Clamping type lifting appliance

Abstract

The utility model relates to the technical field of machining, and provides a clamping type hanger which comprises an end cover, a connecting bolt, a hanger, a nut, a gasket, a support, a base, a worm, a sliding check ring, a right clamp, a worm gear combination, a left clamp and a reset spring. Wherein an end cover is arranged on the base; a worm gear combination is mounted in the base; the worm gear combination comprises an upper large worm gear and a lower small gear; the L-shaped left clamp and the L-shaped right clamp are respectively meshed with pinions of the worm gear combination through straight teeth; the worm is meshed with a large worm gear at the upper part of the worm gear combination; the support is installed on the side of the base. The sliding check ring is sleeved on the worm and is positioned inside the bracket; the reset spring is sleeved on the worm and is positioned on the inner side of the sliding check ring; the end cover is provided with a connecting bolt, a hanging ring, a nut and a gasket. The self-locking crawler belt has the advantages that the tightening process and the self-locking effect can be achieved, the complex problem of crawler belt binding parts is solved, and the production preparation time is greatly shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a clamping type hanger used for hoisting blanks. Background Art

[0002] Before machining, the blank needs to be placed on the machine tool workbench. For small and medium-sized parts, the operator can hold the blank from the pallet and place it directly on the workbench. However, for large and heavy blanks, it is impossible to lift the blank directly and place it in the corresponding position by manual operation, and it is necessary to use lifting tools. For magnetic heavy objects, strong magnetic lifting tools can be used to quickly lift and transport the workpiece. For other heavy objects that are not magnetic, such as aluminum alloy blank plates, strong magnetic lifting tools cannot be used. The only way to lift the heavy objects is to tie them with ropes. The process is cumbersome, so within the weight limit, workers often use manpower to move heavy objects to the machine tool. In the long run, this poses a great threat to the health of workers. Utility Model Content

[0003] The technical problems of the utility model are:

[0004] For heavy objects that are not magnetic, such as aluminum alloy blank plates, strong magnetic lifting tools cannot be used, so the only way to lift the heavy objects is to tie them up with ropes. The process is cumbersome, so within the weight limit, workers often use manpower to move heavy objects to machine tools. In the long run, this poses a great threat to workers' health.

[0005] The purposes of this utility model are:

[0006] For heavy objects that are not magnetic, it can achieve simple, stable and reliable lifting process.

[0007] The technical solution of the utility model is:

[0008] A clamping type sling is proposed, comprising: an end cover 1, a connecting bolt 2, a lifting ring 3, a nut 4, a gasket 5, a bracket 6, a base 7, a worm 8, a sliding retaining ring 9, a right clamp 10, a worm gear combination 11, a left clamp 12, and a reset spring 13, wherein: the base 7 is provided with an end cover 1; the base 7 is provided with a worm gear combination 11; the worm gear combination 11 is installed inside the base 7; the worm gear combination 11 comprises a large worm gear at the top and a small gear at the bottom; the L-shaped left clamp 12 and the right clamp 10 are respectively meshed with the small gear of the worm gear combination 11 through spur teeth; the worm 8 is meshed with the large worm gear at the top of the worm gear combination 11; the bracket 6 is installed on the side of the base 7; the sliding retaining ring 9 is sleeved on the worm 8 and is located inside the bracket 6; the reset spring 13 is sleeved on the worm 8 and is located on the inner side of the sliding retaining ring 9; the end cover 1 is provided with a connecting bolt 2, a lifting ring 3, a nut 4, and a gasket 5.

[0009] The advantages and beneficial effects of the utility model are:

[0010] The utility model relates to a clamping sling, which solves the problem of complex lifting of heavy blanks. Before mechanical processing, the blank needs to be placed on the machine tool workbench. For heavy blanks, the blank is usually tied tightly by a crawler, and then the lifting process of the blank is realized by a hook and a crane. Due to the limited number of cranes on site, conflicts will occur during use, and the crawler tying process takes up a lot of production preparation time, and the safety factor is directly related to the operator's experience. This device amplifies the manual force by using a worm gear transmission mechanism, and acts on the left and right clamping spur gear parts through the worm gear combination to realize the tightening process, and by controlling the positional relationship between the sliding retaining ring and the bracket, the reset spring can achieve a self-locking effect, thereby solving the complex process of crawler tying parts, and the production preparation time is also greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solution of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the embodiments of the utility model. It is obvious that the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 This is a structural schematic diagram of the appearance of a clamping type sling of the utility model;

[0013] Figure 2 It is a schematic diagram of the internal structure of a clamping type sling of the utility model;

[0014] Figure 3 It is a schematic diagram of the installation of the worm 8, the return spring 13 and the sliding retaining ring 9 of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the parts of the bracket 6 of the utility model;

[0016] Figure 5 It is a schematic structural diagram of the parts of the sliding retaining ring 9 of the utility model;

[0017] Figure 6 It is a structural schematic diagram of the parts of the worm gear assembly 11 of the utility model;

[0018] Figure 7 The left clamp 12 and the right clamp 10 of the utility model are symmetrical structures.

[0019] Among them: 1. End cover 2. Connecting bolt 3. Lifting ring 4. Nut 5. Washer 6. Bracket 7. Base 8. Worm 9. Sliding retaining ring 10. Right clamp 11. Worm gear combination 12. Left clamp 13. Reset spring, 14 Hexagonal structure. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other, and the embodiments can be referenced and cited to each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Figure 1 This is a structural schematic diagram of the appearance of a clamping type sling of the utility model; Figure 2 It is a schematic diagram of the internal structure of a clamping type sling of the utility model; Figure 3 It is a schematic diagram of the installation of the worm 8, the return spring 13 and the sliding retaining ring 9 of the utility model; Figure 4 It is a structural schematic diagram of the parts of the bracket 6 of the utility model; Figure 5 It is a schematic structural diagram of the parts of the sliding retaining ring 9 of the utility model; Figure 6 It is a structural schematic diagram of the parts of the worm gear assembly 11 of the utility model; Figure 7 The left clamp 12 and the right clamp 10 of the utility model are symmetrical structures.

[0023] refer to Figures 1 to 7A clamping hanger of the utility model may include: an end cover 1, a connecting bolt 2, a lifting ring 3, a nut 4, a gasket 5, a bracket 6, a base 7, a worm 8, a sliding retaining ring 9, a right clamp 10, a worm gear combination 11, a left clamp 12, and a reset spring 13, wherein: an end cover 1 is provided on the base 7; a worm gear combination 11 is installed inside the base 7; the worm gear combination 11 includes a large worm gear at the top and a small gear at the bottom; the L-shaped left clamp 12 and the right clamp 10 are respectively meshed with the small gear of the worm gear combination 11 through spur teeth; the worm 8 is meshed with the large worm gear at the top of the worm gear combination 11; the bracket 6 is installed on the side of the base 7; the sliding retaining ring 9 is sleeved on the worm 8 and is located inside the bracket 6; the reset spring 13 is sleeved on the worm 8 and is located on the inner side of the sliding retaining ring 9; the end cover 1 is provided with a connecting bolt 2, a lifting ring 3, a nut 4, and a gasket 5.

[0024] In one embodiment, the end cover 1 includes a bolt hole, which is used in conjunction with the connecting bolt 2 to connect the clamping hanger into a unified whole. Wherein: the end cover 1 includes a threaded hole, which is used in conjunction with the lifting ring 3 and the connecting bolt 2. The right clamp 10 and the left clamp 12 are left-right symmetrical structures. The base 7 includes a semicircular groove structure, which is configured to place the worm 8 to achieve the rotation function. : The middle part of the worm 8 has a threaded part, and the end is provided with an external hexagonal structure. The sliding retaining ring 9 has a hexagonal hole inside, a cylinder at one end of the outside, and an external hexagonal shaft at the other end. The hexagonal hole is sleeved on the external hexagonal shaft at the front end of the worm 8, and the external hexagon is sleeved in the hexagonal hole of the bracket 6, and the matching relationship is a clearance fit.

[0025] In one embodiment, the end cover 1 includes a bolt hole, which is used in conjunction with the connecting bolt to connect the device into a unified whole. It also includes a threaded hole, which is used in conjunction with the lifting ring 3 and the bracket 6, and the middle high-precision through hole is the positioning hole of the worm gear combination 11. The lifting ring 3 includes an annular structure and is suspended on the crane hook. The bottom includes an external thread structure, which is connected to the internal thread hole of the end cover. The bracket 6 includes 4 through holes, which are used in conjunction with the connecting bolt to connect the bracket 6 to the end cover 1. It also includes an internal hexagonal structure 14, which maintains a relative position relationship with the sliding retaining ring 9 to achieve a self-locking function. The base 7 includes a semicircular groove structure for placing the worm 8 to achieve a rotation function. It also includes a connecting bolt hole and a positioning hole for the worm gear combination 11. The positioning hole has strict coaxiality requirements with the positioning hole of the worm gear combination in the end cover 1 to ensure that the worm gear combination 11 rotates smoothly in the axial direction without jamming. The worm 8 includes a threaded portion, which cooperates with the worm gear combination 11 as the main component for transmitting torque. The end includes an outer hexagonal structure, which is used for the tightening process of the socket wrench. The sliding retaining ring 9, the inner hexagonal structure is sleeved on the inner hexagonal structure of the front end of the worm 8, and the outer hexagonal structure 15 cooperates with the inner hexagonal structure of the bracket 6, and the self-locking function can be achieved when the relative positions match. The outer cylindrical structure cooperates with the circular hole of the bracket 6 to ensure the coaxiality accuracy of the two. The right clamp 10 and the left clamp 12 are left-right symmetrical structures and are the main components for clamping the blank. The spur gear structure is designed to interact with the worm gear combination 11 to achieve the lateral feed movement of the right clamp 10 and the left clamp 12 to meet the clamping state of blanks of different sizes.

[0026] The worm gear assembly 11 includes a large worm gear part, which interacts with the worm 8 to transmit torque. It also includes a small gear part, which interacts with the spur gear parts of the right clamp 10 and the left clamp 12. The large and small gears are connected through an intermediate gear shaft, and the gear shaft is fixed in the worm gear assembly mounting hole of the end cover 1 and the base 7 to realize the rotation of the worm gear assembly 11.

[0027] When in use, the socket wrench is put on the outer hexagonal end of the worm 8. At this time, the end face of the socket wrench will push the sliding retaining ring 9 toward the inside of the device. At this time, the outer hexagonal part 15 of the sliding retaining ring 9 will be disengaged from the inner hexagonal part 14 of the bracket 6, and the limiting relationship is released. At this time, the socket wrench can be turned to drive the worm 8 to rotate, and the worm 8 drives the large worm gear in the worm gear assembly 11 to rotate around the gear shaft, thereby driving the small gear to rotate. The small gear acts on the spur gear part of the right clamp 10 and the left clamp 12, so that the right clamp 10 and the left clamp 12 move relative to each other, and the clamping distance is adjusted to meet the size requirements of the blank. This process can realize the clamping process of the clamping hanger and the blank. When the clamping process is completed, remove the socket wrench and rotate the outer cylindrical part of the sliding retaining ring so that the relative position of its outer hexagonal structure 15 and the inner hexagonal part 14 of the bracket 6 coincide. At this time, the reset spring can reset the sliding retaining ring 9 to the initial position, and the outer hexagonal structure 15 of the sliding retaining ring 9 interacts with the inner hexagonal part 14 of the bracket 6 to achieve a self-locking function.

[0028] The utility model provides a clamping type hoist for hoisting blanks. The worm gear structure amplifies the torque, and the worm gear assembly acts on the left and right clamping spur gear parts to realize the lateral feeding movement, thereby realizing the clamping process of the part blank. The internal hexagonal structure of the bracket is used in conjunction with the external hexagonal structure of the sliding retaining ring. When the clamping effect is achieved, the sliding retaining ring is moved to make the relative position of the external hexagonal structure and the internal hexagonal structure of the bracket coincide. Under the action of the reset spring, the sliding retaining ring is reset to achieve a self-locking effect. The crawler and the hook act on the lifting ring of the device, and the device and the blank are hoisted as a whole by a crane to realize the hoisting process.

[0029] This device amplifies torque through worm gear transmission, obtains greater clamping force by applying a smaller external force, and thus clamps the blank to achieve the lifting process. The outer hexagonal structure at the front end of the worm is screwed by a socket wrench to drive the worm to rotate, thereby transmitting the torque to the worm gear combination. The worm gear combination acts on the left and right clamped spur gear parts through the bottom pinion, pushing the left and right clamps to perform lateral feed movement to achieve the lifting process of the part blank. When the clamping effect is achieved, rotate the sliding retaining ring so that its outer hexagonal structure matches the position of the inner hexagonal groove of the bracket. Under the action of the reset spring, push the sliding retaining ring into the bracket's groove to achieve a self-locking process, preventing the worm from rotating under the action of external force and causing changes in the clamping force.

[0030] It should be noted that the above-mentioned process operations can be applied in combination to different degrees. For the sake of simplicity, the implementation methods of various combinations are not described in detail. Technical personnel in this field can flexibly adjust the order of the above-mentioned operating steps according to actual needs, or flexibly combine the above-mentioned steps.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the utility model, and these modifications or substitutions should be included in the protection scope of the utility model.

Claims

1. A clamping type sling, characterized in that: include: An end cover (1), a connecting bolt (2), a lifting ring (3), a nut (4), a gasket (5), a bracket (6), a base (7), a worm (8), a sliding retaining ring (9), a right clamp (10), a worm gear assembly (11), a left clamp (12), and a reset spring (13), wherein: the base (7) is provided with the end cover (1); the base (7) is provided with a worm gear assembly (11); the worm gear assembly (11) comprises a large worm gear at the top and a small gear at the bottom; the L-shaped left clamp (12 ) and the right clamp (10) are respectively meshed with the small gear of the worm gear assembly (11) through straight teeth; the worm (8) is meshed with the large worm gear on the upper part of the worm gear assembly (11); the bracket (6) is installed on the side of the base (7); the sliding retaining ring (9) is sleeved on the worm (8) and is located inside the bracket (6); the return spring (13) is sleeved on the worm (8) and is located on the inner side of the sliding retaining ring (9); the end cover (1) is provided with a connecting bolt (2), a lifting ring (3), a nut (4), and a gasket (5).

2. The clamping type sling according to claim 1, characterized in that: in: The end cover (1) includes bolt holes, which are used in conjunction with the connecting bolts (2) to connect the clamping type sling into a unified whole.

3. The clamping type sling according to claim 1, characterized in that: in: The end cover (1) includes a threaded hole for use with a lifting ring (3) and a connecting bolt (2).

4. The clamping type sling according to claim 1, characterized in that: in: The right clamp (10) and the left clamp (12) are bilaterally symmetrical structures.

5. The clamping type sling according to claim 1, characterized in that: in: The base (7) comprises a semicircular groove structure and is configured to place a worm (8) to achieve a rotation function.

6. The clamping type sling according to claim 1, characterized in that: in: The middle part of the worm (8) is provided with a threaded portion, and the end thereof is provided with an external hexagonal structure.

7. The clamping type lifting device according to any one of claims 1 to 6, characterized in that: in: The sliding retaining ring (9) has a hexagonal hole inside, a cylinder at one end outside and an external hexagonal shaft at the other end. The hexagonal hole is sleeved on the external hexagonal shaft at the front end of the worm (8), and the external hexagonal shaft is sleeved in the hexagonal hole of the bracket (6), and the matching relationship is a clearance fit.

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