CN215756122U

CN215756122U - Centering lifting device and centering lifting system

Info

Publication number: CN215756122U
Application number: CN202121729028.0U
Authority: CN
Inventors: 曾博东; 张鑫
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-02-08
Anticipated expiration: 2031-07-27

Abstract

The utility model discloses a centering lifting device and a centering lifting system, wherein the centering lifting device comprises: a gantry having a bottom beam; the subassembly lifts, it is two to lift the subassembly, two it is in to lift the subassembly relative setting on the floorbar, it includes to lift the subassembly: fixing part, hydraulic pressure lift and lift, the one end of fixing part with the rack is fixed, the other end of fixing part is provided with hydraulic pressure lift, the free end of hydraulic pressure lift with lift is connected and is used for promoting lift, lift is used for lifting wait to lift the part. From this, can simplify centering lifting devices's structure, improve drive efficiency, reduce cost, simultaneously based on the setting of hydraulic pressure lifting member, can make centering lifting devices's structure compacter, control simply just have overload protection function, improve centering lifting devices's safety in utilization.

Description

Centering lifting device and centering lifting system

Technical Field

The utility model relates to the technical field of dynamometers, in particular to a centering lifting device and a centering lifting system.

Background

In the related technology, the centering lifting device converts rotation into linear motion through the cooperation of a screw rod and a nut through mechanical structures such as the screw rod, the nut, a shaft rod, a rocker arm and the like so as to realize the lifting and centering functions of the centering lifting device.

However, the existing centering and lifting device has a complex mechanical structure, high requirements on manufacturing and control precision, low transmission efficiency of screw nut transmission, large friction loss, small thrust and torque, and difficulty in meeting lifting requirements.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a centering and lifting device, which has a simple structure, high driving efficiency, overload protection function, and high safety.

The application further provides a centering and lifting system adopting the centering and lifting device.

According to the embodiment of the first aspect of the application, the centering and lifting device comprises: a gantry having a bottom beam; the subassembly lifts, it is two to lift the subassembly, two it is in to lift the subassembly relative setting on the floorbar, it includes to lift the subassembly: fixing part, hydraulic pressure lifting member and lift, the one end of fixing part with the rack is fixed, two the free end orientation of hydraulic pressure lifting member extends each other, the other end of fixing part is provided with hydraulic pressure lifting member, hydraulic pressure lifting member's free end with lifting member is connected and is used for promoting lifting member, lifting member is used for lifting wait to lift the part.

According to the centering lifting device of the embodiment of the application, the hydraulic lifting piece directly pushes the lifting piece to realize centering lifting, a transmission structure is not required to be arranged between the power source and the executing piece, the structure of the centering lifting device can be simplified, the driving efficiency is improved, the cost is reduced, meanwhile, based on the arrangement of the hydraulic lifting piece, the structure of the centering lifting device is more compact, the control is simple, the overload protection function is realized, and the use safety of the centering lifting device is improved.

According to some embodiments of the application, the hydraulic lift comprises: the push rod is connected with a piston of the hydraulic cylinder, and the free end of the push rod is connected with the lifting piece.

In some embodiments, the lift comprises: the lifting part is fixed at one end of the connecting part, which is far away from the push rod, and is used for lifting the part to be lifted.

Further, the connection portion includes: the connecting plate that sets up relatively, set up two a plurality of fixed plates between the connecting plate, the fixed plate be used for with the push rod is connected, the portion of lifting sets up on the connecting plate.

In some embodiments, the lift comprises: the lifting plate is arranged in parallel with the bottom beam, and the roller is arranged at the end part of the lifting plate.

According to some embodiments of the application, the lifting member is provided with a guide wheel thereon, and the stand comprises: the lifting assembly is arranged in the accommodating space, a guide groove matched with the guide wheel is formed in the side plate, and the extending direction of the guide groove is consistent with the moving direction of the push rod.

According to a second aspect of the application embodiment of the centering lifting system, comprising: the centering and lifting device and the driving device are used for driving the hydraulic lifting piece of the centering and lifting device.

In some embodiments, the driving device comprises: the hydraulic cylinder is characterized by comprising an energy accumulator and a four-way valve, wherein the first end of the four-way valve is communicated with the energy accumulator, the second end of the four-way valve is communicated with one end of the hydraulic cylinder, the third end of the four-way valve is communicated with the other end of the hydraulic cylinder, and the fourth end of the four-way valve is constructed as a liquid return end.

Further, the driving device further includes: the liquid storage tank is communicated with the fourth end, the oil pump, the filter and the one-way valve are sequentially communicated and used for storing energy to the energy accumulator, and the overflow valve is arranged on a bypass branch between the filter and the one-way valve.

Furthermore, a first speed regulating valve is arranged between the energy accumulator and the first end, and a second speed regulating valve is arranged between the liquid storage tank and the fourth end.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a centering lift device according to an embodiment of the present application;

FIG. 2 is a schematic illustration of a hydraulic lifting member of a centering lifting device according to an embodiment of the present application;

FIG. 3 is a schematic view of a sliding fit of a hydraulic lifting member and a gantry of a centering lifting device according to an embodiment of the present application;

fig. 4 is a schematic view of a drive device according to an embodiment of the present application.

Reference numerals:

the centering and lifting device 100 is provided with a centering and lifting mechanism,

a table frame 10, a bottom beam 11, side plates 12, guide grooves 121,

lifting component 20, fixing component 21, hydraulic lifting component 22, hydraulic cylinder 221, push rod 222, lifting component 23, connecting part 231, side plate 2311, fixing plate 2312, lifting part 232, lifting plate 2321, roller 2322, guide wheel 233,

the driving means (200) is provided in the form of a motor,

the system comprises an accumulator 201, a four-way valve 202, a liquid storage tank 203, an oil pump 204, a filter 205, a relief valve 206, a one-way valve 207, a first speed regulating valve 208, a second speed regulating valve 209 and a pressure switch 210.

The part 300 is to be lifted.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A centering and lifting device 100 and a centering and lifting system according to an embodiment of the present invention are described below with reference to fig. 1-4.

As shown in fig. 1 and fig. 2, the centering and lifting device 100 according to the embodiment of the first aspect of the present application includes: a rack 10 and a lifting assembly 20, wherein the rack 10 is used for fixing the centering lifting device 100 on the ground, and the lifting assembly 20 is used for lifting and centering the component 300 to be lifted, for example: the present application applies the lifting device 100 to the dynamometer technology field, and the lifting assembly 20 is used to align the center of the driving wheel (i.e. the component 300 to be lifted) of the vehicle (including but not limited to a rail vehicle, a vehicle) with the center of the driving hub of the dynamometer in the vertical direction and lift the driving wheel to the proper position.

Wherein, the platform frame 10 is provided with a bottom beam 11, and the bottom beam 11 is arranged on the ground; the lifting assemblies 20 are two, the two lifting assemblies 20 are oppositely arranged on the bottom beam 11, and the lifting assemblies 20 comprise: the hydraulic lifting device comprises a fixing piece 21, hydraulic lifting pieces 22 and lifting pieces 23, wherein one end of the fixing piece 21 is fixed with the rack 10, the other end of the fixing piece 21 is provided with the hydraulic lifting pieces 22, the free ends of the two hydraulic lifting pieces 22 extend towards each other, the free ends of the hydraulic lifting pieces 22 are connected with the lifting pieces 23 and used for pushing the lifting pieces 23, and the lifting pieces 23 are used for lifting the part 300 to be lifted.

Specifically, the centering and lifting device 100 can be arranged in pairs (for example, a dynamometer) or used alone (for example, a part is lifted and centered alone), each centering and lifting device 100 has two lifting assemblies 20, the two lifting assemblies 20 are arranged oppositely (for example, in a front-back direction or a left-right direction), one end of each lifting assembly 20 is fixed on the bottom beam 11, the other end is configured as a free end, the free ends of the two lifting assemblies 20 extend towards each other, a lifting space is defined between the free ends of the two lifting assemblies 20, and the part 300 to be lifted can be placed on the lifting space.

Furthermore, the fixing member 21 of the lifting assembly 20 is used for fixing with the bottom beam 11, the hydraulic lifting member 22 is used as a power source of the lifting assembly 20, one end of the hydraulic lifting member 22 is fixed with the fixing member 21, the other end of the hydraulic lifting member is connected with the lifting member 23 and used for pushing the lifting member 23 to move, the other ends of the hydraulic lifting members 22 of the two lifting assemblies 20 extend towards each other, a lifting space is defined between the lifting members 23 of the two lifting assemblies 20, and the lifting member 23 is used as an actuating member for pushing the part 300 to be lifted to be centered and lifted.

According to the centering lifting device 100 of the embodiment of the application, the hydraulic lifting piece 22 directly pushes the lifting piece 23 to realize centering lifting, a transmission structure is not required to be arranged between a power source and an executing piece, the structure of the centering lifting device 100 can be simplified, the driving efficiency is improved, the cost is reduced, meanwhile, based on the arrangement of the hydraulic lifting piece 22, the structure of the centering lifting device 100 can be more compact, the control is simple, the overload protection function is realized, and the use safety of the centering lifting device 100 is improved.

It should be noted that the hydraulic lifting member 22 has a hydraulic structure, and has a small volume, a light weight, a simple and convenient arrangement, and a large driving force, and can realize low-speed driving of the large-tonnage component 300 to be lifted.

In the particular embodiment shown in fig. 2, the hydraulic lift 22 comprises: a hydraulic cylinder 221 and a push rod 222, wherein the push rod 222 is connected with the piston of the hydraulic cylinder 221, and the free end of the push rod 222 is connected with the lifting piece 23.

Specifically, the cylinder sidewall of the hydraulic cylinder 221 is connected to the upper end of the fixed member 21, one end of the push rod 222 is connected to or formed as the piston of the hydraulic cylinder 221, and the other end (i.e., the free end) of the push rod 222 extends obliquely upward and is connected to the lifting members 23, so that the two lifting members 23 move toward each other synchronously during the upward movement, and perform the lifting action and move toward each other to perform the centering action, so that the centers of the component 300 to be lifted and a driving component (e.g., a driving hub of a dynamometer) are located on the same straight line in the vertical direction.

In this way, the two hydraulic lifting pieces 22 arranged oppositely synchronously drive the part 300 to be lifted, so that sufficient thrust and uniform thrust distribution can be ensured, the pushing stability of the part 300 to be lifted is improved, the free end of the push rod 222 is directly connected with the lifting piece 23, a transmission structure is not required, and the driving efficiency can be further improved.

As shown in fig. 2 and 3, in some embodiments, the lift 23 comprises: the connecting portion 231 and the lifting portion 232, the connecting portion 231 is connected with the free end of the push rod 222, and the lifting portion 232 is fixed on one end of the connecting portion 231, which is far away from the push rod 222, and is used for lifting the component 300 to be lifted.

Specifically, the connecting portion 231 is connected to the push rod 222, the upper end of the connecting portion 231 is provided with the lifting portion 232, the extending direction of the lifting portion 232 is parallel to the horizontal direction, the to-be-lifted component 300 can be placed on the lifting portion 232, and the extending direction of the lifting portion 232 is parallel to the horizontal direction, so that the placing stability of the to-be-lifted component 300 on the centering lifting device 100 can be improved, and the centering lifting effect of the centering lifting device 100 can be further improved.

As shown in fig. 3, the connection portion 231 includes: the connecting plates 2311 are oppositely arranged, and a plurality of fixing plates 2312 are arranged between the two connecting plates 2311, the fixing plates 2312 are used for being connected with the push rods 222, and the lifting parts 232 are arranged on the connecting plates 2311.

Wherein, a fixing space is defined between the two connecting plates 2311, the plurality of fixing plates 2312 may be disposed in the fixing space, both ends of the plurality of fixing plates 2312 are fixed to the two connecting plates 2311, the plurality of fixing plates 2312 are connected to form a frame structure having a "Z" -shape, an "i" -shape, a rectangular shape or a triangular shape, the push rod 222 is fixed to at least one of the plurality of fixing plates 2312, and the lifting part 232 is disposed at the upper end of the connecting plate 2311. Thus, the structural strength of the connecting portion 231 is increased, the stability of connection between the lifting member 23 and the hydraulic lifting member 22 can be improved, and the connecting portion 231 is ensured not to be deformed when bearing a large thrust, so that the centering lifting stability is further improved.

In the embodiment shown in fig. 2 and 3, the lift 232 includes: a lifting plate 2321 disposed in parallel with the bottom beam 11, and a roller 2322 disposed at an end of the lifting plate 2321.

It is understood that at least a portion of the lifting plate 2321 is connected to the connecting plate 2311, another portion of the lifting plate 2321 protrudes from the connecting plate 2311, and the end of the lifting plate 2321 protruding from the connecting plate 2311 is provided with the roller 2322, and the lifting plate 2321 extends in the horizontal direction. Therefore, the to-be-lifted component 300 is lifted by the lifting plate 2321, and in the centering lifting process, the to-be-lifted component 300 and the roller 2322 are configured to have rolling friction, so that the friction coefficient between the to-be-lifted component 300 and the lifting part 232 can be reduced, the thrust required in the centering lifting process of the to-be-lifted component 300 can be reduced, a smaller hydraulic lifting piece 22 can be adopted, and the cost of the centering lifting device 100 can be reduced.

In the specific embodiment shown in fig. 3, the lifting member 23 is provided with a guide wheel 233, and the stand 10 includes: the side plate 12, the top plate (not shown in the figures) and the bottom beam 11 define an accommodating space, the lifting assembly 20 is disposed in the accommodating space, the side plate 12 is provided with a guide groove 121 matched with the guide wheel 233, and the extending direction of the guide groove 121 is consistent with the moving direction of the push rod 222.

Specifically, at least one connecting plate 2311 of the lifting piece 23 is provided with a guide wheel 233, the side plate 12 is correspondingly provided with a guide groove 121, and the extending direction of the guide groove 121 is parallel to the pushing movement direction, so that the movement of the lifting piece 23 is guided through the sliding fit of the guide wheel 233 and the guide groove 121, and the movement stability is improved.

As shown in fig. 1 and 4, a centering lift system according to an embodiment of the second aspect of the present application includes: the above embodiment of the centering and lifting device 100 and the driving device 200, the driving device 200 is used to drive the hydraulic lifting member 22 of the centering and lifting device 100.

Specifically, the driving device 200 is configured as a hydraulic driving device 200 for supplying hydraulic oil to the hydraulic lifting member 22 to extend or retract the push rod 222 to the hydraulic cylinder 221, thereby achieving centered lifting of the member to be lifted 300.

According to the centering and lifting system of the embodiment of the application, by adopting the centering and lifting device 100, the space occupation of the centering and lifting system can be reduced, the structure of the centering and lifting system is simplified, the centering and lifting system has an overload protection function, and the working stability and the use safety of the centering and lifting system are improved.

As shown in fig. 4, the driving device 200 includes: accumulator 201, and four-way valve 202, a first end of four-way valve 202 being in communication with accumulator 201, a second end of four-way valve 202 being in communication with one end of hydraulic cylinder 221, a third end of four-way valve 202 being in communication with the other end of hydraulic cylinder 221, and a fourth end of four-way valve 202 being configured as a fluid return end.

Specifically, four-way valve 202 may be configured as a three-position four-way solenoid valve, and after the oil pressure is built up in accumulator 201, hydraulic oil may be supplied to one end of hydraulic cylinder 221 to push rod 222 to extend out of hydraulic cylinder 221; or hydraulic oil is supplied to the other end of the hydraulic cylinder 221 to push the push rod 222 to retract the hydraulic cylinder 221, so that the push rod 222 extends and retracts, and the lifting piece 23 is lifted and lowered.

In the particular embodiment shown in fig. 4, the driving device 200 further comprises: the liquid storage tank 203, the oil pump 204, the filter 205, the overflow valve 206 and the check valve 207, the liquid storage tank 203 is communicated with the fourth end, the oil pump 204, the filter 205 and the check valve 207 are sequentially communicated and used for storing energy to the energy accumulator 201, and the overflow valve 206 is arranged on a bypass branch between the filter 205 and the check valve 207.

The hydraulic oil is stored in the liquid storage tank 203, the oil pump 204 is used for pumping the hydraulic oil into the energy accumulator 201 to enable the energy accumulator 201 to build oil pressure, the oil pump 204 can be configured as a gear oil pump, a plunger oil pump and the like, the supply of the hydraulic oil to the energy accumulator 201 is achieved through a motor which is in power connection with the oil pump, the overflow valve 206 is used for limiting the oil pressure and avoiding the over-high oil pressure, the check valve 207 is used for avoiding the backflow of the hydraulic oil, and the filter 205 is used for filtering the hydraulic oil, so that the driving device 200 is higher in working stability and reliability.

It is understood that the driving device 200 further includes: and the pressure switch 210 is used for detecting the oil pressure of the accumulator 201, feeding back a signal to the motor, controlling the motor to be started to enable the accumulator 201 to establish the oil pressure when the oil pressure of the accumulator 201 is lower than a first threshold value, and controlling the motor to be stopped to stop the supply of the hydraulic oil when the oil pressure of the accumulator 201 reaches a second threshold value.

It should be noted that, as shown in fig. 4, the hydraulic cylinder 221 has a left chamber and a right chamber, the left chamber is communicated with the second end, the right chamber is communicated with the third end, the accumulator 201 is communicated with the first end, the liquid storage tank 203 is communicated with the fourth end (i.e., the liquid return end), so that the piston of the hydraulic cylinder 221 is located at the left position, the right position and the middle position by controlling the four-way valve 202, the push rod 222 is retracted when located at the left position, the push rod 222 is extended when located at the right position, and the driving device 200 is in a stationary state when located at the middle position, so as to improve driving stability.

Further, a first speed regulating valve 208 is arranged between the accumulator 201 and the first end, and a second speed regulating valve 209 is arranged between the liquid storage tank 203 and the fourth end.

Thus, by providing the first governor valve 208, the rate at which hydraulic oil enters the left chamber can be controlled; through setting up second governing valve 209, can control the speed that hydraulic oil flows out the right cavity to avoid lifting 23 too fast rising or descending, realize the low-speed centering of waiting to lift part 300 to the large-tonnage and lift precision and security, and effectively avoid drive arrangement 200 to transship.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the utility model, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" 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 embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A centering and lifting device, comprising:

a gantry having a bottom beam;

the subassembly lifts, it is two to lift the subassembly, two it is in to lift the subassembly relative setting on the floorbar, it includes to lift the subassembly: mounting, hydraulic pressure lift and lift, the one end of mounting with the rack is fixed, the other end of mounting is provided with hydraulic pressure lift, two the free end orientation of hydraulic pressure lift extends each other, hydraulic pressure lift with lift is connected and is used for promoting lift, lift is used for lifting and treats the part of lifting.

2. The centering lift device as claimed in claim 1, wherein said hydraulic lift member comprises: the push rod is connected with a piston of the hydraulic cylinder, and the free end of the push rod is connected with the lifting piece.

3. The centering lift device of claim 2, wherein said lift member comprises: the lifting part is fixed at one end of the connecting part, which is far away from the push rod, and is used for lifting the part to be lifted.

4. The centering lift device of claim 3, wherein said connection portion comprises: the connecting plate that sets up relatively, set up two a plurality of fixed plates between the connecting plate, the fixed plate be used for with the push rod is connected, the portion of lifting sets up on the connecting plate.

5. The centering and lifting device according to claim 3, wherein said lifting portion comprises: the lifting plate is arranged in parallel with the bottom beam, and the roller is arranged at the end part of the lifting plate.

6. A centering and lifting device as claimed in claim 2, wherein said lifting member is provided with a guide wheel, and said stand comprises: the lifting assembly is arranged in the accommodating space, a guide groove matched with the guide wheel is formed in the side plate, and the extending direction of the guide groove is consistent with the moving direction of the push rod.

7. A centering lift system, comprising: centring lifting device according to any one of claims 1 to 6 and a drive device for driving the hydraulic lifting member of the centring lifting device.

8. Centering and lifting system according to claim 7, characterized in that said driving means comprise: the first end of the four-way valve is communicated with the energy accumulator, the second end of the four-way valve is communicated with one end of a hydraulic cylinder of the hydraulic lifting piece, the third end of the four-way valve is communicated with the other end of the hydraulic cylinder, and the fourth end of the four-way valve is constructed as a liquid return end.

9. The centered lift system of claim 8, wherein the drive means further comprises: the liquid storage tank is communicated with the fourth end, the oil pump, the filter and the one-way valve are sequentially communicated and used for storing energy to the energy accumulator, and the overflow valve is arranged on a bypass branch between the filter and the one-way valve.

10. The centered lift system of claim 9 wherein a first speed valve is disposed between the accumulator and the first end and a second speed valve is disposed between the reservoir and the fourth end.