Dual brake winch device

Abstract

The invention relates to the technical field of winches, in particular to a double-brake winch device which comprises a fixedly-arranged mounting base, a connecting rack is fixedly welded to the top of the mounting base, a fixed top seat is mounted at the top of the connecting rack, and two bearing seats are arranged in the upper space between the connecting rack and the fixed top seat. The bottoms of the two bearing seats are both fixed to the connecting rack, a winding drum unit is arranged between the two bearing seats, a first braking unit and a second braking unit are arranged on the left side and the right side of the winding drum unit respectively, and a two-stage speed reduction transmission mechanism is arranged on the right side of the second braking unit. According to the winch, a double-side braking mode is adopted, rapid and effective braking of the center transmission shaft can be better achieved, the occurrence probability of the car sliding phenomenon caused by inertia of the winding drum body during single-side braking is effectively reduced, and the braking efficiency and effect are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of winches, in particular to a double-brake winch device. Background Art

[0002] A winch is a light and small lifting device that winds a steel wire rope or a chain around a drum to lift or tow heavy objects. It is also called a hoist and is widely used in fields such as mine hoisting, roadway transportation, material lifting, tower crane assistance, and cable traction.

[0003] After retrieval, a patent document with the patent application number CN202020124625.X discloses an integral wall-mounted electric winch. Its main structure includes a frame and a drum, a speed reducer, a high-speed shaft brake, a coupling, and a motor arranged on the frame; the frame includes a combined base, and the motor is installed on the combined base; one end of the coupling is connected to the output shaft of the motor, and the other end is connected to the input shaft of the speed reducer; the high-speed shaft brake is installed on the combined base and other main structures.

[0004] It can be seen that the above winch structure only installs a single high-speed shaft brake on the shaft during operation. This structure limits the braking accuracy. Due to the inevitable gaps between the transmission mechanisms, from the motor end of the high-speed shaft to the drum output end, even after the brake on the high-speed shaft brakes, the drum will still rotate slightly under the drive of external forces, making it difficult to achieve precise positioning. As a result, the heavy object may still have a certain displacement after braking and cannot accurately stop at the predetermined position.

[0005] In addition, when the braking torque is transmitted to the drum through the transmission mechanism, it will change according to the transmission ratio.

[0006] Only setting a brake on the high-speed shaft, when lifting or lowering heavy objects, especially in the case of large loads, after the conversion of the transmission ratio, the actual braking torque obtained at the drum may be relatively small, making it difficult to effectively control the movement of the heavy object, and there are dangerous situations such as "runaway".

[0007] Based on this, the present invention optimizes the design for the problems existing in the prior art in the case of winch braking, and specifically proposes a double-brake winch device to better solve the problems existing in the prior art. Summary of the Invention

[0008] To solve one of the above technical problems, the technical solution adopted by the present invention is: a double-brake winch device, including a fixedly arranged mounting base, a connecting frame is fixedly welded on the top of the mounting base, a fixed top seat is installed on the top of the connecting frame, two bearing seats are arranged in the upper space between the connecting frame and the fixed top seat, the bottoms of the two bearing seats are both fixed on the connecting frame, a drum unit is arranged between the two bearing seats, a first braking unit and a second braking unit are respectively arranged on the left and right sides of the drum unit, a two-stage reduction drive mechanism is arranged on the right side of the second braking unit, and the power input end at the bottom of the two-stage reduction drive mechanism is connected to a driving member.

[0009] In any of the above solutions, preferably, the drum unit includes a horizontally arranged drum body, the left and right ends of the central transmission shaft of the drum body are respectively connected to the first braking unit and the second braking unit at the corresponding positions, the left and right ends of the central transmission shaft respectively pass through the shaft holes at the centers of the bearing seats on their corresponding sides movably, lateral retaining rings are respectively arranged at both ends of the drum body, and a steel wire rope is wound on the outer side wall of the drum body.

[0010] In any of the above solutions, preferably, the first braking unit includes a brake disc coaxially installed on the outer side wall of the central transmission shaft, a first brake is cooperatively installed on the upper part of the brake disc, both sides of the first brake are respectively installed inside the corresponding U-shaped frames, the tops of the U-shaped frames are fixed to the bottom of the fixed top seat, a first linkage braking mechanism is installed at intervals on the left side of the U-shaped frame, and a response trigger for triggering the start and stop of the first brake is installed in the installation cavity of the U-shaped frame above the first brake, and the top of the response trigger is fixed to the top of the installation cavity of the U-shaped frame.

[0011] In any of the above solutions, preferably, the first brake adopts a disc brake, the start-stop switch of the disc brake is arranged at its top and is relatively spaced from the response trigger, and is used to push the start-stop switch to act when the response trigger works.

[0012] In any of the above solutions, preferably, the first linkage braking mechanism is respectively used to cooperate and link with the first brake and the second braking unit.

[0013] In any of the above solutions, preferably, the first linkage braking mechanism includes a first pneumatic brake, the rotating part of the first pneumatic brake is fixed on the outer side wall of the central transmission shaft, and the fixed part of the first pneumatic brake is fixedly connected to the connecting frame and the fixed top seat through a left vertical plate.

[0014] Preferably, in any of the above solutions, the second braking unit includes a second pneumatic brake. The rotating part of the second pneumatic brake is fixed on the outer side wall of the central transmission shaft, and the fixed part of the second pneumatic brake is fixedly connected to the connecting frame and the fixed top seat through the right vertical plate.

[0015] Preferably, in any of the above solutions, the air inlet ports of the first pneumatic brake and the second pneumatic brake are both connected to an external air pump through rigid pipelines. A bypass branch pipe is provided on the rigid pipeline on the left side, and the output end of the bypass branch pipe is connected to the pneumatic input end of the response trigger.

[0016] Preferably, in any of the above solutions, the response trigger includes a trigger cylinder fixedly installed in the installation cavity of the U-shaped frame. The air hole of the trigger cylinder is connected to the output end of the bypass branch pipe. A push plate is fixedly installed at the bottom of the piston rod of the trigger cylinder. The bottom of the push plate faces the start-stop switch of the first brake. A return spring is sleeved on the outer side wall of the piston rod between the push plate and the cylinder barrel of the trigger cylinder. The upper and lower ends of the return spring are respectively fixed at the bottom of the cylinder barrel of the trigger cylinder and the top of the push plate.

[0017] Preferably, in any of the above solutions, the driving member is a driving motor.

[0018] Preferably, in any of the above solutions, the two-stage reduction transmission mechanism includes a first driving sprocket fixedly installed at the output end of the driving motor. A transition shaft is provided on the connecting frame above the first driving sprocket. The two ends of the transition shaft respectively pass through the auxiliary bearing supports at their corresponding positions movably. A first transmission sprocket is coaxially and fixedly installed on the outer side wall of the transition shaft. The first transmission sprocket and the first driving sprocket are connected in cooperation through a first chain. A second driving sprocket is fixedly installed on the outer side wall of the transition shaft on the left side of the first transmission sprocket. A second transmission sprocket is fixedly installed on the outer side wall of the central transmission shaft above the second driving sprocket. A second chain is provided between the second driving sprocket and the second driving sprocket. The first driving sprocket, the first transmission sprocket, the first chain, the second driving sprocket, the second transmission sprocket, and the second chain cooperate to drive to achieve a reduction movement.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The winch in the present invention adopts a bilateral braking method, which can better achieve rapid and effective braking of the central transmission shaft, effectively reduce the occurrence probability of the phenomenon that the drum body slides due to inertia during unilateral braking, and improve the efficiency and effect of braking.

[0020] 2. When decelerating in the present invention, the first driving sprocket, the first transmission sprocket, the first chain, the second driving sprocket, the second transmission sprocket, and the second chain cooperate to achieve two-stage deceleration motion, effectively ensuring a smooth reduction in the transmission speed and the stability of the transmission, and being suitable for use in high-speed and high-torque lifting conditions.

[0021] 3. When braking, the winch in the present invention can achieve multi-stage cooperative braking relying on the first braking unit and the second braking unit, effectively completing fast and safe braking according to the actual operating conditions, preventing unstable braking from occurring, and effectively reducing the vibration problems caused by the inertia of heavy objects and the inertia of the drum body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn to actual scale.

[0023] Figure 1 It is a schematic structural diagram of the double-braking winch device of the present invention.

[0024] Figure 2 It is a partial three-dimensional structural diagram of the present invention.

[0025] Figure 3 It is a partial planar structural diagram of the present invention.

[0026] In the figure, 1. Installation base; 2. Connecting frame; 3. Fixed top seat; 4. Bearing seat; 5. Drum body; 6. Central transmission shaft; 7. Lateral retaining ring; 8. Steel wire rope; 9. Brake disc; 10. First brake; 11. U-shaped frame; 12. Start-stop switch; 13. First pneumatic brake; 14. Second pneumatic brake; 15. Rigid pipeline; 16. Bypass branch pipe; 17. Driving motor; 18. First driving sprocket; 19. Transition shaft; 20. Auxiliary bearing support; 21. First transmission sprocket; 22. First chain; 23. Second driving sprocket; 24. Second transmission sprocket; 25. Second chain; 26. Trigger cylinder; 27. Pushing disc; 28. Return spring; 29. Left vertical plate; 30. Right vertical plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will describe in detail the embodiments of the technical solutions of the present invention with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, so they are only examples and cannot be used to limit the protection scope of the present invention. The specific structure of the present invention is as Figures 1 - 3 shown.

[0028] Embodiment 1: A double-brake winch device includes a fixedly arranged mounting base 1. A connecting frame 2 is fixedly welded to the top of the mounting base 1. A fixed top seat 3 is installed on the top of the connecting frame 2. Two bearing seats 4 are arranged in the upper space between the connecting frame 2 and the fixed top seat 3. The bottoms of the two bearing seats 4 are both fixed on the connecting frame 2. A drum unit is arranged between the two bearing seats 4. A first braking unit and a second braking unit are respectively arranged on the left and right sides of the drum unit. A two-stage reduction transmission mechanism is arranged on the right side of the second braking unit. The power input end at the bottom of the two-stage reduction transmission mechanism is connected to a driving member.

[0029] When the double-brake winch device in the present invention works, it relies on the driving member to drive the two-stage reduction transmission mechanism to operate. The power of the driving member is decelerated through the reduction of the two-stage reduction transmission mechanism. When the power is transmitted to the drum unit, the lifting or conveying of the heavy object connected to the drum unit is realized.

[0030] When braking is required, controlling the first braking unit and the second braking unit to start in sequence can achieve rapid braking. During the braking process, according to the current running speed of the heavy object and the braking requirements, the external air pump can be quickly controlled to achieve staged braking of the first braking unit and the second braking unit, improving the safety of braking.

[0031] In any of the above solutions, preferably, the drum unit includes a horizontally arranged drum body 5. The left and right ends of the central transmission shaft 6 of the drum body 5 are respectively connected to the first braking unit and the second braking unit at the corresponding positions. The left and right ends of the central transmission shaft 6 respectively pass through the shaft holes at the centers of the bearing seats 4 on their corresponding sides movably. Lateral retaining rings 7 are respectively arranged at both ends of the drum body 5. A steel wire rope 8 is wound on the outer side wall of the drum body 5.

[0032] The drum unit in the present invention is connected to the corresponding bearing seats 4 on both sides by relying on the central transmission shaft 6. When braking is required, the second braking unit is first started to achieve braking at the high-speed end. During the braking process, the state of the vibration sensor installed on the drum unit is detected at all times. When the vibration state is too large, the first braking unit is continued to be started to achieve immediate supplementary braking, so as to achieve the purpose of staged braking and rapid braking.

[0033] Preferably, in any of the above solutions, the first braking unit includes a brake disc 9 coaxially mounted on the outer sidewall of the central transmission shaft 6. A first brake 10 is cooperatively mounted on the upper part of the brake disc 9. Both sides of the first brake 10 are respectively mounted inside corresponding U-shaped frames 11. The top of the U-shaped frame 11 is fixed to the bottom of the fixed top seat 3. A first linkage braking mechanism is spacedly mounted on the left side of the U-shaped frame 11. A response trigger for triggering the start and stop of the first brake 10 is mounted in the installation cavity of the U-shaped frame 11 above the first brake 10. The top of the response trigger is fixed to the top of the installation cavity of the U-shaped frame 11.

[0034] When braking, the first braking unit in the present invention relies on the start of the first brake 10 to clamp and position the brake disc 9, thereby ensuring the braking of the central transmission shaft 6.

[0035] In addition, when the second braking unit alone cannot achieve braking, the first linkage braking mechanism is controlled to start and brake the central transmission shaft 6. When the air pressure is continuously increased during braking and effective braking still cannot be achieved, as the air pressure increases, the response trigger will be triggered, so that the first brake 10 can be triggered by the response trigger, and then the braking force is increased again to enhance the braking effect.

[0036] Preferably, in any of the above solutions, the first brake 10 is a disc brake. The start-stop switch 12 of the disc brake is arranged on its top and is spaced relative to the response trigger. When the response trigger works, it is used to push the start-stop switch 12 to act.

[0037] When the response trigger works, it can push downwards. During the pushing process, the disc brake can be triggered to continue braking by relying on the disc brake.

[0038] Preferably, in any of the above solutions, the first linkage braking mechanism is respectively used to cooperate and link with the first brake 10 and the second braking unit.

[0039] Preferably, in any of the above solutions, the first linkage braking mechanism includes a first pneumatic brake 13. The rotating part of the first pneumatic brake 13 is fixed on the outer sidewall of the central transmission shaft 6. The fixed part of the first pneumatic brake 13 is fixedly connected to the connecting frame 2 and the fixed top seat 3 through a left vertical plate 29.

[0040] When the first linkage braking mechanism works, it relies on the start and stop of the first pneumatic brake 13 to brake the central transmission shaft 6.

[0041] Preferably, in any of the above solutions, the second braking unit includes a second pneumatic brake 14. The rotating part of the second pneumatic brake 14 is fixed on the outer wall of the central transmission shaft 6, and the fixed part of the second pneumatic brake 14 is fixedly connected to the connecting frame 2 and the fixed top seat 3 through the right vertical plate 30.

[0042] When the second braking unit works, the braking of the central transmission shaft 6 is realized by starting and stopping the second pneumatic brake 14.

[0043] Preferably, in any of the above solutions, the air inlet ports of the first pneumatic brake 13 and the second pneumatic brake 14 are both connected to an external air pump through a rigid pipeline 15. A bypass branch pipe 16 is provided on the rigid pipeline 15 on the left side, and the output end of the bypass branch pipe 16 is connected to the pneumatic input end of the response trigger.

[0044] When controlling the braking actions of the first pneumatic brake 13 and the second pneumatic brake 14, the air power required for braking is provided by an external air pump or a hydraulic station. Controlling the magnitude of the air power can achieve the control of the braking effect.

[0045] Preferably, in any of the above solutions, the driving member is a driving motor 17. The driving motor 17 is a high-torque motor to provide sufficient rotational power.

[0046] Preferably, in any of the above solutions, the two-stage reduction transmission mechanism includes a first driving sprocket 18 fixedly installed at the output end of the driving motor 17. A transition shaft 19 is provided on the connecting frame 2 above the first driving sprocket 18. The two ends of the transition shaft 19 respectively pass through the auxiliary bearing supports 20 at their corresponding positions movably. A first transmission sprocket 21 is coaxially and fixedly installed on the outer wall of the transition shaft 19. The first transmission sprocket 21 and the first driving sprocket 18 are connected in cooperation through a first chain 22. A second driving sprocket 23 is fixedly installed on the outer wall of the transition shaft 19 on the left side of the first transmission sprocket 21. A second transmission sprocket 24 is fixedly installed on the outer wall of the central transmission shaft 6 above the second driving sprocket 23. A second chain 25 is provided between the second driving sprocket 23 and the second driving sprocket 23. The first driving sprocket 18, the first transmission sprocket 21, the first chain 22, the second driving sprocket 23, the second transmission sprocket 24, and the second chain 25 cooperate to drive and realize the reduction movement.

[0047] When the two-stage reduction drive mechanism transmits power, it relies on the drive motor 17 to output power. When the power passes through the transmission of the first driving sprocket 18, the first transmission sprocket 21, the first chain 22, the second driving sprocket 23, the second transmission sprocket 24, and the second chain 25, multi-stage speed reduction is achieved.

[0048] Embodiment 2: Compared with Embodiment 1, the difference lies in that it further includes the following technical features: In any of the above solutions, preferably, the response trigger includes a trigger cylinder 26 fixedly installed in the installation cavity of the U-shaped frame 11. The air hole of the trigger cylinder 26 is connected to the output end of the bypass branch pipe 16. A push plate 27 is fixedly installed at the bottom of the piston rod of the trigger cylinder 26. The bottom of the push plate 27 faces the start-stop switch 12 of the first brake 10. A return spring 28 is sleeved on the outer side wall of the piston rod between the push plate 27 and the cylinder barrel of the trigger cylinder 26. The upper and lower ends of the return spring 28 are respectively fixed at the bottom of the cylinder barrel of the trigger cylinder 26 and the top of the push plate 27.

[0049] The function of the response trigger is to rely on an external air pump to convey braking air pressure to the corresponding first linkage braking mechanism and the second braking unit, and at the same time convey the air pressure to the bypass branch pipe 16. Rely on the air power of the bypass branch pipe 16 to push the piston rod inside the trigger cylinder 26, so as to achieve the purpose of continuously moving the push plate 27 at the lower end of the piston rod downward. The pre-installed return spring 28 with a set elastic force can quickly control the air pressure required for the displacement of the push plate 27, so as to realize the triggering requirement of the push plate 27 for the start-stop switch 12 under different pneumatic braking states, and realize the quick triggering start of the first brake 10.

[0050] Specific working principle: When this double-brake winch device works, it relies on the driving part to drive the two-stage reduction drive mechanism to operate, and reduces the speed of the power of the driving part through the reduction of the two-stage reduction drive mechanism. When the power is transmitted to the drum unit, the lifting or conveying of the heavy object connected to the drum unit is realized. When braking is required, controlling the first braking unit and the second braking unit to start in sequence can achieve quick braking. During the braking process, according to the current running speed of the heavy object and the braking requirements, the external air pump can be quickly controlled to achieve hierarchical braking of the first braking unit and the second braking unit, improving the safety of braking.

[0051] As can be seen from the above, the use of bilateral braking in this winch can better achieve rapid and effective braking of the central transmission shaft 6, effectively reducing the probability of the phenomenon of the drum body 5 slipping due to inertia during unilateral braking, and improving the efficiency and effect of braking; during deceleration transmission, the first driving sprocket 18, the first transmission sprocket 21, the first chain 22, the second driving sprocket 23, the second transmission sprocket 24, and the second chain 25 cooperate to drive to achieve two-stage deceleration movement, effectively ensuring a smooth reduction in the transmission speed and the stability of the transmission, and being suitable for use under high-speed and high-torque lifting conditions; when the winch is braking, it can achieve multi-stage cooperative braking by relying on the first braking unit and the second braking unit, effectively completing rapid and safe braking according to the actual operating conditions, preventing the occurrence of unstable braking, and effectively reducing the vibration problems caused by the inertia of the heavy object and the inertia of the drum body 5.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention; for those skilled in the art of this technology, any alternative improvement or transformation made to the embodiments of the present invention falls within the protection scope of the present invention.

[0053] Those not detailed in the present invention are all well-known technologies to those skilled in the art of this technology.

Claims

1. A double-brake winch device, comprising a fixed mounting base, a connecting frame fixedly welded on the top of the mounting base, and a fixed top seat installed on the top of the connecting frame, characterized in that: Two bearing seats are arranged in the upper space between the connecting frame and the fixed top seat, and the bottoms of the two bearing seats are fixed on the connecting frame. A reel unit is arranged between the two bearing seats, and a first brake unit and a second brake unit are respectively arranged on the left and right sides of the reel unit. A two-stage reduction transmission mechanism is arranged on the right side of the second brake unit, and a power input end at the bottom of the two-stage reduction transmission mechanism is connected to the driving member.

2. The double brake winch device according to claim 1, characterized in that: The drum unit includes a horizontally arranged drum body, and the left and right ends of the central transmission shaft of the drum body are respectively connected to the first brake unit and the second brake unit at corresponding positions, and the left and right ends of the central transmission shaft are respectively movable through the axial holes in the center of the bearing seat on the corresponding sides, and lateral retaining rings are respectively arranged at the two end parts of the drum body, and a steel wire rope is wound on the outer side wall of the drum body.

3. The double brake winch device according to claim 2, characterized in that: The first brake unit includes a brake disc coaxially mounted on the outer side wall of the central transmission shaft, a first brake is cooperatively mounted on the upper part of the brake disc, two sides of the first brake are respectively mounted inside the corresponding U-shaped frame, the top of the U-shaped frame is fixed to the bottom of the fixed top seat, a first linkage brake mechanism is installed at intervals on the left side of the U-shaped frame, a response trigger for triggering the start and stop of the first brake is installed in the mounting cavity of the U-shaped frame above the first brake, and the top of the response trigger is fixed to the top of the mounting cavity of the U-shaped frame.

4. The double brake winch device according to claim 3, characterized in that: The first brake is a disc brake, the start-stop switch of the disc brake is arranged on the top thereof and is arranged relative to the response trigger at an interval, and is used to push the start-stop switch to operate when the response trigger works.

5. The double brake winch device according to claim 4, characterized in that: The first linkage brake mechanism is used to cooperate and link with the first brake and the second brake unit respectively.

6. The double brake winch device according to claim 5, characterized in that: The first linkage brake mechanism comprises a first pneumatic brake, the rotating part of the first pneumatic brake is fixed on the outer side wall of the central transmission shaft, and the fixed part of the first pneumatic brake is fixedly connected to the connecting frame and the fixed top seat through a left vertical plate.

7. The double brake winch device according to claim 6, characterized in that: The second brake unit includes a second pneumatic brake, a rotating portion of the second pneumatic brake is fixed to the outer side wall of the central transmission shaft, and a fixed portion of the second pneumatic brake is fixedly connected to the connecting frame and the fixed top seat through a right side vertical plate.

8. The double brake winch device according to claim 7, characterized in that: The air inlet ports of the first pneumatic brake and the second pneumatic brake are connected to an external air pump through a rigid pipeline. A bypass branch is provided on the rigid pipeline on the left side, and the output end of the bypass branch is connected to the pneumatic input end of the response trigger.

9. The double-brake winch device according to claim 8, characterized in that: The driving component is a driving motor.

10. The double brake winch device according to claim 9, characterized in that: The double-stage reduction transmission mechanism includes a first driving sprocket fixedly mounted on the output end of the driving motor, a transition shaft is arranged on the connecting frame above the first driving sprocket, two ends of the transition shaft respectively movably pass through the auxiliary bearing supports at their corresponding positions, a first transmission sprocket is coaxially fixedly mounted on the outer wall of the transition shaft, the first transmission sprocket and the first driving sprocket are connected by a first chain, a second driving sprocket is fixedly mounted on the outer wall of the transition shaft on the left side of the first transmission sprocket, a second transmission sprocket is fixedly mounted on the outer wall of the central transmission shaft above the second driving sprocket, a second chain is arranged between the second driving sprocket and the second driving sprocket, and the first driving sprocket, the first transmission sprocket, the first chain, the second driving sprocket, the second transmission sprocket, and the second chain cooperate to transmit and realize the reduction motion.

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