Hand-cranking self-locking winch lifting frame

Abstract

The utility model discloses a hand-cranking self-locking winch lifting frame which comprises a stand column, an inserting barrel, a lifting arm, an adjusting supporting arm and a height adjusting plate, a connecting bottom plate is fixed to the bottom of the inserting barrel, a connecting hole is formed in the connecting bottom plate, a bearing seat is arranged in the inserting barrel, and a tapered roller bearing and a deep groove ball bearing are arranged in the bearing seat from top to bottom. The lower end of the stand column is matched with the inserting cylinder in an inserting mode, the lower end face of the stand column is connected with the upper end face of the tapered roller bearing in a pressing mode, the upper end of the stand column is hinged to the rear portion of the suspension arm, a pulley is arranged at the front end of the suspension arm, a hand-cranking self-locking winch is arranged at the rear end of the suspension arm, and a sling of the hand-cranking self-locking winch bypasses the pulley and a height adjusting plate to be fixed to the outer wall face of the stand column. Adjusting holes are formed in the height adjusting plate at intervals in the longitudinal direction, the upper end of the adjusting supporting arm is hinged to the middle of the suspension arm, and the lower end of the adjusting supporting arm is connected with the height adjusting plate through connecting pieces penetrating through the adjusting holes. The lifting device is simple in structure, labor-saving in rotation, adjustable in lifting height and good in use flexibility.

Description

Technical Field

[0001] This utility model relates to a lifting frame, and more particularly to a hand-cranked self-locking winch lifting frame. Background Technology

[0002] Most lifting frames on the market are fixed structures, meaning the boom and column are fixed together by welding. This makes it impossible to adjust the height and angle, resulting in poor flexibility in use. Furthermore, they are not detachable, making installation and transportation inconvenient and significantly limiting their application.

[0003] Chinese Patent No. CN211569913U, authorized on September 25, 2020, discloses a detachable and easily adjustable heavy-duty water lifting device, comprising: a lifting frame, a suspension arm, a hand-cranked winch, a steel wire rope, an open anchor hook, a plug, and a rotating handle. The lifting frame is mounted on the plug, and a guide wheel fixing seat is provided on the top of the lifting frame. The hand-cranked winch is located on one side of the lifting frame. The suspension arm is mounted on the guide wheel fixing seat and extends forward. Several adjustment limiting holes are spaced apart along the length of the suspension arm. Several fixing limiting holes corresponding to the adjustment limiting holes are spaced apart on the guide wheel fixing seat. A positioning pin is provided on the guide wheel fixing seat that passes through the fixing limiting holes and the corresponding adjustment limiting holes. The open anchor hook is located at the front end of the steel wire rope. The lifting device has the following defects: (1) The rotation of the lifting frame is achieved by the insertion and connection of the rotating drum and the insert drum. When the heavy object is lifted, the friction is large and the rotation is difficult; (2) The height cannot be adjusted and it cannot be used in spaces with low height, thus limiting its application. Utility Model Content

[0004] This invention aims to solve the aforementioned problems of existing lifting devices by providing a hand-cranked self-locking winch lifting frame that is simple in structure, requires little effort to rotate, has an adjustable lifting height, and offers good flexibility in use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A hand-cranked self-locking winch lifting frame of the present invention includes a column, a cylinder, a boom, an adjustable support arm, and a height adjusting plate. A connecting base plate is fixed to the bottom of the cylinder, and a connecting hole is provided on the connecting base plate. A bearing seat is provided inside the cylinder, and a tapered roller bearing and a deep groove ball bearing are provided inside the bearing seat from top to bottom. The lower end of the column is inserted into the cylinder, and the lower end face of the column is pressed against the upper end face of the tapered roller bearing. The upper end of the column is hinged to the rear part of the boom. A pulley is provided at the front end of the boom, and a hand-cranked self-locking winch is provided at the rear end of the boom. The sling of the hand-cranked self-locking winch passes around the pulley. The height adjusting plate is fixed to the outer wall of the column, and an adjusting hole is provided at intervals along the longitudinal direction on the height adjusting plate. The upper end of the adjustable support arm is hinged to the middle part of the boom, and the lower end of the adjustable support arm is connected to the height adjusting plate through a connector passing through the adjusting hole. In this invention, the height of the boom is adjusted by cooperating with the support arm and the height adjustment plate, thus enabling the invention to be used in spaces at different heights and broadening its application scenarios. The combination of tapered roller bearings and deep groove ball bearings provides the column with good load-bearing capacity and smooth, flexible rotation during hoisting, making column rotation less strenuous. The hand-cranked self-locking winch is a conventional structure in this field. The height adjustment plate also acts as a reinforcing plate, preventing the column from deforming under hoisting stress.

[0006] Preferably, a tensioning shaft is fixed to the lower end of the column. The tensioning shaft extends into the tapered roller bearing and the deep groove ball bearing. A fastening plate is provided on the lower side of the lower end face of the deep groove ball bearing. The tensioning shaft is connected to the fastening plate as a whole by a tensioning screw, so that the lower end face of the column is pressed against the upper end face of the tapered roller bearing. Through the cooperation of the tensioning shaft, tensioning screw, and fastening plate, the column can always be pressed against the tapered roller bearing and is not easy to loosen.

[0007] Preferably, the lower end of the bearing housing is open, and the lower opening of the bearing housing is exposed outside the base plate. This structural design facilitates the installation and removal of the tensioning screws.

[0008] Preferably, a reinforcing plate is provided between the insert and the base plate, and the reinforcing plate is provided with a lifting hole.

[0009] Preferably, the rear end of the boom is provided with a hand-cranked self-locking winch mounting base, and the hand-cranked self-locking winch is fixed on the hand-cranked self-locking winch mounting base.

[0010] Preferably, the rear of the boom is provided with a hinge seat, which is connected to the upper end of the column by a hinge bolt.

[0011] Preferably, a handle is fixed to the hinge bolt.

[0012] Preferably, the lower end of the adjustable support arm is fixed with a connecting ear plate, and the adjustable support arm is provided with a guide notch for the height adjustment plate to pass through. The connecting ear plate is connected to the height adjustment plate through a connector.

[0013] Preferably, the connector is a connecting bolt.

[0014] Therefore, this utility model has the following beneficial effects:

[0015] (1) The height of the boom is adjusted by adjusting the support arm and the height adjustment plate, so that the present invention can be used in spaces of different heights, and the application scenarios are more diverse;

[0016] (2) Through the combination of tapered roller bearings and deep groove ball bearings, the column has a good load capacity and the column rotates smoothly and flexibly during hoisting, making the column rotation more labor-saving. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is a schematic diagram showing the assembly of the column, the insert, and the height adjustment plate.

[0019] Figure 3 yes Figure 2 The exploded diagram.

[0020] Figure 4 yes Figure 3 A sectional view.

[0021] Figure 5 It is a 3D view of the adjustable support arm.

[0022] In the diagram: 1. Column; 2. Insert; 3. Boom; 4. Adjustable support arm; 5. Height adjustment plate; 6. Connecting base plate; 7. Connecting hole; 8. Bearing seat; 9. Tapered roller bearing; 10. Deep groove ball bearing; 11. Pulley; 12. Hand-cranked self-locking winch; 13. Adjusting hole; 14. Connecting piece; 15. Tensioning shaft; 16. Fastening plate; 17. Tensioning screw; 18. Reinforcing plate; 19. Lifting hole; 20. Hand-cranked self-locking winch mounting base; 21. Hinge seat; 22. Hinge bolt; 23. Handle; 24. Connecting ear plate; 25. Guide notch. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1The hand-cranked self-locking winch lifting frame shown includes a column 1, a cylinder 2, a boom 3, an adjustable support arm 4, and a height adjusting plate 5. A connecting base plate 6 is fixed to the bottom of the cylinder. A reinforcing plate 18 is fixed circumferentially between the cylinder and the base plate. The reinforcing plate has lifting holes 19. Connecting holes 7 are located at the four corners of the connecting base plate. The lower end of the column is inserted into the cylinder. A bearing seat 8 (e.g., ...) is provided inside the cylinder. Figure 2-4 As shown), a tapered roller bearing 9 and a deep groove ball bearing 10 are arranged from top to bottom inside the bearing housing. A tensioning shaft 15 is fixed to the lower end of the column, extending into the tapered roller bearing and the deep groove ball bearing. A fastening plate 16 is provided on the lower side of the lower end face of the deep groove ball bearing. The tensioning shaft is connected to the fastening plate as a whole by a tensioning screw 17, so that the lower end face of the column is pressed against the upper end face of the tapered roller bearing. The lower end of the bearing housing is open, and the lower end opening of the bearing housing is exposed outside the base plate. A hinge seat 21 is provided at the rear of the boom. The hinge seat is connected to the upper end of the column by a hinge bolt 22. A handle 23 is fixed to the connecting bolt. A pulley 11 is provided at the front end of the boom. A hand-cranked self-locking winch mounting base 20 is fixed to the rear end of the boom. A hand-cranked self-locking winch 12 is installed on the hand-cranked self-locking winch mounting base. The sling of the hand-cranked self-locking winch passes over the pulley. A height adjustment plate is fixed to the outer wall of the column. Adjustment holes 13 are provided at intervals along the longitudinal direction on the height adjustment plate. The upper end of the adjustment support arm is hinged to the middle of the boom. A connecting ear plate 24 is fixed to the lower end of the adjustment support arm. There is a pair of connecting ear plates. A guide notch 25 is provided on the adjustment support arm for the height adjustment plate to pass through (e.g., ...). Figure 5 As shown in the figure, the connecting ear plate is connected to the height adjustment plate through the connecting piece 14 passing through the adjustment hole. The connecting piece is a connecting bolt.

[0025] The method of using this utility model is as follows: According to the hoisting height, pull out the connector (connecting bolt), slide the lower end of the adjustable support arm along the height adjustment plate to the corresponding adjustment hole, insert the connector into the adjustment hole, and fix the base plate to the ground or other working surface through the cooperation of the connecting hole and the bolt, and then hoisting can be carried out; when it is necessary to further adjust the hoisting height, hold the handle, pull out the connector, and operate according to the above steps.

[0026] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A hand-cranked self-locking winch lifting frame, characterized in that, The system includes a column (1), a tube (2), a boom (3), an adjustable support arm (4), and a height adjustment plate (5). The bottom of the tube is fixed with a connecting base plate (6), and the connecting base plate has a connecting hole (7). The tube is equipped with a bearing seat (8), and the bearing seat has a tapered roller bearing (9) and a deep groove ball bearing (10) arranged from top to bottom. The lower end of the column is inserted into the tube, and the lower end face of the column is pressed against the upper end face of the tapered roller bearing. The upper end of the column is hinged to the rear of the boom. The front end of the boom is equipped with a pulley (11), and the rear end of the boom is equipped with a hand-cranked self-locking winch (12). The sling of the hand-cranked self-locking winch passes around the pulley. The height adjustment plate is fixed to the outer wall of the column, and the height adjustment plate has adjustable holes (13) spaced longitudinally. The upper end of the adjustable support arm is hinged to the middle of the boom, and the lower end of the adjustable support arm is connected to the height adjustment plate through a connector (14) passing through the adjustable hole.

2. A hand-operated self-locking winch hoisting bracket according to claim 1, characterised in that, The lower end of the column is fixed with a tensioning shaft (15), which extends into the tapered roller bearing and the deep groove ball bearing. The lower end face of the deep groove ball bearing is provided with a fastening plate (16). The tensioning shaft is connected to the fastening plate by a tensioning screw (17) to form a whole, so that the lower end face of the column is pressed against the upper end face of the tapered roller bearing.

3. A hand powered self locking winch hoist stand according to claim 2, wherein, The lower end of the bearing housing is open, and the lower end opening of the bearing housing is exposed outside the base plate.

4. A hand powered self locking winch hoist stand according to claim 1 wherein, A reinforcing plate (18) is provided between the insert and the base plate, and a lifting hole (19) is provided on the reinforcing plate.

5. A hand powered self locking winch hoist stand according to claim 1 wherein, The rear end of the boom is provided with a hand-cranked self-locking winch mounting base (20), and the hand-cranked self-locking winch is fixed on the hand-cranked self-locking winch mounting base.

6. A hand powered self locking winch hoist stand according to claim 1 wherein, The rear of the boom is provided with a hinge seat (21), which is connected to the upper end of the column by a hinge bolt (22).

7. A hand powered self locking winch hoist stand according to claim 6 wherein, A handle (23) is fixed to the hinge bolt.

8. A hand powered self locking winch hoist stand according to claim 1 wherein, The lower end of the adjustable support arm is fixed with a connecting ear plate (24), and the adjustable support arm is provided with a guide notch (25) for the height adjustment plate to pass through. The connecting ear plate is connected to the height adjustment plate through a connector.

9. A hand powered self locking winch hoist stand according to claim 8, wherein, The connecting component is a connecting bolt.

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