A single handle gear shifting mechanism for a winch

Abstract

The utility model relates to a pumpkin machine technical field especially relates to a kind of single handle gear shifting mechanism of pumpkin machine. Including cover, the first rotating pin is fixed in the cover, the first rotating pin outside rotation sleeve is equipped with cross conversion head, cross conversion head is fixedly connected with the one end of first gear shift arm, the other end of first gear shift arm is rotationally connected with the first horizontal pivot of the top end of vertically arranged first gear lever, second gear shift arm is rotationally installed on cross conversion head by second rotating pin, second rotating pin is vertically arranged with the first rotating pin, the top of second gear shift arm is fixed with gear shift handle, the other end of second gear shift arm is rotationally connected with the second horizontal pivot of the top end of vertically arranged second gear lever, second horizontal pivot is concentrically arranged with the first rotating pin. Only one gear shift handle can realize the function of previous two gear shift handles, simple structure, small size, low manufacturing cost, avoid two gear shift handles when operating to occur false touch, operation is more convenient.

Description

Technical fields:

[0001] This utility model relates to the field of hoist technology, and in particular to a single-handle shifting mechanism for a hoist. Background technology:

[0002] Currently, the shifting mechanism on hoists all adopts a double-lever structure, with each lever connected to a shift handle. During operation, one shift handle can switch between two low-speed gears via the lever, while the other shift handle can switch between two high-speed gears via the lever. This type of shifting mechanism is complex, bulky, and costly to manufacture. Moreover, the two shift handles are not close together, making them prone to accidental contact during operation, which causes inconvenience. There is currently no good solution to these problems.

[0003] In summary, the aforementioned problems with the shifting mechanism of hoists have become urgent technical challenges that need to be addressed within the industry. Utility model content:

[0004] To overcome the shortcomings of the prior art, this utility model provides a single-handle shifting mechanism for hoists, which solves the problems of complex structure, high cost, and inconvenient operation of the previous hoist shifting mechanisms that used two shifting handles.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A single-handle shifting mechanism for a hoist includes a housing. A first pivot pin is horizontally fixed inside the housing. A cross-shaped shifting head is rotatably sleeved on the outside of the first pivot pin. The cross-shaped shifting head is fixedly connected to one end of a first shifting arm. The other end of the first shifting arm is rotatably connected to a first horizontal pivot at the top of a vertically positioned first shift lever. A second shifting arm is rotatably mounted on the cross-shaped shifting head via a second pivot pin. The second pivot pin is perpendicular to the first pivot pin. A shifting handle is fixed to the top of the second shifting arm. The other end of the second shifting arm is rotatably connected to a second horizontal pivot at the top of a vertically positioned second shift lever. The second horizontal pivot is concentrically arranged with the first pivot pin.

[0007] The cover is provided with a support plate, and one end of the first pivot pin passes through the support plate and is fixedly connected to the cover.

[0008] The end of the first pivot pin is provided with a limiting hole, and a limiting pin for limiting the cross-shaped conversion head is installed in the limiting hole.

[0009] The first shift lever is a straight plate shape, and the first shift lever is provided with a number of adjustment holes that cooperate with the first transverse rotating shaft.

[0010] The cross-shaped adapter includes a first sleeve fitted outside the first pivot pin and a second sleeve fitted outside the second pivot pin, with the first sleeve and the second sleeve fixedly connected by a rib plate.

[0011] The second shift lever includes an inverted U-shaped part that is rotatably connected to the second pivot pin. An L-shaped plate is provided on one side of the inverted U-shaped part, and the L-shaped plate is rotatably connected to the second transverse pivot.

[0012] The bottom of the first shift lever is rotatably connected to one end of the external shift shaft, the other end of the external shift shaft is rotatably connected to one end of the first shift lever, and the other end of the first shift lever is connected to the drive assembly.

[0013] The bottom of the second shift lever is rotatably connected to one end of the inner shift shaft, the other end of the inner shift shaft is rotatably connected to one end of the second shift lever, and the other end of the second shift lever is connected to the drive assembly.

[0014] The outer gear shift shaft is rotatably sleeved on the outside of the inner gear shift shaft.

[0015] The present invention adopts the above solution and has the following advantages:

[0016] By setting a cross-shaped converter head and a first shift arm and a second shift arm inside the housing, when the shift lever moves back and forth, it can drive the first shift arm through the second shift arm and the cross-shaped converter head. The first shift arm then drives the first shift lever to achieve the shifting function. When the shift lever moves left and right, it can directly drive the second shift lever through the second shift arm to achieve the shifting function. Only one shift lever is needed to achieve the function of two shift levers in the past. The structure is simple, the size is small, the manufacturing cost is low, and it avoids accidental collision of two shift levers during operation, making the operation more convenient. Attached image description:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is an enlarged structural diagram of the first and second shift arm sections of this utility model.

[0019] Figure 3 This is an enlarged structural diagram of the cross-shaped converter head of this utility model.

[0020] Figure 4 This is an enlarged structural schematic diagram of the second shift arm of this utility model.

[0021] In the diagram, 1. Cover, 2. First pivot pin, 3. Cross-shaped shift head, 4. First shift arm, 5. First shift lever, 6. First transverse shaft, 7. Second pivot pin, 8. Second shift arm, 9. Shift handle, 10. Second shift lever, 11. Second transverse shaft, 12. Support plate, 13. Limiting hole, 14. Adjustment hole, 15. First sleeve, 16. Second sleeve, 17. Rib plate, 18. Inverted U-shaped part, 19. L-shaped plate, 20. External shift shaft, 21. First shift lever, 22. Drive assembly, 23. Internal shift shaft, 24. Second shift lever. Detailed implementation method:

[0022] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0023] like Figure 1-4 As shown, a single-handle shifting mechanism for a hoist includes a housing 1. A first pivot pin 2 is horizontally fixed inside the housing 1. A cross-shaped shift head 3 is rotatably sleeved on the outside of the first pivot pin 2. The cross-shaped shift head 3 is fixedly connected to one end of a first shifting arm 4. The other end of the first shifting arm 4 is rotatably connected to a first horizontal pivot shaft 6 at the top of a vertically arranged first shift lever 5. A second shifting arm 8 is rotatably mounted on the cross-shaped shift head 3 via a second pivot pin 7. The second pivot pin 7 is perpendicular to the first pivot pin 2. A shift handle 9 is fixed to the top of the second shifting arm 8. The other end of the second shifting arm 8 is rotatably connected to a second horizontal pivot shaft 11 at the top of a vertically arranged second shift lever 10. The second horizontal pivot shaft 11 is concentrically arranged with the first pivot pin 2.

[0024] The cover 1 is provided with a support plate 12. One end of the first pivot pin 2 passes through the support plate 12 and is fixedly connected to the cover 1. The support plate 12 can improve the strength of the first pivot pin 2 and make the first pivot pin 2 more firmly fixed.

[0025] The end of the first pivot pin 2 is provided with a limiting hole 13, and a limiting pin is installed in the limiting hole 13 to limit the cross converter head 3, which can prevent the cross converter head 3 from slipping off the first pivot pin 2.

[0026] The first shift arm 4 is a straight plate shape, and the first shift arm 4 is provided with a number of adjustment holes 14 that cooperate with the first transverse rotating shaft 6. The position of the first transverse rotating shaft 6 in the adjustment holes 14 can be selected as needed.

[0027] The cross-shaped converter 3 includes a first sleeve 15 sleeved outside the first pivot pin 2 and a second sleeve 16 sleeved outside the second pivot pin 7. The first sleeve 15 and the second sleeve 16 are fixedly connected by a rib plate 17, and the first shifting arm 4 is fixed on the first sleeve 15.

[0028] The second shift lever 8 includes an inverted U-shaped part 18 rotatably connected to the second pivot pin 7. The second sleeve 16 is located inside the inverted U-shaped part 18. An L-shaped plate 19 is integrally provided on one side of the inverted U-shaped part 18. The L-shaped plate 19 is rotatably connected to the second transverse pivot 11.

[0029] The bottom of the first shift lever 5 is rotatably connected to one end of the external shift shaft 20, the other end of the external shift shaft 20 is rotatably connected to one end of the first shift lever 21, and the other end of the first shift lever 21 is connected to the drive assembly 22.

[0030] The bottom of the second shift lever 10 is rotatably connected to one end of the inner shift shaft 23, the other end of the inner shift shaft 23 is rotatably connected to one end of the second shift lever 24, and the other end of the second shift lever 24 is connected to the drive assembly 22.

[0031] The outer gear shift shaft 20 is rotatably sleeved on the outside of the inner gear shift shaft 23.

[0032] Working principle:

[0033] When the shift lever 9 is moved forward and backward, it sequentially drives the first sleeve 15 to rotate around the first pivot pin 2 via the inverted U-shaped part 18, the second pivot pin 7, the second sleeve 16, and the rib plate 17 of the second shift arm 8. Since the second transverse pivot pin 11 is concentrically set with the first pivot pin 2, the L-shaped plate 19 of the second shift arm 8 will rotate synchronously around the second transverse pivot pin 11 without interference. When the first sleeve 15 rotates, it drives the first shift arm 4 to move, which in turn drives the first shift lever 5 to move. The first shift lever 5 then drives the external gear shift shaft 20 to rotate, thus engaging the external gear. The shaft 20 then drives the first shift lever 21 to achieve the shifting function; when the shift lever 9 is moved left or right, the shift lever 9 can rotate around the second pivot pin 7 via the inverted U-shaped part 18 of the second shift arm 8. The L-shaped plate 19 of the second shift arm 8 directly drives the second shift lever 10 to move. The second shift lever 10 then drives the inner shift shaft 23 to rotate. The inner shift shaft 23 then drives the second shift lever 24 to move to achieve the shifting function. This utility model only requires one shift lever 9 to achieve the functions of two shift levers in the past. It has a simple structure, small size, low manufacturing cost, and is more convenient to operate.

[0034] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0035] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A single-handle shifting mechanism for a hoist, characterized in that: The device includes a housing, inside which a first pivot pin is fixed laterally. A cross-shaped conversion head is rotatably sleeved on the outside of the first pivot pin. The cross-shaped conversion head is fixedly connected to one end of a first shift arm. The other end of the first shift arm is rotatably connected to a first transverse pivot shaft at the top of a vertically arranged first shift lever. A second shift arm is rotatably mounted on the cross-shaped conversion head via a second pivot pin. The second pivot pin is perpendicular to the first pivot pin. A shift lever is fixed to the top of the second shift arm. The other end of the second shift arm is rotatably connected to a second transverse pivot shaft at the top of a vertically arranged second shift lever. The second transverse pivot shaft is concentrically arranged with the first pivot pin.

2. The single-handle shifting mechanism for a hoist as described in claim 1, characterized in that: The cover is provided with a support plate, and one end of the first pivot pin passes through the support plate and is fixedly connected to the cover.

3. The single-handle shifting mechanism for a hoist as described in claim 1, characterized in that: The end of the first pivot pin is provided with a limiting hole, and a limiting pin for limiting the cross-shaped conversion head is installed in the limiting hole.

4. The single-handle shifting mechanism for a hoist as described in claim 1, characterized in that: The first shift lever is a straight plate shape, and the first shift lever is provided with a number of adjustment holes that cooperate with the first transverse rotating shaft.

5. The single-handle shifting mechanism for a hoist as described in claim 1, characterized in that: The cross-shaped adapter includes a first sleeve fitted outside the first pivot pin and a second sleeve fitted outside the second pivot pin, with the first sleeve and the second sleeve fixedly connected by a rib plate.

6. The single-handle shifting mechanism for a hoist as described in claim 1, characterized in that: The second shift lever includes an inverted U-shaped part that is rotatably connected to the second pivot pin. An L-shaped plate is provided on one side of the inverted U-shaped part, and the L-shaped plate is rotatably connected to the second transverse pivot.

7. The single-handle shifting mechanism for a hoist according to claim 1, characterized in that: The bottom of the first shift lever is rotatably connected to one end of the external shift shaft, the other end of the external shift shaft is rotatably connected to one end of the first shift lever, and the other end of the first shift lever is connected to the drive assembly.

8. The single-handle shifting mechanism for a hoist according to claim 7, characterized in that: The bottom of the second shift lever is rotatably connected to one end of the inner shift shaft, the other end of the inner shift shaft is rotatably connected to one end of the second shift lever, and the other end of the second shift lever is connected to the drive assembly.

9. A single-handle shifting mechanism for a hoist according to claim 8, characterized in that: The outer gear shift shaft is rotatably sleeved on the outside of the inner gear shift shaft.

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