs, the stopper 12 may be a strip, or may have other shapes, one end of the stopper 12 is connected to one support plate 11, and the other end of the stopper 12 can be connected to the other support plate 11.

For example, when the lifter 10 is in the first state, the stopper 12 can be located at the bottom of the fitting portion 210 and can be abutted against the fitting portion 210, and the stopper 12 can power the fitting portion 210 upward under the pushing of the hydraulic cylinder 300.

By providing the stopper 12 between the two support plates 11, not only an effect of connecting the two support plates 11 can be provided, but also a contact area with the fitting portion 210 of the guide rail 200 can be increased, thereby providing greater power to the guide rail 200 so that the guide rail 200 can move upward more smoothly.

In some embodiments of the present invention, as shown in fig. 5, the lift 10 further comprises: a wing member 13, the wing member 13 being disposed on one side of the supporting plate 11, the positioning member 20 being pivotally connected to the wing member 13, the wing member 13 including: the positioning piece 20 comprises a first mounting plate 131, a second mounting plate 132 and a connecting piece 133, wherein the first mounting plate 131 is arranged on the first side of the positioning piece 20, the second mounting plate 132 is arranged on the second side of the positioning piece 20, the connecting piece 133 is arranged between the first mounting plate 131 and the second mounting plate 132, and the first mounting plate 131, the second mounting plate 132 and the connecting piece 133 are matched to define an avoiding groove for arranging the positioning piece 20.

In other words, the wing member 13 is further provided between the positioning member 20 and the lifting member 10, and the positioning member 20 can be pivotally connected to the wing member 13. It should be noted that the wing member 13 is mainly composed of a first mounting plate 131, a second mounting plate 132 and a connecting member 133.

For convenience of description, the assembling direction of the side member 13 may be defined as assembling in the up-down direction.

Wherein the first mounting plate 131 may be positioned above the second mounting plate 132, and the upper end of the connecting member 133 is connected to the first mounting plate 131, and the lower end of the connecting member 133 is connected to the second mounting plate 132. The connecting member 133 may have a columnar structure or a plate-like structure, which is not limited herein.

Further, the combination of the first mounting plate 131, the second mounting plate 132 and the connecting member 133 can form an avoiding groove, a part of the positioning member 20 can be disposed in the avoiding groove, and the positioning member 20 can move in the avoiding groove.

From this, set up the flank spare 13 through setting up in one side of lifting 10, not only can be convenient for the installation of setting element 20, be favorable to the activity of setting element 20, can provide protection and supporting role for setting element 20 moreover to can avoid setting element 20 to collide with other spare parts at the activity in-process, cause the damage of setting element 20.

According to an embodiment of the present invention, as shown in fig. 5, the first mounting plate 131 and the second mounting plate 132 are spaced apart and arranged in parallel, and the first mounting plate 131 and the second mounting plate 132 are respectively provided with corresponding insertion holes 134, and the first mounting plate 131 and the second mounting plate 132 are respectively connected to the positioning member 20 through the insertion holes 134. That is, a space is left between the first mounting plate 131 and the second mounting plate 132, and the space is sized to receive the positioning member 20. Further, the first mounting plate 131 and the second mounting plate 132 are respectively provided with insertion holes 134, alternatively, the insertion holes 134 may be circular holes, and the insertion holes 134 on the first mounting plate 131 are disposed opposite to the insertion holes 134 on the second mounting plate 132. For example, when the first mounting plate 131 is located above the second mounting plate 132, the axial line of the insertion hole 134 on the first mounting plate 131 and the axial line of the insertion hole 134 on the second mounting plate 132 can be aligned. In addition, the positioning member 20 can be connected to the first and second mounting plates 131 and 132 through the insertion hole 134.

By arranging the first mounting plate 131 and the second mounting plate 132 in parallel at intervals and arranging the corresponding insertion holes 134 on the first mounting plate 131 and the second mounting plate 132, the first mounting plate 131 and the second mounting plate 132 can be better connected with the positioning member 20, so that the positioning member 20 can move between the first mounting plate 131 and the second mounting plate 132, and the position of the positioning member 20 is prevented from being deviated.

In some embodiments of the present invention, as shown in fig. 5, the number of the insertion holes 134 on the first mounting plate 131 and the second mounting plate 132 is two, respectively. That is to say, two insertion holes 134 arranged at intervals are provided on the first mounting plate 131, two insertion holes 134 arranged at intervals are also provided on the second mounting plate 132, and in addition, the two insertion holes 134 of the first mounting plate 131 can correspond to the two insertion holes 134 on the second mounting plate 132 one to one.

Alternatively, as shown in fig. 7, the locker 30 includes: the locking device comprises a first locking body 31, a second locking body 32 and a connecting body 33, wherein the first locking body 31 penetrates through the side wing piece 13 and the positioning piece 20, the second locking body 32 penetrates through the side wing piece 13 and the positioning piece 20, the length of the second locking body 32 is smaller than that of the first locking body 31, and the connecting body 33 is arranged between the first locking body 31 and the second locking body 32 and is respectively connected with the first locking body 31 and the second locking body 32. In the condition of the lifting member 10 in the first state, the first and second locking bodies 31 and 32 are connected to the wing members 13 and the positioning member 20, the locking member 30 closes the positioning member 20, and in the condition of the lifting member 10 in the second state, the second locking body 32 is disengaged from the positioning member 20, and the positioning member 20 is movable relative to the wing members 13.

Optionally, the locking member 30 is U-shaped, and one of two sides of the U-shape is long and short, and the end of the long side is provided with a locking cap.

In other words, the locker 30 is mainly composed of a first locker body 31, a second locker body 32 and a connecting body 33, wherein the length of the second locker body 32 is smaller than that of the first locker body 31, the same end of the first locker body 31 and the second locker body 32 is connected through the connecting body 33, and the length of the first locker body 31 is greater than that of the second locker body 32 at the other end.

Further, the first locking body 31 can pass through the wing member 13 and the positioning member 20 at the same time, that is, the first locking body 31 can pass through the insertion holes 134 on the first mounting plate 131 and the second mounting plate 132 and the positioning member 20 at the same time. For example, the first locking body 31 may be a cylindrical member extending in the up-down direction, and during the insertion process, the lower end of the first locking body 31 may first pass through one of the insertion holes 134 of the first mounting plate 131, then pass through the positioning member 20, and finally pass through one of the insertion holes 134 of the second mounting plate 132.

The second locking body 32 can also pass through the wing member 13 and the positioning member 20 at the same time, for example, the second locking body 32 can also be a cylindrical member extending in the up-down direction, and during the insertion process, moving simultaneously with the first locking body 31, the lower end of the second locking body 32 can first pass through another insertion hole 134 of the first mounting plate 131, then pass through the positioning member 20, and finally pass through another insertion hole 134 of the second mounting plate 132.

It should be noted that, in the condition that the lifting element 10 is in the first state, the first locking body 31 and the second locking body 32 are both connected with the wing element 13 and the positioning element 20, and the locking element 30 closes the positioning element 20. That is, the first and second locking bodies 31 and 32 fix the wing piece 13 and the positioning piece 20 in two linear directions, and the connecting piece 133 connects the first and second locking bodies 31 and 32 such that the positioning piece 20 is fixed relative to the wing piece 13.

In the condition that the lifting member 10 is in the second state, the second locking body 32 is disengaged from the securing member 20, and the securing member 20 is movable relative to the wing member 13. At this time, only the first lock body 31 simultaneously penetrates the wing member 13 and the positioning member 20, and the positioning member 20 can rotate about the axis of the first lock member 30. For example, when the connecting body 33 of the locker 30 is pulled up, since the length of the second locker body 32 is smaller than that of the first locker body 31, the first locker body 31 can still maintain a state of penetrating the wing member 13 and the positioning member 20 at the same time, and the second locker 30 can be separated from the wing member 13 and the positioning member 20 so that the positioning member 20 can be rotated about the first locker 30.

By arranging the locker 30 in a structure consisting of the first locker body 31, the second locker body 32 and the connecting body 33 and using the length of the second locker body 32 smaller than that of the first locker body 31, the locker 30 is pulled by the locker 30, thereby enabling the opening or closing of the keeper 20 to be achieved, thereby ensuring that the relative positions of the jacking mechanism and the guide rail 200 are not deviated.

Alternatively, the first locking body 31, the second locking body 32 and the connecting body 33 are an integrally formed piece.

According to one embodiment of the present invention, as shown in fig. 6, the positioning member 20 is a claw. That is, the positioning members 20 can be engaged with the guide rail 200, and the number of the positioning members 20 may be two and clamp both right and left sides of the guide rail 200, respectively. By arranging the positioning member 20 as a claw, the positioning with the guide rail 200 can be realized, and the jacking device 100 is prevented from being separated from the guide rail 200 to cause danger.

Alternatively, as shown in fig. 6, the jaws are provided with positioning holes 21, the first end of the locker 30 passes through the insertion hole 134, and the second end of the locker 30 passes through the positioning holes 21. That is, the jaws are also provided with the positioning holes 21, and the first locking body 31 of the locking member 30 can simultaneously pass through the insertion holes 134 of the wing members 13 and the positioning holes 21 of the positioning member 20. The second locking body 32 of the locking member 30 can be simultaneously inserted through the other insertion hole 134 of the wing member 13 and the other positioning hole 21 of the positioning member 20. By providing the positioning holes 21 in the jaws, it is ensured that the locking member 30 can pass through both the wing member 13 and the positioning member 20 smoothly.

In some embodiments of the present invention, the jacking device 100 further comprises: the elastic piece is arranged between the bearing piece 40 and the lifting piece 10 and is in a stretching state under the condition that the lifting piece 10 is in the first state; in the second condition of the lifter 10, the resilient member is in its original condition. That is, an elastic member is further disposed between the bearing member 40 and the lifting member 10. Through the arrangement of the elastic member, the lifting member 10 can be restored to the original state under the condition of being in the second state, so that the lifting member 10 can be far away from the matching portion 210 of the guide rail 200, and the lifting member 10 is prevented from being directly abutted to the matching portion 210.

Optionally, the resilient member is a return spring. That is, a return spring may be optionally used to connect the bearing member 40 and the lifting member 10, wherein the return spring is in a stretched state when the lifting member 10 abuts against the engaging portion 210, and the return spring is restored to an original state when the lifting member 10 is away from the engaging portion 210. Since the return spring has good elasticity and is easy to obtain, the elastic member can be selectively provided as the return spring.

In summary, according to the jacking device 100 in the embodiment of the present invention, by combining the lifting member 10, the positioning member 20, the locking member 30 and the bearing member 40, and locking the positioning member 20 on the rail 200 by using the locking member 30, not only can the jacking function be achieved, but also it can be ensured that the jacking device 100 cannot be easily separated from the rail 200, thereby ensuring the safety during jacking. Compared with the existing jacking device, the jacking device 100 can be disassembled and assembled with the guide rail and the hydraulic oil cylinder 300, the jacking device 100 and the guide rail can be locked, the bearing part 40 bears the jacking task, and the jacking device is safe and reliable.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "illustrative embodiments," "preferred embodiments," "detailed description," or "preferred embodiments" or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (10)

1. A jacking device, comprising:

the lifting piece is arranged on the guide rail and can be switched between a first state and a second state;

the positioning pieces are pivotally arranged on two opposite sides of the lifting piece and used for positioning the guide rail;

a locking member connected to the positioning member to open or close the positioning member;

the bearing part is arranged at the bottom of the lifting part and can move relative to the lifting part;

under the condition that the lifting piece is in the first state, the lifting piece abuts against the matching part of the guide rail, the locking piece closes the positioning piece, and the positioning piece is connected with the guide rail;

under the condition that the lifting piece is in the second state, the retaining member is opened the locating piece, the locating piece with the guide rail breaks away from, the bearing part with the lifting piece cooperatees in order to drive the lifting piece is relative the guide rail is movable.

2. The jacking device of claim 1, wherein the lift member comprises:

the two support plates are oppositely arranged at intervals;

the stop block is arranged between the two support plates and is respectively connected with the two support plates, and the stop block abuts against the matching part under the condition that the lifting piece is in the first state.

3. The jacking device of claim 2, wherein the lift further comprises:

the flank spare, the flank spare is located one side of backup pad, the setting element with the flank spare pivot links to each other, the flank spare includes:

the first mounting plate is arranged on the first side of the positioning piece;

the second mounting plate is arranged on the second side of the positioning piece;

the connecting piece, the connecting piece is located first mounting panel with between the second mounting panel, first mounting panel the second mounting panel with the connecting piece cooperation is injectd and is used for setting up dodge the groove of setting element.

4. The jacking device of claim 3, wherein the first mounting plate and the second mounting plate are arranged in parallel at intervals, and are respectively provided with corresponding insertion holes, and the first mounting plate and the second mounting plate are respectively connected with the positioning piece through the insertion holes.

5. The jacking device of claim 4, wherein the number of the sockets on the first and second mounting plates is two each.

6. Jacking device according to claim 5, wherein said locking member comprises:

a first lock body passing through the wing member and the positioning member;

the second locking body penetrates through the side wing piece and the positioning piece, and the length of the second locking body is smaller than that of the first locking body;

the connecting body is arranged between the first locking body and the second locking body and is respectively connected with the first locking body and the second locking body;

under the condition that the lifting piece is in the first state, the first locking body and the second locking body are connected with the side wing piece and the positioning piece, and the locking piece closes the positioning piece;

under the condition that the lifting piece is in the second state, the second locking body is separated from the positioning piece, and the positioning piece can move relative to the side wing piece.

7. Jacking device according to claim 4, wherein said positioning element is a pawl.

8. The jacking device as claimed in claim 7, wherein the claw is provided with a positioning hole, a first end of the locking member passes through the insertion hole, and a second end of the locking member passes through the positioning hole.

9. The jacking device of claim 1, further comprising:

the elastic piece is arranged between the bearing piece and the lifting piece, and is in a stretching state under the condition that the lifting piece is in a first state; and when the lifting piece is in the second state, the elastic piece is in the original state.

10. Jacking device according to claim 9, wherein said elastic member is a return spring.

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