Balancing weight lifting appliance special for forklift

Abstract

The invention provides a balancing weight lifting appliance special for a forklift, and belongs to the technical field of forklift design, the balancing weight lifting appliance special for the forklift comprises a lifting appliance main body and a balancing weight assembly arranged on one side of the lifting appliance main body, and further comprises a clamping assembly arranged on the other side of the lifting appliance main body relative to the balancing weight assembly, the clamping assembly comprises a connecting part connected with the lifting appliance main body and a lifting part arranged at the bottom end of the connecting part; wherein the hoisting part comprises a base body matched with the hoisting hole, a rotating shaft rotationally arranged in the axial direction of the base body and at least one supporting plate which is arranged in an inner cavity of the base body and can be driven by the rotating shaft to stretch out and draw back in the radial direction of the base body; according to the hoisting device, the counterweight can be rapidly and reliably clamped through the hoisting part, operation is easy, hoisting safety can be improved, and compared with a traditional hoisting mode that a pin shaft and a steel wire rope are matched, the hoisting device has the advantages of being reliable in hoisting, safe and efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of forklift design, in particular to a counterweight lifting appliance special for forklifts. BACKGROUND

[0002] As one of the core components of forklifts, counterweights play an extremely important role in the stability, traction and power of forklifts. During the installation and transportation of counterweights, the lifting hole is generally used for hoisting operations. At present, the hoisting method of using a steel wire rope and a pin shaft is mostly used, that is, the steel wire rope is passed through the lifting hole, and the pin shaft is used to clamp the steel wire rope at the other end of the hole. This hoisting method has great safety hazards. Whether the pin shaft or the steel wire rope breaks, or the pin shaft does not clamp the steel wire rope, will cause the counterweight to fall and cause casualties. SUMMARY

[0003] The present application provides a counterweight lifting appliance special for forklifts, which can provide quick and reliable clamping of the counterweight through the clamping assembly, thereby improving the safety of hoisting. At the same time, the counterweight lifting appliance can effectively accommodate counterweights of different weights and different spacing lifting holes through the connecting part and the counterweight assembly.

[0004] To solve the above technical problems, the present application adopts the following technical scheme:

[0005] A counterweight lifting appliance special for forklifts, comprising a lifting appliance main body and a counterweight assembly arranged on one side of the lifting appliance main body, further comprising:

[0006] A clamping assembly arranged on the other side of the lifting appliance main body relative to the counterweight assembly, the clamping assembly comprising a connecting part connected to the lifting appliance main body and a lifting part arranged at the bottom end of the connecting part;

[0007] The lifting part comprises a base body matched with the lifting hole, a rotating shaft arranged in the axial direction of the base body, and at least one support plate arranged in the inner cavity of the base body and driven by the rotating shaft to be able to expand and contract in the radial direction of the base body.

[0008] Preferably, the lifting appliance main body comprises a cross beam, a lifting ring arranged at the top center of the cross beam, and a transverse plate arranged on the lifting side of the cross beam.

[0009] Preferably, the counterweight side of the cross beam is provided with a plurality of evenly distributed counterweight holes.

[0010] Preferably, the counterweight assembly comprises a first connecting plate connected to the cross beam through a counterweight bolt, a second connecting plate vertically extending downward from the first connecting plate, and a plurality of counterweight blocks arranged on the second connecting plate.

[0011] Preferably, the clamping assembly is two groups symmetrically arranged at both ends of the cross plate, the connecting part comprises a first moving plate and a second moving plate oppositely arranged with a gap in the middle, a positioning bolt penetrating through the first moving plate and the second moving plate, and a steel wire rope fixed at the bottom of the positioning bolt.

[0012] Preferably, a plurality of positioning holes are arranged at both ends of the cross plate.

[0013] Preferably, the rotating shaft comprises a shaft body and a driving disc arranged at the bottom end of the shaft body, and a plurality of arc-shaped grooves are arranged on the driving disc and diverge outward from the center of the driving disc.

[0014] Preferably, the base body is in a columnar structure, and an installation groove matched with the rotating shaft is arranged in the base body, the installation groove comprises a first groove body arranged along the axial direction of the base body and matched with the shaft body, a second groove body arranged in communication with the first groove body and matched with the driving disc, and a plurality of third groove bodies in communication with the second groove body and penetrating through the base body.

[0015] Preferably, a plurality of the support plates can move along the third groove body under the driving of the rotating shaft to present a zooming state, and the support plate comprises a plate body capable of sliding along the third groove body and a driving column arranged on the plate body and connected with the arc-shaped groove in sliding mode.

[0016] Preferably, the lifting part further comprises a compression nut threadedly arranged on the outer wall of the base body.

[0017] From the above technical solution, the present application has the following beneficial effects:

[0018] 1. In the present application, the lifting part is connected below the hoist body through the connecting part, the base body extends into the lifting hole, and then the support plate is driven by the rotating shaft to extend radially outward from the inside of the base body, so that the support plate abuts against the bottom of the lifting hole to realize the pickup of the counterweight, and then the hoist body and the counterweight are transported together to the subsequent station by the travelling crane. In the present application, the lifting part can provide quick and reliable clamping for the counterweight, which not only is simple to operate, but also can improve the safety of hoisting, compared with the traditional lifting method using a pin shaft and a steel wire rope, has the advantages of reliable hoisting, safety and high efficiency.

[0019] 2. In the application, the rotating shaft comprises a shaft body and a driving disc, and a plurality of arc-shaped grooves are formed on the driving disc, and the support plate comprises driving columns matched with the arc-shaped grooves and a plate body, so that when the support plate needs to be extended from the inner side of the base body to the outer side, the shaft body is rotated to drive the driving disc to rotate, and since the arc-shaped grooves are divergent outward during rotation, the driving columns and the plate body are driven to slide from the inner side to the outer side of the arc-shaped grooves, so that the support plate is rotated from the inner side to the outer side of the base body, and a plurality of support plates are extended and abut against the inner wall of the lifting hole, so that the balance weight is quickly clamped to facilitate the safe lifting operation. Similarly, after the lifting is completed, the shaft body is rotated to drive the support plate to retract from the outer side to the inner side of the base body, and then the base body is pulled out upward by the connecting part to be separated from the lifting hole, and the whole lifting process is completed. As can be seen, in the application, the support plate is driven by the rotating shaft to extend and retract along the base body during clamping and releasing the balance weight, so that the whole lifting process is simple to operate, and the scheme of clamping the balance weight by the support plate can reduce the risk of falling, and compared with the traditional lifting method, it has the advantages of reliability and high safety. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A front view of the balance weight lifting device provided by the application is shown in the figure.

[0021] Figure 2 A top view of the balance weight lifting device provided by the application is shown in the figure.

[0022] Figure 3 A perspective view of the lifting part is shown in the figure.

[0023] Figure 4 A front view of the lifting part is shown in the figure.

[0024] Figure 5 A sectional view of the lifting part is shown in the figure.

[0025] Figure 6 A schematic view of the rotating shaft is shown in the figure.

[0026] Figure 7 A schematic view of the support plate is shown in the figure.

[0027] Figure 8 A schematic view of the connecting part is shown in the figure.

[0028] Figure 9 A schematic view of the counterweight assembly is shown in the figure.

[0029] Figure 10 A schematic view of the balance weight and the lifting hole thereon is shown in the figure.

[0030] In the figure: 10, the main body of the lifting appliance; 110, the crossbeam; 111, the counterweight hole; 120, the lifting ring; 130, the cross plate; 131, the positioning hole; 20, the counterweight assembly; 210, the counterweight bolt; 220, the first connecting plate; 230, the second connecting plate; 240, the counterweight block; 30, the clamping assembly; 310, the connecting part; 311, the first moving plate; 312, the second moving plate; 313, the positioning bolt; 314, the steel wire rope; 320, the lifting part; 321, the base body; 322, the rotating shaft; 3221, the shaft body; 3222, the driving disc; 3223, the arc-shaped groove; 323, the support plate; 3231, the plate body; 3232, the driving column; 324, the mounting groove; 3241, the first groove body; 3242, the second groove body; 3243, the third groove body; 325, the compression nut; 326, the handle; 327, the lifting lug; 40, the lifting hole; 50, the counterweight. DETAILED DESCRIPTION

[0031] A preferred embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0032] To achieve the above object, the embodiments of the present application adopt the following technical solutions: referring to Figure 1 , Figure 3 , Figure 4 A counterweight lifting appliance special for a forklift truck, comprising a lifting appliance main body 10 and a counterweight assembly 20 arranged on one side of the lifting appliance main body, further comprising a clamping assembly 30, specifically, the clamping assembly is arranged on the other side of the lifting appliance main body 10 relative to the counterweight assembly 20, and the clamping assembly comprises a connecting part 310 and a lifting part 320, the connecting part 310 is connected with the lifting appliance main body to realize the connecting function with the lifting appliance main body, and the lifting part 320 is arranged at the bottom end of the connecting part, wherein the lifting part comprises a base body 321, a rotating shaft 322 and a support plate 323, the base body is matched with the lifting hole 40 during use to realize the function of lifting the counterweight 50, the rotating shaft 322 is arranged along the axial direction of the base body, the number of the support plates is at least one, the support plates are arranged in the inner cavity of the base body and can move radially along the base body under the driving of the rotating shaft, during use, the lifting part is connected below the lifting appliance main body through the connecting part, the base body is extended into the lifting hole, then the support plate is driven by the rotating shaft to extend radially outward from the inside of the base body, so that the support plate abuts against the bottom of the lifting hole to realize the picking of the counterweight, then the lifting appliance main body and the counterweight are transported together to the subsequent work station by the travelling crane. In the present application, the lifting part can realize the quick and reliable clamping of the counterweight, which is not only simple in operation, but also can improve the safety of lifting, compared with the traditional lifting mode using the pin shaft and the steel wire rope, the present application has the advantages of reliable lifting, safety and high efficiency.

[0033] Referring to Figure 2, as the preferred technical scheme of the embodiment, the hoist body 10 comprises a crossbeam 110, a lifting ring 120 and a cross plate 130, the lifting ring 120 is arranged at the top center position of the crossbeam, and serves to be connected with an external travelling crane to hoist and transport the entire counterweight hoist, it should be noted that, in order to distinguish the two sides of the crossbeam 110, the two ends of the crossbeam can be respectively named as a lifting side and a counterweight side, that is, the lifting side serves to hoist and transport the counterweight, and the counterweight side is used to install a counterweight assembly to cooperate with the lifting part to stably hoist and transport the counterweight. Since the cross plate 130 in the embodiment mainly serves to install the lifting part, the cross plate 130 is arranged at the lifting side of the crossbeam.

[0034] Further, the counterweight side of the crossbeam 110 is provided with a plurality of uniformly distributed counterweight holes 111, the counterweight assembly can be moved to the corresponding counterweight hole position and fixed, so that different weights of counterweights can be adapted.

[0035] Referring to Figure 9 In some embodiments, the counterweight assembly 20 comprises a first connecting plate 220, a second connecting plate 230 and a counterweight block 240, the first connecting plate 220 is connected with the crossbeam 110 through a counterweight bolt 210, the second connecting plate 230 extends vertically downward from the first connecting plate, and specifically to the embodiment, the second connecting plate 230 extends to form an L-shaped plate structure, the counterweight block 240 is arranged on the second connecting plate, and the number of the counterweight block 240 is not limited, that is, the number of the counterweight block can be appropriately arranged according to the actual counterweight requirement.

[0036] Further, referring to Figure 2 , Figure 8In the embodiment, the top of the counterweight is provided with two symmetrical lifting holes 40, so that the clamping assembly in the embodiment is two groups symmetrically arranged at both ends of the cross plate 130. Specifically, the connecting part 310 includes a first moving plate 311, a second moving plate 312, a positioning bolt 313, and a steel wire rope 314. The first moving plate and the second moving plate are oppositely arranged and have a gap therebetween, which is used to arrange the connecting part on the cross plate 130. Specifically, in the embodiment, the first moving plate can be arranged in a U shape, and the second moving plate can be arranged in a straight plate shape. The two ends of the U-shaped first moving plate are fixedly connected with the second moving plate by bolts or other fasteners, so that the gap for mounting the cross plate is formed therebetween, thereby connecting the connecting part with the cross plate. The positioning bolt 313 is arranged through the first moving plate and the second moving plate, and the steel wire rope 314 is fixedly arranged at the bottom of the positioning bolt. In use, after the first moving plate and the second moving plate are arranged at appropriate positions of the cross plate, the positioning bolt is arranged through the first moving plate and the second moving plate, respectively. It should be noted that the positioning bolt not only has the effect of fixing the first moving plate, the second moving plate, and the cross plate, but also can fix the steel wire rope to facilitate connection and fixation with the lifting part.

[0037] Further, a plurality of positioning holes 131 are arranged at both ends of the cross plate 130, so that when different counterweights are lifted, the connecting part 310 is moved to different positioning hole positions to adapt to different spacing of the lifting holes.

[0038] Referring to Figure 6 In some embodiments, the rotating shaft 322 includes a shaft body 3221 and a driving disc 3222 arranged at the bottom end of the shaft body. The shaft body is a section of shaft that can rotate in the inner cavity of the base body. The driving disc can be a disc structure integrally formed with the shaft body, and a plurality of arc-shaped grooves 3223 are arranged on the driving disc and extend outward from the shaft center of the driving disc in a diverging manner.

[0039] Further, referring to Figure 5, in order to realize the rotation of the rotating shaft 322 along the base, the base 321 is a columnar structure, and a mounting groove 324 matched with the rotating shaft 322 is formed in the base, and the mounting groove includes a first groove body 3241, a second groove body 3242 and a third groove body 3243, the first groove body 3241 is arranged along the axial direction of the base, and the first groove body is matched with the shaft body 3221, the second groove body 3242 is arranged in communication with the first groove body, and the second groove body 3242 is matched with the driving disc 3222, the number of the third groove body 3243 is several, and the several third groove bodies are arranged in communication with the second groove body, and the third groove body 3243 is distributed through the base 321, that is, the third groove body extends outward from the second groove body and penetrates the base, forming a moving space for supporting the plate to shuttle, and it should be noted that, in order to improve the supporting effect of the supporting plate on the counterweight, the third groove body in the embodiment can be arranged as a plurality of third groove bodies uniformly distributed along the circumference of the base, so that the supporting plate can form a structure in a blooming state when extending outward from the base, so as to realize the support and limiting of the counterweight by the plurality of supporting plates.

[0040] Referring to Figure 7 , it should be noted that, since the plurality of supporting plates 323 can move along the third groove body 3243 under the driving of the rotating shaft 322 to present a zooming state, in order to realize effective driving of the supporting plate 323, the supporting plate includes a plate body 3231 and a driving column 3232, the driving column 3232 is slidably connected with the arc-shaped groove 3223, and the plate body 3231 can slide along the third groove body 3243. Initially, the supporting plate is located inside the base, and the driving column is located at the inner side of the arc-shaped groove. When the base is driven by the connecting part to enter the lifting hole of the counterweight, the rotating shaft body can be rotated counterclockwise at this time, which will synchronously drive the driving disc to rotate. Since the arc-shaped groove will present a diverging state during rotation, the driving column and the plate body will slide from the inner side of the arc-shaped groove to the outer side, so as to push the supporting plate outward from the inner side of the base. In this way, the plurality of supporting plates are extended and abut against the inner wall of the lifting hole, so as to realize rapid clamping of the counterweight, thereby facilitating safe lifting operation. After lifting is completed, the rotating shaft body is rotated clockwise, thereby driving the supporting plate to retract from the outer side of the base to the inner side, and then the base is pulled upward by the connecting part to be separated from the lifting hole. Thus, the entire lifting process is completed.

[0041] Further, referring to Figure 3 , Figure 4 , Figure 5, in order to improve the clamping effect of the support plate 323 on the balance weight, an external thread is formed on the outer wall of the base, and the lifting part 320 further comprises a compression nut 325 arranged on the outer wall of the base 321, when the support plate 323 is extended outward from the base and abuts against the lower end of the balance weight, the upper end surface of the lifting hole can be compressed by rotating the compression nut, so that the balance weight is fixed, and then the lifting device and the balance weight are transported to the subsequent station by the travelling crane, thereby improving the safety of the whole lifting operation.

[0042] Further, in order to facilitate the rotation driving of the rotating shaft 322, a handle 326 is arranged on the top of the shaft body 3221, which can drive the shaft body to rotate during use.

[0043] Meanwhile, in order to facilitate the lifting of the base 321, a lifting lug 327 is fixedly connected to the top of the base, and the end of the wire rope 314 away from the connecting part can be fixedly wound on the lifting lug 327 during use.

[0044] During use, the lifting part 320 is connected below the lifting device main body 10 through the connecting part 310, the base 321 is extended into the lifting hole 40, and then the rotating shaft 322 drives the support plate 323 to extend radially outward from the inner side of the base 321, so that the support plate 323 abuts against the bottom of the lifting hole 40, thereby achieving the pickup and clamping of the balance weight, and then the lifting device main body 10 and the balance weight 50 are transported to the subsequent station by the travelling crane. In the present application, the lifting part can provide quick and reliable clamping for the balance weight, which is not only simple to operate, but also can improve the safety of lifting, compared with the traditional lifting method using pin shaft and wire rope, which has the advantages of reliable lifting, safety and high efficiency.

[0045] The above-described embodiments are only used to describe the preferred embodiments of the present application, and do not limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope of the claims of the present application.

Claims

1. A counterweight sling for a forklift, comprising a sling body (10) and a counterweight assembly (20) provided on one side of the sling body, characterized in that: Also includes: A clamping assembly (30), the clamping assembly being arranged on the other side of the sling body (10) relative to the counterweight assembly (20), the clamping assembly comprising a connecting portion (310) connected to the sling body and a lifting portion (320) arranged at the bottom end of the connecting portion; The lifting portion includes a base (321) matched with the lifting hole (40), a rotating shaft (322) arranged to rotate along the axial direction of the base, and at least one supporting plate (323) arranged in the inner cavity of the base and driven by the rotating shaft to be able to extend and retract along the radial direction of the base.

2. The forklift-specific counterweight sling according to claim 1, characterized in that: The sling body (10) comprises a crossbeam (110), a lifting ring (120) arranged at the center of the top of the crossbeam, and a cross plate (130) arranged on the lifting side of the crossbeam.

3. The forklift-specific counterweight sling according to claim 2, characterized in that: The counterweight side of the crossbeam (110) is provided with a plurality of evenly distributed counterweight holes (111).

4. The forklift-specific counterweight sling according to claim 3, characterized in that: The counterweight assembly (20) includes a first connecting plate (220) connected to the crossbeam (110) via a counterweight bolt (210), a second connecting plate (230) extending vertically downward from the first connecting plate, and a plurality of counterweight blocks (240) arranged on the second connecting plate.

5. The forklift-specific counterweight sling according to claim 2, characterized in that: The clamping assembly is composed of two groups symmetrically arranged along the two ends of the transverse plate (130), and the connecting portion (310) includes a first movable plate (311) and a second movable plate (312) arranged opposite to each other with a gap in between, a positioning bolt (313) passing through the first movable plate and the second movable plate, and a steel wire rope (314) fixed at the bottom of the positioning bolt.

6. The counterweight sling for forklifts according to claim 5, characterized in that: Both ends of the transverse plate (130) are provided with a plurality of evenly distributed positioning holes (131).

7. The counterweight sling for forklifts according to claim 5, characterized in that: The rotating shaft (322) comprises a shaft body (3221) and a driving disc (3222) arranged at the bottom end of the shaft body. The driving disc is provided with a plurality of arc-shaped grooves (3223) radiating outwards from the axis of the driving disc.

8. The counterweight sling for forklifts according to claim 7, characterized in that: The base (321) is a columnar structure, and a mounting groove (324) is provided inside the base to cooperate with the rotating shaft (322). The mounting groove includes a first groove body (3241) arranged along the axial direction of the base and cooperating with the shaft body (3221), a second groove body (3242) connected to the first groove body and cooperating with the driving disk (3222), and a plurality of third groove bodies (3243) connected to the second groove body and distributed through the base (321).

9. The counterweight sling for forklifts according to claim 8, characterized in that: The plurality of support plates (323) can be moved along the third groove body (3243) to present a zoom state under the drive of the rotating shaft (322), and the support plates include a plate body (3231) that can slide along the third groove body (3243) and a driving column (3232) arranged on the plate body and slidably connected to the arc groove (3223).

10. The counterweight sling for forklift according to claim 9, characterized in that: The lifting portion (320) further includes a compression nut (325) threadedly disposed on the outer wall of the base (321).

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