Manual and electric dual-purpose screw hoist

Abstract

The utility model discloses a manual and electric dual-purpose screw hoist, and relates to the field of screw hoists, the manual and electric dual-purpose screw hoist comprises a first shell and a second shell, the interiors of the first shell and the second shell are of hollow structures, a worm wheel is rotatably installed in the first shell, a worm is rotatably installed in the second shell, and a worm gear is rotatably installed in the worm. The worm gear is meshed with a worm, rotating shafts penetrating to the outside of the second shell are installed at the two ends of the worm, the rotating shafts are rotationally connected with the second shell, and an electric mechanism is installed at the end, away from the second shell, of one rotating shaft. Through the arrangement of the connector and the tool groove, the tool can be in butt joint with the handheld drill gun, high working efficiency is achieved, meanwhile, the protective cover and the telescopic assembly are designed, a good protective effect can be achieved under the condition that the tool groove is not used, and the protective cover and the telescopic assembly in the linkage state cannot affect rotation of the hand wheel.

Description

Technical Field

[0001] The utility model relates to the field of screw hoists, specifically a hand-electric dual-purpose screw hoist. Background Technique

[0002] A screw hoist is a machine that directly connects a threaded rod or connects to the gate leaf through a guiding slider and a connecting rod, and the screw moves up and down to open and close the gate.

[0003] In abnormal situations (such as power failure), the screw is driven by a handwheel to move up and down, but this method has low efficiency, and the external motor is obviously not applicable in the case of power failure.

[0004] In the prior art, there is a tool called a pistol drill, which is a portable rotary device. The drill gun itself has a rechargeable power source. If it can be realized that the pistol drill drives the handwheel to rotate in abnormal situations, the work efficiency can be further improved. Content of the Utility Model

[0005] The purpose of the utility model is: To achieve the above purpose, a hand-electric dual-purpose screw hoist is provided.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A hand-electric dual-purpose screw hoist, including a first housing and a second housing. The interiors of the first housing and the second housing are both hollow structures. A worm gear is rotatably installed inside the first housing, and a worm is rotatably installed inside the second housing. The worm gear meshes with the worm. Both ends of the worm are provided with rotating shafts penetrating to the outside of the second housing, and the rotating shafts are rotatably connected to the second housing. An electric mechanism is installed at one end of a rotating shaft away from the second housing, and a manual mechanism is installed at the other end of the rotating shaft away from the second housing.

[0007] As a further scheme of the utility model: The electric mechanism includes a large pulley fixedly installed at one end of a rotating shaft. The outer circumference of the large pulley is connected by a transmission belt to a small pulley. A driving motor is fixedly installed below the outer wall of the first housing through a mounting bracket, and the output shaft of the driving motor is fixedly connected to one end of the small pulley.

[0008] As a further scheme of the utility model: The manual mechanism includes a handwheel fixedly installed on the outer circumference of one end of the other rotating shaft. A connecting head protruding outward is integrally formed at the center of the handwheel, and a tool slot is opened at the center of the connecting head.

[0009] As a further solution of the utility model: The manual mechanism further includes a protective cover threadedly connected to the outer periphery of the connecting head. One end of the protective cover away from the connecting head is fixedly connected with a cylindrical sliding column. An expansion and contraction assembly fixedly connected to the annular portion of the handwheel is movably connected to the outer periphery of the sliding column.

[0010] As a further solution of the utility model: The expansion and contraction assembly includes a connecting ring movably connected to the outer periphery of the sliding column. A sliding sleeve is integrally formed on the outer periphery of the connecting ring. A spring is fixedly installed on the inner wall of the sliding sleeve. The other end of the spring is fixedly connected with a telescopic rod slidably connected to the inner cavity of the sliding sleeve. The other end of the telescopic rod is fixedly connected to the annular portion of the handwheel.

[0011] As a further solution of the utility model: A screw hole is provided at the center of the worm gear. A screw rod is threadedly connected to the inner wall of the screw hole. The screw rod is threadedly connected to the first housing.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By providing a connecting head and a tool slot, it can be docked with a handheld drill gun to achieve a relatively high working efficiency. At the same time, a protective cover and an expansion and contraction assembly are designed, which can achieve a good protection effect when the tool slot is not in use, and the protective cover and the expansion and contraction assembly in the linked state will not affect the rotation of the handwheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2 is a schematic structural diagram of another perspective of the utility model;

[0016] Figure 3 is the Figure 2 partial enlarged view of part A in the utility model;

[0017] Figure 4 is a schematic structural diagram of the expansion and contraction assembly of the utility model.

[0018] In the figure: 1. First housing; 2. Second housing; 3. Screw rod; 4. Large belt pulley; 5. Transmission belt; 6. Small belt pulley; 7. Driving motor; 8. Handwheel; 9. Expansion and contraction assembly; 901. Sliding sleeve; 902. Telescopic rod; 903. Connecting ring; 904. Spring; 10. Sliding column; 11. Protective cover; 12. Connecting head; 13. Tool slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1 to 4 , in the embodiment of the present utility model, the hand-electric dual-purpose screw hoist includes a first housing 1 and a second housing 2. The interiors of the first housing 1 and the second housing 2 are both hollow structures. A worm gear is rotatably installed inside the first housing 1, and a worm is rotatably installed inside the second housing 2. The worm gear meshes with the worm. Both ends of the worm are provided with rotating shafts penetrating to the outside of the second housing 2, and the rotating shafts are rotatably connected to the second housing 2. An electric mechanism is installed at one end of a rotating shaft away from the second housing 2, and a manual mechanism is installed at the other end of the rotating shaft away from the second housing 2. A screw hole is opened at the center of the worm gear, and a screw rod 3 is threadedly connected to the inner wall of the screw hole. The screw rod 3 is threadedly connected to the first housing 1.

[0021] In this embodiment: The worm is driven to rotate by the electric mechanism or the manual mechanism. When the worm rotates, it drives the worm gear to rotate. The rotating worm gear drives the screw rod 3 to move up and down under the action of its internal thread. Since the bottom end of the screw rod 3 is connected to a gate, and the gate generally cooperates with a gate track, the screw rod 3 can only move up and down and cannot rotate by itself.

[0022] Please refer specifically to Figure 1 and Figure 2 , the electric mechanism includes a large pulley 4 fixedly installed at one end of a rotating shaft. The outer circumference of the large pulley 4 is drivingly connected to a small pulley 6 through a transmission belt 5. A driving motor 7 is fixedly installed below the outer wall of the first housing 1 through a mounting bracket, and the output shaft of the driving motor 7 is fixedly connected to one end of the small pulley 6.

[0023] In this embodiment: Under normal power-on conditions, by starting the driving motor 7 (the driving motor 7 is a non-clutch type motor, that is, in the case of power failure, the output shaft of the motor can rotate under the action of the housing), the driving motor 7 operates to drive the small pulley 6 to rotate. The small pulley 6 drives the large pulley 4 to rotate through the transmission belt 5, and the large pulley 4 can drive the worm connected thereto to rotate, realizing the lifting and lowering of the screw rod 3.

[0024] Please refer specifically to Figure 2 , Figure 3 , Figure 4, the manual mechanism includes a handwheel 8 fixedly installed on the outer periphery of one end of another rotating shaft. A connecting head 12 protruding outward is integrally formed at the center of the handwheel 8. A tool slot 13 is provided at the center of the connecting head 12. The manual mechanism further includes a protective cover 11 threadedly connected to the outer periphery of the connecting head 12. A cylindrical sliding column 10 is fixedly connected to the end of the protective cover 11 away from the connecting head 12. An expansion and contraction assembly 9 fixedly connected to the annular part of the handwheel 8 is movably connected to the outer periphery of the sliding column 10.

[0025] In this embodiment: In abnormal situations (such as power failure), the worm can be driven to rotate by rotating the handwheel 8 to realize the lifting of the screw rod 3. However, this method is relatively slow. At this time, on the premise of having a drill gun, connect the tool to the drill gun, and then rotate the protective cover 11. The protective cover 11 rotates and opens. Since the protective cover 11 is threadedly connected to the connecting head 12, it moves outward during the rotation of the protective cover 11. The moving process is: unscrewing. The moving protective cover 11 drives the sliding column 10 to move until the protective cover 11 is completely misaligned with the connecting head 12. At this time, the expansion and contraction assembly 9 resets, and the reset expansion and contraction assembly 9 drives the protective cover 11 and the connecting head 12 to be misaligned in the up and down positions, avoiding the protective cover 11 from affecting the docking of the tool and the tool slot 13;

[0026] Then dock the tool connected to the drill gun with the tool slot 13 and start the handheld drill gun (it should be noted that there is a switch on the drill gun, and this switch can control the motor in the drill gun to rotate forward or reverse). The drill gun drives the connecting head 12 to rotate through the tool and the tool slot 13, and the connecting head 12 drives the handwheel 8 to rotate, and the handwheel 8 can drive the worm to rotate. This method can realize the lifting of the screw rod 3 relatively quickly in case of power failure.

[0027] Please refer specifically to Figure 4 , the expansion and contraction assembly 9 includes a connecting ring 903 movably connected to the outer periphery of the sliding column 10. A sliding sleeve 901 is integrally formed on the outer periphery of the connecting ring 903. A spring 904 is fixedly installed on the inner wall of the sliding sleeve 901. The other end of the spring 904 is fixedly connected to a telescopic rod 902 slidably connected to the inner cavity of the sliding sleeve 901. The other end of the telescopic rod 902 is fixedly connected to the annular part of the handwheel 8.

[0028] In this embodiment: When the sliding column 10 moves synchronously with the protective cover 11, the sliding column 10 and the connecting ring 903 slide and rotate relative to each other until the protective cover 11 completely disengages from the connecting head 12. At this time, the protective cover 11 is no longer restricted, and the spring 904 resets. The reset spring 904 pulls the sliding sleeve 901 and the connecting ring 903 to move, and the connecting ring 903 pulls the protective cover 11 and the connecting head 12 to be misaligned in the up and down positions through the sliding column 10, and then the drill gun can be docked with the tool slot 13;

[0029] After manual rotation or rotation by a drill gun is completed, pull the protective cover 11 to move. The protective cover 11 pulls the sliding sleeve 901 to reset through the sliding column 10. At this time, the spring 904 is stretched again until the protective cover 11 coincides with the connector 12. Then, the protective cover 11 and the connector 12 can be rotated again for threaded connection to complete the protection of the connector 12.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A hand-operated and electric dual-purpose screw gate opening and closing machine, comprising a first housing (1) and a second housing (2), wherein the first housing (1) and the second housing (2) are both hollow in structure, a worm wheel is rotatably mounted inside the first housing (1), and a worm is rotatably mounted inside the second housing (2), wherein the worm wheel meshes with the worm, and wherein: Both ends of the worm are equipped with a rotating shaft that passes through the outside of the second housing (2), and the rotating shaft is rotatably connected to the second housing (2). An electric mechanism is installed at one end of the rotating shaft away from the second housing (2), and a manual mechanism is installed at the other end of the rotating shaft away from the second housing (2).

2. The hand-operated and electric dual-purpose screw opening and closing machine according to claim 1 is characterized in that: The electric mechanism comprises a large belt pulley (4) fixedly mounted on one end of a rotating shaft, the outer periphery of the large belt pulley (4) being transmission-connected to a small belt pulley (6) via a transmission belt (5), a driving motor (7) being fixedly mounted below the outer wall of the first housing (1) via a mounting bracket, and an output shaft of the driving motor (7) being fixedly connected to one end of the small belt pulley (6).

3. The hand-operated and electric dual-purpose screw opening and closing machine according to claim 2 is characterized in that: The manual mechanism comprises a hand wheel (8) fixedly mounted on the outer periphery of one end of another rotating shaft, a connecting head (12) protruding outwards is integrally formed at the center of the hand wheel (8), and a tool groove (13) is provided at the center of the connecting head (12).

4. The hand-operated and electric dual-purpose screw opening and closing machine according to claim 3 is characterized in that: The manual mechanism further comprises a protective cover (11) threadedly connected to the outer periphery of the connecting head (12); an end of the protective cover (11) away from the connecting head (12) is fixedly connected to a cylindrical sliding column (10); the outer periphery of the sliding column (10) is movably connected to a telescopic component (9) fixedly connected to the annular portion of the hand wheel (8).

5. The hand-operated and electric dual-purpose screw opening and closing machine according to claim 4 is characterized in that: The telescopic assembly (9) comprises a connecting ring (903) movably connected to the outer periphery of the sliding column (10); the outer periphery of the connecting ring (903) is integrally formed with a sliding sleeve (901); a spring (904) is fixedly mounted on the inner wall of the sliding sleeve (901); the other end of the spring (904) is fixedly connected to a telescopic rod (902) slidably connected to the inner cavity of the sliding sleeve (901); the other end of the telescopic rod (902) is fixedly connected to the annular portion of the hand wheel (8).

6. The hand-operated and electric dual-purpose screw gate opening and closing machine according to claim 1, characterized in that: A screw hole is provided at the center of the worm wheel, a screw rod (3) is threadedly connected to the inner wall of the screw hole, and the screw rod (3) is threadedly connected to the first housing (1).

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