Chain block capable of preventing chain from being blocked

Abstract

The chain block comprises a block body, an extension shield is installed at one end of the block body, rotating rods are rotationally connected to the interior of the block body and the interior of the extension shield, rotating wheels are fixedly connected to the positions, corresponding to the interior of the block body and the interior of the extension shield, of the outer sides of the rotating rods in a sleeved mode respectively, and the rotating wheels are fixedly connected to the rotating rods in a sleeved mode. The chain hoist is scientific and reasonable in structure and safe and convenient to use, the chain hoist is provided with a lubrication smearing mechanism, a telescopic sleeve rod is pushed to extend through the telescopic characteristic of a tensioning spring, a pressing plate slides and descends in an oil storage tank, the chain hoist is convenient to use, and the chain hoist is convenient to use. Lubricating oil in the oil storage tank is extruded, the lubricating oil is forced to enter a transverse pipe through a connecting pipe and then is fed into an oil outlet pipe, meanwhile, the lubricating oil slowly seeps out through an adsorption cotton pad on a fixing ring, and the inner sides of a lifting chain and a hand-pulled chain which pass through the lubricating oil are smeared.

Description

Technical Field

[0001] The utility model relates to the technical field of hand chain hoists, in particular to a hand chain hoist that prevents chain jamming. Background Art

[0002] The hand chain hoist includes a lifting chain and a hand chain. The hand chain drives the long shaft to rotate, and then transmits the torque to the lifting chain through the long shaft, thereby achieving the lifting of heavy objects;

[0003] However, the chain of the existing hand hoist is prone to rust during use, so the chain is prone to get stuck during the pulling process, affecting the lifting effect. Therefore, in order to avoid the above technical problems, it is necessary to provide a hand hoist that prevents chain jamming to overcome the above defects in the prior art. Utility Model Content

[0004] The utility model provides a hand chain hoist which prevents chain jamming, and can effectively solve the problem in the above background technology that the chain is prone to rust, so that the chain is prone to jamming during the pulling process, which affects the lifting effect.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solutions: a hand chain hoist that prevents chain jamming, comprising a hoist body, an extension shield installed at one end of the hoist body, a rotating rod rotatably connected to the inside of the hoist body and the extension shield, a rotating wheel fixedly sleeved on the outside of the rotating rod corresponding to the inside of the hoist body and the extension shield respectively, a lifting chain sleeved on the outside of the rotating wheel inside the hoist body, a hand chain sleeved on the outside of the rotating wheel inside the extension shield, a lubricating smearing mechanism provided on the opposite ends of the hoist body and the extension shield, the lubricating smearing mechanism comprising an oil storage tank, a connecting pipe, a horizontal pipe, an oil outlet pipe, a fixing ring, an adsorption cotton pad, a telescopic sleeve, a pressure plate and a tensioning spring;

[0006] The opposite ends of the hoist body and the extended guard are both connected to the oil storage tank by bolts, the bottom ends of the two oil storage tanks are clamped with connecting pipes, the bottom ends of the two connecting pipes are clamped with cross pipes, the outer ends of the cross pipes are clamped with oil outlet pipes at positions corresponding to the inner sides of the lifting chain and the inner sides of the hand chain, one end of the oil outlet pipe is connected to a fixing ring by bolts, and the other end of the fixing ring is clamped with an adsorption cotton pad;

[0007] The top ends of the two oil storage tanks are symmetrically connected with telescopic rods, the bottom ends of the two telescopic rods on the same side are connected with pressure plates at positions corresponding to the interior of the oil storage tanks, and tension springs are connected between the pressure plates and the oil storage tanks at positions corresponding to the outer sides of the telescopic rods.

[0008] Preferably, the hoist body and the bottom end of the extended shield are both provided with a limit anti-deflection mechanism, and the limit anti-deflection mechanism includes a vertical plate, a horizontal frame, a slide bar, an outer limit block, a sleeve, a push rod, an inner limit block, a clamping roller and a support spring;

[0009] The bottom ends of the hoist body and the extended guard are symmetrically connected to the vertical plates by bolts, the bottom ends of the two opposite vertical plates are clamped with a horizontal frame, and the two ends of the horizontal frame are equidistantly and movably connected with sliding rods, and the two sliding rods on the same side are clamped with outer limit blocks at one end corresponding to the internal position of the horizontal frame, and a sleeve is symmetrically clamped at the center position inside the horizontal frame, and the two ends of the sleeves are symmetrically clamped with push rods, and one end of the two push rods on the same side is clamped with inner limit blocks, and the inside of the inner limit blocks and the outside limit blocks are rotatably connected with clamping rollers, and support springs are clamped between the outer limit block and the horizontal frame and between the inner limit block and the horizontal frame.

[0010] Preferably, the adsorption cotton pad is in contact with the outer side of the lifting chain and the outer side of the hand chain.

[0011] Preferably, both ends of the outer limit block and both ends of the inner limit block are slidably connected to the inner wall of the transverse frame.

[0012] Preferably, an internal threaded barrel is equidistantly connected to the inside of the gourd body, an insert rod is rotatably connected to the internal position of the internal threaded barrel at one end of the extended shield, slots are equidistantly opened at one end of the gourd body, and an insert plate is clamped at the internal position of the corresponding slot at one end of the extended shield.

[0013] Preferably, the outer side of the insert rod is connected to the inner wall of the internal threaded barrel through a thread, and one end of the insert plate is embedded in the slot.

[0014] Compared with the existing technology, the beneficial effects of the present invention are as follows: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0015] 1. A lubricating smearing mechanism is provided. Through the telescopic characteristics of the tensioning spring, the telescopic sleeve is extended, and the pressure plate slides down inside the oil storage tank, squeezing the lubricating oil inside the oil storage tank, forcing the lubricating oil to enter the inside of the cross pipe through the connecting pipe, and then into the inside of the oil outlet pipe. At the same time, the lubricating oil slowly seeps out through the adsorption cotton pad on the fixed ring, and is smeared on the inside of the lifting chain and hand chain passing by, ensuring the rotation effect of the lifting chain and hand chain and preventing the chain from getting stuck.

[0016] 2. A limited anti-deviation mechanism is set up. Through the telescopic characteristics of the supporting spring, the sliding rod, the outer limit block and the clamping roller are pushed to move and fit with the outer side of the lifting chain and the hand chain. At the same time, another tensioning spring is used to push the push rod, the inner limit block and the clamping roller to move and fit with the inner side of the lifting chain and the hand chain, so as to clamp and position the lifting chain and the hand chain. When rotating, the lifting chain and the hand chain are prevented from deflecting and the rotation effect is ensured.

[0017] 3. It is equipped with an internal threaded barrel, an insert rod, a slot and an insert plate. By rotating the insert rod to embed it into the internal threaded barrel, the extended guard can be conveniently fixed to the outside of the gourd body. At the same time, the insert plate is embedded in the slot, which further improves the stability of the extended guard at one end of the gourd body and prevents it from offsetting. The extended guard can be easily disassembled by flipping the insert rod, which is convenient for subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0019] In the attached figure:

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation structure of the rotating rod of the utility model;

[0022] Figure 3 This is a schematic diagram of the installation structure of the plug rod of the utility model;

[0023] Figure 4 It is a structural diagram of the lubricating smearing mechanism of the utility model;

[0024] Figure 5 This is a schematic structural diagram of the position limiting and anti-deviation mechanism of the utility model;

[0025] Numbers in the figure: 1. Hoist body; 2. Extended guard; 3. Rotating rod; 4. Rotating wheel; 5. Lifting chain; 6. Hand chain;

[0026] 7. Lubricating mechanism; 701. Oil storage tank; 702. Connecting pipe; 703. Horizontal pipe; 704. Oil outlet pipe; 705. Fixing ring; 706. Absorbent pad; 707. Telescopic rod; 708. Pressing plate; 709. Tensioning spring;

[0027] 8. Limiting and anti-deflection mechanism; 801. Vertical plate; 802. Horizontal frame; 803. Sliding rod; 804. External limit block; 805. Sleeve; 806. Push rod; 807. Internal limit block; 808. Clamping roller; 809. Support spring;

[0028] 9. Internally threaded barrel; 10. Insert rod; 11. Slot; 12. Insert plate. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0030] Example: Figure 1-5 As shown, the utility model provides a technical solution, a hand chain hoist that prevents chain jamming, comprising a hoist body 1, an extension shield 2 is installed at one end of the hoist body 1, a rotating rod 3 is rotatably connected inside the hoist body 1 and the extension shield 2, and a rotating wheel 4 is fixedly sleeved on the outer side of the rotating rod 3 corresponding to the inside of the hoist body 1 and the inside of the extension shield 2, a lifting chain 5 is sleeved on the outer side of the rotating wheel 4 inside the hoist body 1, and a hand chain 6 is sleeved on the outer side of the rotating wheel 4 inside the extension shield 2, and a lubricating smearing mechanism 7 is provided on the opposite end of the hoist body 1 and the extension shield 2, and the lubricating smearing mechanism 7 includes an oil storage tank 701, a connecting pipe 702, a horizontal pipe 703, an oil outlet pipe 704, a fixing ring 705, an adsorption cotton pad 706, a telescopic sleeve rod 707, a pressure plate 708 and a tensioning spring 709;

[0031] The opposite ends of the hoist body 1 and the extended shield 2 are connected to the oil storage tank 701 by bolts. The bottom ends of the two oil storage tanks 701 are clamped with connecting pipes 702. The bottom ends of the two connecting pipes 702 are clamped with cross pipes 703. The outer ends of the cross pipes 703 are clamped with oil outlet pipes 704 at positions corresponding to the inner sides of the lifting chain 5 and the inner sides of the hand chain 6. One end of the oil outlet pipe 704 is connected to a fixing ring 705 by bolts, and the other end of the fixing ring 705 is clamped with an adsorption cotton pad 706.

[0032] The top ends of the two oil storage tanks 701 are symmetrically connected with telescopic sleeve rods 707. The bottom ends of the two telescopic sleeve rods 707 on the same side are connected with pressure plates 708 at positions corresponding to the inside of the oil storage tank 701. Tension springs 709 are connected between the pressure plates 708 and the oil storage tank 701 at positions corresponding to the outsides of the telescopic sleeve rods 707. In order to facilitate the application of lubricating oil, one end of the absorbent cotton pad 706 is in contact with the outside of the lifting chain 5 and the outside of the hand chain 6.

[0033] The bottom ends of the hoist body 1 and the extended shield 2 are both provided with a limit anti-deflection mechanism 8, which includes a vertical plate 801, a horizontal frame 802, a slide bar 803, an outer limit block 804, a sleeve 805, a push rod 806, an inner limit block 807, a clamping roller 808 and a support spring 809;

[0034] The bottom ends of the hoist body 1 and the extended shield 2 are symmetrically connected to the vertical plates 801 by bolts. The bottom ends of the two opposite vertical plates 801 are clamped with the horizontal frame 802, and the two ends of the horizontal frame 802 are equidistantly connected to the sliding rods 803. The two sliding rods 803 on the same side are clamped with the outer limit blocks 804 at the corresponding internal positions of the horizontal frame 802. The center position of the horizontal frame 802 is symmetrically clamped with a sleeve 805. The two sleeves 805 are symmetrically clamped with push rods 806 at both ends. , and one end of the two push rods 806 located on the same side are clamped with an inner limit block 807, the inner limit block 807 and the outer limit block 804 are rotatably connected with a clamping roller 808, and support springs 809 are clamped between the outer limit block 804 and the transverse frame 802 and between the inner limit block 807 and the transverse frame 802. In order to facilitate the limiting of the lifting chain 5 and the hand chain 6, both ends of the outer limit block 804 and the inner limit block 807 are slidably connected to the inner wall of the transverse frame 802;

[0035] An internal threaded barrel 9 is equidistantly connected to the inside of the gourd body 1, and an insertion rod 10 is rotatably connected to the internal position of the internal threaded barrel 9 at one end of the extended shield 2. Slots 11 are equidistantly provided at one end of the gourd body 1, and an insertion plate 12 is attached to the internal position corresponding to the slot 11 at one end of the extended shield 2. In order to facilitate the disassembly and assembly of the extended shield 2, the outer side of the insertion rod 10 is connected to the inner wall of the internal threaded barrel 9 through threads, and one end of the insertion plate 12 is embedded in the slot 11.

[0036] The working principle and usage process of the utility model are as follows: first, the insertion rod 10 is rotated to be embedded in the internal threaded tube 9, which facilitates the fixing of the extended shield 2 to the outside of the hoist body 1, and at the same time, the inserting plate 12 is inserted into the slot 11, which further improves the stability of the extended shield 2 at one end of the hoist body 1 and prevents it from deflecting. The insertion rod 10 is flipped to facilitate the removal of the extended shield 2, which is convenient for subsequent maintenance;

[0037] Then, through the expansion and contraction characteristics of the tensioning spring 709, the telescopic sleeve 707 is pushed to extend, causing the pressure plate 708 to slide down inside the oil storage tank 701, squeezing the lubricating oil inside the oil storage tank 701, forcing the lubricating oil to enter the inside of the cross pipe 703 through the connecting pipe 702, and then to the inside of the oil outlet pipe 704. At the same time, the lubricating oil slowly seeps out through the adsorption cotton pad 706 on the fixing ring 705, and is smeared on the inner sides of the lifting chain 5 and the hand chain 6 passing by, thereby ensuring the rotation effect of the lifting chain 5 and the hand chain 6 and preventing the chain from getting stuck.

[0038] Finally, through the telescopic characteristics of the support spring 809, the sliding rod 803, the outer limit block 804 and the clamping roller 808 are pushed to move and fit with the outer sides of the lifting chain 5 and the hand chain 6. At the same time, another tensioning spring 709 pushes the push rod 806, the inner limit block 807 and the clamping roller 808 to move and fit with the inner sides of the lifting chain 5 and the hand chain 6, thereby clamping and positioning the lifting chain 5 and the hand chain 6. During rotation, the lifting chain 5 and the hand chain 6 are prevented from being offset, thereby ensuring the rotation effect.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A chain hoist for preventing chain jamming, comprising a hoist body (1), characterized in that: An extension shield (2) is installed at one end of the hoist body (1), and a rotating rod (3) is rotatably connected inside the hoist body (1) and the extension shield (2). A rotating wheel (4) is fixedly sleeved on the outer side of the rotating rod (3) corresponding to the inside of the hoist body (1) and the inside of the extension shield (2). A lifting chain (5) is sleeved on the outer side of the rotating wheel (4) inside the hoist body (1), and a hand chain (6) is sleeved on the outer side of the rotating wheel (4) inside the extension shield (2). A lubricating smearing mechanism (7) is provided at the opposite end of the hoist body (1) and the extension shield (2). The lubricating smearing mechanism (7) includes an oil storage tank (701), a connecting pipe (702), a transverse pipe (703), an oil outlet pipe (704), a fixing ring (705), an adsorption cotton pad (706), a telescopic sleeve (707), a pressure plate (708) and a tensioning spring (709); The opposite ends of the hoist body (1) and the extended shield (2) are both connected to an oil storage tank (701) by bolts, the bottom ends of the two oil storage tanks (701) are both clamped with a connecting pipe (702), the bottom ends of the two connecting pipes (702) are both clamped with a transverse pipe (703), and the outer ends of the transverse pipe (703) are clamped with an oil outlet pipe (704) at positions corresponding to the inner sides of the lifting chain (5) and the inner sides of the hand chain (6), one end of the oil outlet pipe (704) is connected to a fixing ring (705) by bolts, and the other end of the fixing ring (705) is clamped with an adsorption cotton pad (706); The top ends of the two oil storage tanks (701) are symmetrically connected to telescopic sleeve rods (707), the bottom ends of the two telescopic sleeve rods (707) on the same side are connected to pressure plates (708) at positions corresponding to the inside of the oil storage tank (701), and tension springs (709) are connected to positions corresponding to the outsides of the telescopic sleeve rods (707) between the pressure plates (708) and the oil storage tanks (701).

2. A chain hoist for preventing chain jamming according to claim 1, characterized in that: The bottom ends of the hoist body (1) and the extended shield (2) are both provided with a limit anti-deflection mechanism (8), and the limit anti-deflection mechanism (8) comprises a vertical plate (801), a horizontal frame (802), a slide bar (803), an outer limit block (804), a sleeve (805), a push rod (806), an inner limit block (807), a clamping roller (808) and a support spring (809); The bottom ends of the hoist body (1) and the extended shield (2) are symmetrically connected to the vertical plates (801) by bolts, the bottom ends of the two opposite vertical plates (801) are clamped with the horizontal frame (802), and the two ends of the horizontal frame (802) are equidistantly connected to the sliding rods (803), and the two sliding rods (803) on the same side are clamped with the outer limit blocks (804) at the corresponding internal positions of the horizontal frame (802), and the sleeves are symmetrically clamped at the center position of the interior of the horizontal frame (802). (805), push rods (806) are symmetrically connected at both ends of the two sleeves (805), and one end of the two push rods (806) located on the same side is connected to an inner limit block (807), the inner limit block (807) and the outer limit block (804) are both rotatably connected with a clamping roller (808), and support springs (809) are connected between the outer limit block (804) and the transverse frame (802) and between the inner limit block (807) and the transverse frame (802).

3. The chain hoist for preventing chain jamming according to claim 1, characterized in that: One end of the adsorption cotton pad (706) is in contact with the outer side of the lifting chain (5) and the outer side of the hand chain (6).

4. The chain hoist for preventing chain jamming according to claim 2, characterized in that: Both ends of the outer limit block (804) and the inner limit block (807) are slidably connected to the inner wall of the transverse frame (802).

5. The chain hoist for preventing chain jamming according to claim 1, characterized in that: An internal threaded barrel (9) is equidistantly connected to the inside of the gourd body (1); an inserting rod (10) is rotatably connected to the internal position of the internal threaded barrel (9) at one end of the extended shield (2); slots (11) are equidistantly provided at one end of the gourd body (1); and an inserting plate (12) is equidistantly connected to the internal position of the slot (11) at one end of the extended shield (2).

6. The chain hoist for preventing chain jamming according to claim 5, characterized in that: The outer side of the inserting rod (10) is connected to the inner wall of the internal threaded barrel (9) through a threaded connection, and one end of the inserting plate (12) is embedded in the interior of the slot (11).

Images