CN215364665U - Lifting mechanism with counterweight and battery replacing equipment - Google Patents

Abstract

The utility model relates to a lifting mechanism with a balance weight and battery replacement equipment. The lifting mechanism comprises: a frame and a counterweight; the power assembly comprises a motor, a connecting rod and a connecting seat, one of the connecting rod and the connecting seat is connected to the motor, the other one of the connecting rod and the connecting seat is connected to the rack, and the connecting seat is connected to the counterweight and is in threaded connection with the connecting rod; when the motor drives the connecting seat or the connecting rod to rotate, the connecting seat moves along the connecting rod to drive the counterweight part to move along the vertical direction. Because through screw drive between connecting rod pole and the connecting seat, and screw drive has great drive ratio for connecting rod and connecting seat still provide great drive ratio when playing the transmission effect, thereby can dispose the speed reducer of lower drive ratio or the less motor of power, make whole hoist mechanism with trade the electrical equipment occupation space still less, the structure is more compact.

Description

Lifting mechanism with counterweight and battery replacing equipment

Technical Field

The utility model relates to the field of battery replacement equipment, in particular to a lifting mechanism with a balance weight and battery replacement equipment.

Background

The lifting mechanism is a device commonly used in various fields, and is mainly used for vertically transporting corresponding objects from bottom to top or from top to bottom, for example, in the process of replacing a battery box of an electric heavy truck, the lifting mechanism needs to lift or descend the battery box along the vertical direction to replace the battery box.

The existing lifting mechanism comprises a rack, a counterweight and a motor, wherein the motor is connected to the counterweight through a connecting rope and used for driving the counterweight to move along the vertical direction. Under the condition of large load, in order to improve the output torque of the motor, a reduction box with larger transmission ratio needs to be correspondingly configured or the rated power of the motor needs to be increased so as to drive the counterweight to move. However, a transmission with a large transmission ratio or a motor with large power is configured, and the volume of the speed reducer or the motor is inevitably increased, so that a large installation space is occupied.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a lifting mechanism with a counterweight and a battery replacement apparatus that are more compact in structure.

To this end, the utility model provides a lifting mechanism with a counterweight, comprising:

a frame and a counterweight;

the power assembly comprises a motor, a connecting rod and a connecting seat, one of the connecting rod and the connecting seat is connected to the motor, the other one of the connecting rod and the connecting seat is connected to the rack, and the connecting seat is connected to the counterweight and is in threaded connection with the connecting rod;

when the motor drives the connecting seat or the connecting rod to rotate, the connecting seat moves along the connecting rod to drive the counterweight part to move along the vertical direction.

Preferably, the connecting rod is a screw rod, at least one end of the connecting rod is rotatably connected to the rack, and the motor is connected to the connecting rod to drive the connecting rod to rotate, so that the connecting seat moves along the vertical direction relative to the rack to drive the counterweight to move along the vertical direction.

Preferably, the connecting rod is a threaded rod, at least one end of the connecting rod is rotatably connected to the rack, and the motor is connected to the connecting rod to drive the connecting rod to rotate, so that the connecting seat moves along the vertical direction relative to the rack to drive the counterweight to move along the vertical direction.

Preferably, the connecting base is movably connected to the frame in a vertical direction to draw the weight member to move in the vertical direction under the driving of the connecting rod.

Preferably, the connecting rod along vertical direction fixed connection in the frame, the connecting seat is including rotating piece and base, rotate the piece connect in with the base, rotate the piece connect in the motor to through threaded connection in the connecting rod motor drive when rotating the piece and rotating, it drives to rotate the piece the base removes in order to drive the counterweight removes along vertical direction.

Preferably, the motor is connected to the connecting rod or the connecting socket through a transmission.

Preferably, the weight member is movably connected to the frame in a vertical direction.

In addition, the utility model also provides a battery replacement device which comprises a nacelle and the lifting mechanism, wherein the nacelle is connected to the counterweight through a connecting rope so as to pull the nacelle to move in the vertical direction when the counterweight moves.

Preferably, the device further comprises a guide wheel which is rotatably connected to the frame, one end of the connecting rope is connected to the counterweight, and the other end of the connecting rope is connected to the nacelle after passing through the guide wheel.

Preferably, the nacelle comprises a guide wheel which is rotationally connected to the nacelle and a rotational surface which abuts against the frame for guiding the nacelle to move in a vertical direction.

Compared with the prior art, the motor of the lifting mechanism with the counter weight and the battery replacing equipment is connected in the vertical direction through the connecting rod and the connecting seat driving counter weight part, the connecting rod and the connecting seat are in threaded transmission, the threaded transmission has a large transmission ratio, the connecting rod and the connecting seat can achieve the transmission effect, and meanwhile, a large transmission ratio is provided, the speed reducer with a low transmission ratio or the motor with low power can be configured, the occupied space of the whole lifting mechanism and the battery replacing equipment is less, and the structure is more compact.

Furthermore, the lifting mechanism with the balance weight and the battery replacement equipment directly drive the balance weight part through the power assembly, so that the power assembly can be arranged on the side part of the rack instead of the top part of the rack, and the problem that the mounting space on the top part of the rack is insufficient is solved.

Drawings

The utility model is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic view of the overall structure of a lifting mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a power assembly in accordance with an embodiment of the present invention;

FIG. 3 is a schematic axial view of the structure of FIG. 1;

fig. 4 is a partially enlarged schematic view of fig. 3.

Reference numerals:

100. a frame; 110. a first vertical support; 120. a second vertical support; 130. a transverse support; 140. a first bearing housing; 150. a second bearing housing; 160. a guide rail; 161. a lower slide block; 162. an upper slide block; 170. a buffer assembly; 171. a buffer fixing seat; 172. a buffer; 200. a nacelle; 210. a first component; 211. a first roller; 220. a second component; 221. a second roller; 300. connecting ropes; 400. a guide wheel assembly; 410. a first guide wheel; 420. a second guide wheel; 500. a power assembly; 510. a speed reduction transmission assembly; 511. a connecting rod; 512. a connecting seat; 5121. a nut seat; 520. a motor; 521. a coupling; 600. a counterweight member.

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.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means 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 present invention. 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.

Referring to fig. 1 and 2, the lifting mechanism includes a frame 100, a weight member 600, and a power assembly. The connecting string 300 is used to lift an object. The weight member 600 is fixedly connected to one end of the connecting rope 300 far away from the object; the power assembly 500 comprises a motor 520 and a reduction transmission assembly 510, the motor 520 is used for being fixedly connected to the frame 100 of the battery replacing device, and the reduction transmission assembly 510 is connected between the motor 520 and the counterweight 600 to control the counterweight 600 to move vertically.

Specifically, if the power source of hoist mechanism adopts motor 520, therefore, when the vertical promotion or the vertical reduction of article, motor 520 passes through speed reduction transmission assembly 510 and transmits power to weight 600 and on connecting rope 300, connects rope 300 and takes place corresponding motion to promote or reduce the article, for example the warehouse. It should be noted that, during the power transmission process of the speed reduction transmission assembly 510, the speed reduction transmission assembly 510 converts the rotary motion of the motor 520 into a linear motion, so as to control the vertical motion of the counterweight 600; also, the reduction gear assembly 510 can reduce the rotation of the motor 520 so that the weight member 600 moves at a proper speed, and thus the weight member 600 moves upward or downward at a proper speed.

In the present embodiment, the power assembly 500 directly acts on the weight member 600, and thus, the power assembly 500 may be mounted to a side portion of the frame 100 instead of the top portion of the frame 100, thereby avoiding a problem of insufficient installation space at the top portion of the frame 100.

The reduction gear assembly 510 includes a connecting socket 512 and a connecting rod 511, and the reduction gear assembly 510 serves to transmit power of the motor 520 to the weight member 600. In this embodiment, the connection rod 511 may be a screw rod or a threaded rod, and both ends thereof are rotatably connected to the frame 100 through bearing blocks. The bearing block is installed on the frame 100 and comprises a first bearing block 140 and a second bearing block 150, the connecting rod 511 is vertically installed on the frame 100, the lower end of the connecting rod 511 is installed on the first bearing block 140, and the upper end is installed on the second bearing block 150. The connecting seat 514 comprises a nut seat 5121, the nut seat 5121 is positioned between the first bearing seat 140 and the second bearing seat 150, the connecting seat 512 is fixedly connected to the nut seat 5121, therefore, the connecting seat 512 is connected to the connecting rod 511 through threads, the weight member 600 is installed on the connecting seat 512, and the end part of the connecting rope is connected to the connecting seat 512; meanwhile, a guide rail 160 is vertically fixed on the rack 100, a lower slide block 161 and an upper slide block 162 are vertically and slidably connected to the guide rail 160, the lower slide block 161 is fixedly connected to the bottom of the connecting seat 512, and the upper slide block 162 is fixedly connected to the top of the connecting seat 512, so that the weight 600 is vertically and slidably connected to the rack 100 through the lower slide block 161 and the upper slide block 162. And, the motor 520 is vertically and fixedly connected to the top of the frame 100, the driving shaft of the motor 520 is vertically arranged downwards, the driving shaft of the motor 520 is connected with the coupling 521, and the coupling 521 is connected with the top of the connecting rod 511.

Specifically, the motor 520 drives the connecting rod 511 to rotate through the coupler 521, the connecting rod 511 is in threaded connection with the nut seat 5121, and the nut seat 5121 is vertically connected to the rack 100 through the connecting seat 512 in a sliding manner, so that the nut seat 5121 vertically slides along the length direction of the connecting rod 511 to drive the connecting seat 512 to slide up and down, further drive the counterweight 600 to slide up and down, and effectively control the connecting rope 300 to lift or lower an object.

In the transmission process, after the motor 520 is decelerated by the connecting seat 512 and the connecting rod 511 through the coupling 521, the counterweight 600 is driven to move in the vertical direction, and due to the structures of the connecting seat 512 and the connecting rod 511, the calculation formula of the transmission ratio I is as follows:

I＝z/k

wherein z is the number of teeth of the connecting seat 512, and k is the number of heads of the connecting rod. If the screw thread of connecting rod 511 is single thread, then k 1, its drive ratio is the number of teeth of connecting seat 512 for connecting seat 512 and connecting rod 511 have bigger drive ratio, thereby can be in the transmission, still have great speed reduction effect, avoid using the great reduction gear of transmission ratio, make hoist mechanism's structure more compact. Moreover, the weight member 600 and the power assembly 500 may be mounted on one side of the frame 100, so that the lifting mechanism has advantages of compact overall structure, simple structure, convenient installation, etc.

In the embodiment shown in fig. 1 and 2, the motor 520 drives the connecting rod 511 to rotate. In other embodiments, the motor 520 may also drive the connecting base 512 to rotate. Specifically, the connecting seat of the reduction transmission assembly 510 comprises a rotating part and a base, the rotating part is rotatably connected to the base, the motor 520 is vertically arranged on one side of the rotating part, and the driving shaft of the motor 520 is connected with the rotating part through a gear assembly, so that the driving shaft of the motor 520 drives the rotating part to rotate through the gear assembly; simultaneously, the connecting rod is vertical to be worn to locate and is rotated the piece, and the screw thread on the connecting rod global with rotate a piece threaded connection.

Specifically, when the object is lifted, the user starts the motor 520, the motor 520 drives the rotating member to rotate, and the rotating member drives the base to move, so that the counterweight 600 is driven to move up and down. Similarly, the scheme of the utility model converts the rotation of the motor into linear motion by using the connecting rod structure, and shares part of the transmission ratio of the motor reducer (the rotating part rotates for one circle, and the linear motion distance of the screw rod is smaller) by using the large transmission ratio of the connecting rod, so that the model number of the reduction box of the motor 520 can be reduced, and the occupied space of the lifting mechanism can be reduced.

Instead of the connecting rod 511 structure, the reduction gear assembly 510 includes a rack and pinion (not shown in the drawings) to transmit the power of the motor 520 to the weight member 600. Specifically, a slide rail is vertically fixed on the rack 100, a rack is vertically arranged on the rack 100 and is slidably connected with the slide rail, the motor 520 is horizontally and fixedly connected to the rack 100, a gear is fixedly connected to a driving shaft of the motor 520, and the gear is engaged with the rack; meanwhile, a counterweight mounting seat is fixedly connected to the rack, and the counterweight 600 is fixedly mounted on the counterweight mounting seat. Specifically, the operator starts the motor 520, and the motor 520 drives the gear to rotate, and the gear is engaged with the rack, so as to drive the rack to slide up and down, and further drive the weight member 600 to move up and down, thereby controlling the movement of the connecting rope 300.

The reduction transmission assembly 510 adopts the above structure, and the weight 600 and the power assembly 500 can be installed on one side of the rack 100, so that the lifting mechanism has the advantages of compact overall structure, simple structure, convenient installation and the like, and the motor 520 and the connecting rod 511 have stable structure operation, thereby further ensuring that the objects are stably lifted and descended.

In addition, the motor 520 drives the weight part 600 to move up and down through a gear and rack structure, the diameter of the gear is small, and a large transmission ratio exists between the gear and the rack, so that the requirement on the power of the motor 520 can be reduced, the size of the motor 520 is reduced, the cost is reduced, and the overall structure is simpler.

The utility model discloses a battery replacement device, which comprises the power assembly; the device also comprises the frame 100, the guide wheel assembly 400, the connecting rope 300 and the nacelle 200, wherein the frame 100 is used for mounting a power assembly; the guide wheel assembly 400 is arranged on the frame 100; the connecting rope 300 is wound on the guide wheel assembly 400, and the power assembly 500 is fixedly connected to the connecting rope 300 and used for pulling the connecting rope 300; the pod 200 is fixedly attached to the connecting rope 300 for placement of an item.

By adopting the power assembly, the power assembly 500 directly acts on the weight 600 instead of the power assembly 500 to act on the connecting rope 300, so that the power assembly 500 can be mounted on the side part of the rack 100 instead of the top part of the rack 100, thereby avoiding the problem of insufficient mounting space on the top part of the rack 100.

In some embodiments, connecting cord 300 may be a steel cord; alternatively, the connecting string 300 may be a chain.

In some embodiments, referring to fig. 3, since the force of the power assembly 500 is directly applied to the weight 600 instead of the connection rope 300, a plurality of connection ropes 300 may be disposed between the weight 600 and the nacelle 200, and the plurality of connection ropes 300 are connected to different positions on the top of the nacelle 200, so that the plurality of connection ropes 300 can stably control the ascent and descent of the nacelle 200. As is common, four connecting ropes 300 are adopted, and the four connecting ropes 300 are respectively connected to four corners of the nacelle 200, so that the nacelle 200 can be lifted well.

In some embodiments, the lower slider 161 is fixed with the buffer assembly 170, the buffer assembly 170 includes a buffer fixing seat 171 and a buffer 172, the buffer fixing seat 171 is fixedly connected to the lower slider 161 and is located at the bottom of the weight 600, and the buffer 172 is connected to the buffer fixing seat 171 and is disposed vertically downward. As such, when the weight 600 moves downward to a certain position, the buffer 172 abuts on the ground, thereby having a buffering effect on the weight 600.

In some embodiments, referring to fig. 2, at least one guide wheel assembly 400 is disposed on each connecting rope 300, each guide wheel assembly 400 includes a first guide wheel 410 and a second guide wheel 420, the first guide wheel 410 and the second guide wheel 420 are sequentially disposed along the length direction of the connecting rope 300, the first guide wheel 410 is disposed adjacent to the counterweight 600, i.e., directly above the counterweight 600, and the second guide wheel 420 is disposed adjacent to the nacelle 200, i.e., directly above the nacelle 200.

Specifically, when the connecting rope 300 moves, the first guide pulley 410 is used for converting a vertically moving chain into a horizontal direction, and the second guide pulley 420 is used for converting a horizontally moving chain into a vertical movement; thus, the connecting rope 300 is roughly divided into a head section, a middle section and a tail section by the arrangement of the first guide wheel 410 and the second guide wheel 420, the length direction of the head section is in a vertical state by the first guide wheel 410, so that the length of the head section is adapted to the movement direction of the weight member 600, and the waste of force in other directions of the connecting rope 300 is reduced; similarly, the second guide wheel 420 makes the length direction of the tail section vertical, so that the length direction of the tail section is adapted to the moving direction of the nacelle 200, thereby reducing the waste of force in other directions of the connecting rope 300.

Further, the first guide wheel 410 and the second guide wheel 420 are on the same horizontal plane, so that the middle section is horizontal, and thus, an operator can realize the far connection in the horizontal direction by using the shorter connecting rope 300; in addition, the winding area of the connection rope 300 on the first guide wheel 410 is the same as that of the second guide wheel 420, so that the stress effect of the bending part of the connection rope 300 is the same, and the downward pressure of the connection rope 300 is uniformly shared by the first guide wheel 410 and the guide wheels.

In some embodiments, referring to fig. 3 and 4, the rack 100 includes a first vertical bracket 110, a second vertical bracket 120, and a transverse bracket 130, the first vertical bracket 110 and the second vertical bracket 120 are vertically and separately disposed, one end of the transverse bracket 130 is fixedly connected to the top of the first vertical bracket 110, the other end of the transverse bracket 130 is fixedly connected to the top of the second vertical bracket 120, and the guide wheel assembly 400 is mounted on a side wall of the transverse bracket 130.

In some embodiments, the nacelle 200 is vertically slidably connected to the first vertical support 110 and the second vertical support 120 in order to stabilize the vertical movement of the nacelle 200, so that the nacelle 200 does not horizontally shake under the action of the first vertical support 110 and the second vertical support 120 when the nacelle 200 moves vertically, thereby enabling the nacelle 200 to accurately vertically convey an object.

Further reducing the friction force when the nacelle 200 slides, in some embodiments, a first assembly 210 and a second assembly 220 are disposed on one side of the nacelle 200, the first assembly 210 includes at least two first rollers 211, the two first rollers 211 are disposed oppositely or facing oppositely, and the two first rollers 211 are connected to the frame 100 in an abutting manner; if the two first rollers 211 are oppositely arranged, part of the first rollers 211 are abutted to the vertical side wall of the first vertical support 110 close to the second vertical support 120, and the other part of the first rollers 211 are abutted to the vertical side wall of the second vertical support 120 close to the first vertical support 110, so that the left-right limiting of the nacelle 200 is realized. The second assembly 220 at least comprises two second rollers 220, two second rollers 221 are oppositely arranged or oppositely arranged, and two first rollers 211 are connected to the frame 100 in an abutting mode; if the two second rollers 221 are oppositely arranged, a part of the second rollers 221 abuts against the front side wall of the first vertical bracket 110, and the other part of the second rollers 221 abuts against the rear side wall of the second vertical bracket 120, so that the front and rear limit of the nacelle 200 is realized. In summary, it can be seen that a guide channel is formed between the first roller 211 and the second roller 221, and the guide channel is slidably connected to the frame 100.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims (10)

1. A lifting mechanism with a counterweight, comprising:

a frame and a counterweight;

the power assembly comprises a motor, a connecting rod and a connecting seat, one of the connecting rod and the connecting seat is connected to the motor, the other one of the connecting rod and the connecting seat is connected to the rack, and the connecting seat is connected to the counterweight and is in threaded connection with the connecting rod;

when the motor drives the connecting seat or the connecting rod to rotate, the connecting seat moves along the connecting rod to drive the counterweight part to move along the vertical direction.

2. The weighted lift mechanism of claim 1, wherein the connecting rod is a lead screw having at least one end rotatably connected to the frame, and the motor is connected to the connecting rod to drive the connecting rod to rotate, such that movement of the connecting base in a vertical direction relative to the frame moves the weight member in a vertical direction.

3. The weighted lift mechanism of claim 1, wherein the connecting rod is a threaded rod having at least one end rotatably connected to the frame, and the motor is connected to the connecting rod to drive the connecting rod to rotate so that the connecting socket moves vertically relative to the frame to move the weight member vertically.

4. A weighted lifting mechanism according to claim 2 or 3 wherein the connecting socket is vertically movably connected to the frame to draw the weight member to move vertically under the drive of the connecting rod.

5. The weighted lift mechanism of claim 1, wherein the connecting rod is fixedly connected to the frame in a vertical direction, the connecting base includes a rotating member and a base, the rotating member is rotatably connected to the base, the rotating member is connected to the motor and is threadedly connected to the connecting rod, and when the motor drives the rotating member to rotate, the rotating member drives the base to move to drive the weight member to move in the vertical direction.

6. A weighted lifting mechanism according to claim 1 wherein the motor is connected to the connecting rod or connecting socket via a transmission.

7. The lift mechanism of claim 1, wherein the counterweight is movably connected to the frame in a vertical direction.

8. An electric converter apparatus comprising a pod, characterized in that it further comprises a lifting mechanism according to any of claims 1-7, said pod being connected to said counterweight by a connecting rope to pull said pod to move in a vertical direction when said counterweight moves.

9. The battery swapping apparatus as in claim 8, further comprising a guide wheel rotatably connected to the frame, wherein the connecting rope is connected to the counterweight at one end, passes around the guide wheel, and is connected to the pod at the other end.

10. The swapping device of claim 9, wherein the pod comprises a guide wheel rotationally coupled to the pod and a rotational surface abutting the frame to guide the pod to move in a vertical direction.

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