A brake operating device and a winch drum brake device

Abstract

This utility model discloses a brake operating device and a winch drum brake device, relating to the field of winch drum brake technology. It includes a pneumatic combined pressure regulating valve and at least one self-locking cylinder. The pneumatic combined pressure regulating valve has a pressure regulating valve handle, a first working output port communicating with the rod chamber of each locking cylinder, and a second working output port communicating with the rodless chamber of each locking cylinder. The control gas pressure increases as the pressure regulating valve handle is pushed up or pulled down at an increased angle. The self-locking cylinder is fixedly mounted on one side of the brake shaft, and a connecting bracket is rotatably mounted on the piston rod end of the self-locking cylinder. The connecting bracket is fixed to the brake shaft. When the control gas is disconnected, each locking cylinder is in a self-locking state; and in the self-locking state, the current extension length of the piston rod of each locking cylinder remains unchanged. The structure is simple, occupies little space, requires no prolonged holding, and is easy and convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of winch drum brake technology, and in particular to a brake operating device and a winch drum brake device. Background Technology

[0002] As a crucial component of the hoisting system in oil well workover rigs, the precise and safe control of the main drum's rotation by its braking system is extremely important. Currently, traditional workover rig braking systems are broadly classified into band brake systems and disc brake systems. Most existing band brake systems are manual, favored by users due to their simple structure, relatively low operating costs, and ease of maintenance.

[0003] The drawbacks of traditional well workover rig winch drum brakes include high operating intensity, inconvenient operation due to excessively long operating handles, space-consuming mechanical structures, and the need for prolonged holding during operation. Utility Model Content

[0004] The purpose of this utility model is to provide a brake operating device and a winch drum brake device to solve the problems existing in the prior art. It has a simple structure, occupies little space, does not require long-term holding, and is simple and convenient to operate.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a brake operating device, including a pneumatic combined pressure regulating valve and at least one self-locking cylinder; the pneumatic combined pressure regulating valve has a pressure regulating valve handle, a first working output port, and a second working output port; the first working output port and the second working output port are used to output control gas, the first working output port is connected to the rod chamber of each of the self-locking cylinders, and the second working output port is connected to the rodless chamber of each of the self-locking cylinders; the control gas pressure of the first working output port can increase as the upward angle of the pressure regulating valve handle increases, and the second working output port... The control gas pressure increases as the pressure regulating valve handle is pushed down at an angle; the self-locking cylinder is fixedly mounted on one side of the brake shaft, and the piston rod end of the self-locking cylinder is rotatably connected to a connecting bracket around a first axis, the first axis being parallel to the rotation axis of the brake shaft; the connecting bracket is fixedly mounted on the brake shaft; when the control gas output from the first working output port and the second working output port of the pneumatic combination pressure regulating valve is disconnected, each of the self-locking cylinders is in a self-locking state; and in the self-locking state, the current extension length of the piston rod of each of the self-locking cylinders remains unchanged.

[0007] Preferably, there are two self-locking cylinders; the two self-locking cylinders are respectively fixedly mounted on both sides of the brake shaft; the connecting brackets connected to each self-locking cylinder are fixedly mounted on the brake shaft; the two self-locking cylinders extend and retract synchronously.

[0008] Preferably, it also includes an emergency stop valve and a normally closed shut-off valve; the input port of the emergency stop valve and the input port of the normally closed shut-off valve are both used to connect to the air supply equipment, the output port of the emergency stop valve is connected to the control port of the normally closed shut-off valve, and the output port of the normally closed shut-off valve is connected to the input port of the pneumatic combination valve.

[0009] Preferably, it also includes a manifold for receiving on-board compressed air; the inlet of the emergency stop valve and the inlet of the normally closed shut-off valve are both connected to the manifold.

[0010] Preferably, both the emergency stop valve and the normally closed shut-off valve are two-position three-way valves.

[0011] This utility model also provides a winch drum braking device, including a brake band, a brake shaft, and a braking operation device as described in any of the above claims; the brake band is used to be sleeved on the winch drum; the fixed end of the brake band remains fixed, the movable end of the brake band is connected to the brake shaft, and the brake shaft is used to drive the movable end of the brake band to move towards or away from the winch drum; the piston rods of each self-locking cylinder of the braking operation device are connected to the brake shaft through the corresponding connecting bracket.

[0012] Preferably, the fixed end of the brake band is rotatably connected to an upper screw, the lower end of the upper screw is threadedly connected to an adjusting cap, the lower end of the adjusting cap is threadedly connected to a lower screw, and the lower end of the lower screw is rotatably connected to a bottom bracket, which is used to fix the brake band to the ground.

[0013] Preferably, a tension spring is also fixed on the outer wall of the brake band, one end of which is used to maintain a fixed relative position with the ground, and the tension spring is close to the movable end of the brake band.

[0014] Preferably, the movable end of the brake band is rotatably connected to a crank, and the end of the crank away from the brake band is rotatably connected to the brake shaft.

[0015] Preferably, a gap adjustment mechanism is also provided on the outer side of the brake band, which is used to adjust the gap between the inner wall of the brake band and the winch drum.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] The brake operating device provided by this utility model, through the setting of a pneumatic combined pressure regulating valve, allows the control gas pressure provided by its first and second working output ports to change with the rotation angle of the pressure regulating valve handle, and the pressure regulating valve handle can automatically return to the neutral position; the pressure regulating valve handle is also the brake handle; when the pressure regulating valve handle is pushed up, it can control the control gas pressure of the first working output port, thereby increasing the gas pressure in the rod chamber of the self-locking cylinder, thus allowing the piston rod of the self-locking cylinder to retract; when the pressure regulating valve handle is pushed down, the piston rod of the self-locking cylinder can be extended in the same way; the larger the downward pushing angle, the greater the control gas pressure, the smaller the gap between the brake band and the winch drum, and the greater the braking force on the winch drum; similarly, the larger the upward pushing angle, the larger the gap between the brake band and the winch drum. The smaller the braking force on the winch drum, the better. When the output control gas pressure is zero, the self-locking cylinder can lock the current position, keeping the gap between the brake band and the winch drum constant. The entire operation only requires one operator to hold the pressure regulating valve handle with their left hand to brake and release the winch drum. The entire process is pneumatically controlled. For electrical control, it can achieve water ingress protection. Since most of the circuit or pneumatic system operation parts are currently concentrated on the operating platform at the rear of the workover rig, they are easily splashed by various mixed liquids during operation, causing water ingress into electrical components, resulting in corrosion, short circuits, or other hazards. Pneumatic control, with no electrical or hydraulic control components, can reduce the malfunctions or other hazards caused by water ingress.

[0018] This utility model also provides a winch drum braking device, which uses pneumatically controlled components to achieve braking and releasing operations on the winch drum. The overall operation is simple and convenient, labor-saving, and does not require holding for a long time, making it easy to operate. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the brake operating device provided by the present invention.

[0021] Figure 2 This is a schematic diagram of the winch drum brake device provided by the present invention.

[0022] In the picture:

[0023] 10-Pneumatic combination pressure regulating valve; 11-Emergency stop valve; 12-Normally closed shut-off valve; 13-Self-locking cylinder; 14-Manifold;

[0024] 20-Windmill drum;

[0025] 30-Brake band; 301-Fixed end; 302-Moving end; 31-Upper screw; 32-Adjusting cap; 33-Lower screw; 34-Tension spring; 35-Crank; 36-Brake shaft; 37-Connecting bracket; 38-Extension rod;

[0026] 40 - Vehicle-mounted compressed air. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The purpose of this utility model is to provide a brake operating device and a winch drum brake device to solve the problems existing in the prior art. It has a simple structure, occupies little space, does not require long-term holding, and is simple and convenient to operate.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] This embodiment provides a brake operation device, such as... Figure 1 and Figure 2As shown, the device includes a pneumatic combination pressure regulating valve 10 and at least one self-locking cylinder 13. The pneumatic combination pressure regulating valve 10 has a pressure regulating valve handle, a first working output port, and a second working output port. The first and second working output ports are used to output control gas. The first working output port is connected to the rod chamber of its respective locking cylinder 13, and the second working output port is connected to the rodless chamber of its respective locking cylinder 13. The control gas pressure of the first working output port increases with the upward angle of the pressure regulating valve handle, and the control gas pressure of the second working output port increases with the downward angle of the pressure regulating valve handle. The self-locking cylinder 13... The piston rod end of the self-locking cylinder 13 is rotatably connected to a connecting bracket 37 around a first axis, which is parallel to the rotation axis of the brake shaft 36. The connecting bracket 37 is used to fix the cylinder to the brake shaft 36. When the control gas output from the first and second working output ports of the pneumatic combination pressure regulating valve 10 is disconnected (this can be achieved by the pressure regulating valve handle being in the neutral position or by the emergency stop valve 11 and the normally closed shut-off valve 12), the respective locking cylinders 13 are in a self-locking state. In the self-locking state, the current extension length of the piston rod of the respective locking cylinder 13 remains unchanged.

[0032] By setting a pneumatic combination pressure regulating valve 10, the control gas pressure provided by its first and second working output ports can change with the rotation angle of the pressure regulating valve handle, and the pressure regulating valve handle can automatically return to the neutral position; the pressure regulating valve handle is also a brake handle; when the pressure regulating valve handle is pushed up, it can control the control gas pressure of the first working output port, thereby increasing the gas pressure in the rod chamber of the self-locking cylinder 13, thereby allowing the piston rod of the self-locking cylinder 13 to retract; when the pressure regulating valve handle is pushed down, the piston rod of the self-locking cylinder 13 can be extended in the same way; the larger the downward pushing angle, the greater the control gas pressure, the smaller the gap between the brake band 30 and the winch drum 20, and the greater the braking force on the winch drum 20; similarly, the larger the upward pushing angle, the larger the gap between the brake band 30 and the winch drum 20, and the greater the braking force on the winch drum 20. The smaller the braking force of the winch drum 20, the better. When the output control gas pressure is zero, the self-locking cylinder 13 can lock the current position, keeping the gap between the brake band 30 and the winch drum 20 constant. The entire operation requires only one operator to hold the pressure regulating valve handle with their left hand to brake and release the winch drum 20. The entire process is pneumatically controlled. For electrical control, it can achieve water ingress protection. Since most of the circuit or pneumatic system operation parts are currently concentrated on the operating platform at the rear of the workover rig, they are easily splashed by various mixed liquids during operation, causing water ingress into electrical components, resulting in corrosion, short circuits, or other malfunctions or hidden dangers. By adopting pneumatic control, there are no electrical or hydraulic control components. In the event of water ingress, it can reduce the malfunctions or other hidden dangers caused by water ingress.

[0033] The following are the relevant settings for the pneumatic combination pressure regulating valve 10:

[0034] Specifically, the pneumatic combination pressure regulating valve 10 is an existing device, mainly composed of two two-position three-way directional valves and one pressure reducing valve connected in series, equivalent to a three-position five-way directional pressure regulating valve, such as the Zhonghao ZTMR6-L6-F combination pressure regulating valve. Its specific control principle and structure are existing technology and will not be elaborated further here. The pressure regulating valve handle can automatically return to the neutral position; the upward and downward strokes of the pressure regulating valve handle are both within the range of 0–45°.

[0035] The following are the specifications regarding the self-locking cylinder 13:

[0036] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 and Figure 2 As shown, there are two self-locking cylinders 13; the two self-locking cylinders 13 are respectively used to fix them on both sides of the brake shaft 36; the connecting brackets 37 connected to each self-locking cylinder 13 are used to fix them on the brake shaft 36; the two self-locking cylinders 13 extend and retract synchronously.

[0037] Specifically, two self-locking cylinders 13 are used to form a main-auxiliary coordinated control, reducing wear and tear on the self-locking cylinders 13 and extending their service life. One of the self-locking cylinders 13 can be connected to the brake shaft 36 via an extension rod 38.

[0038] Other related control settings are explained below:

[0039] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 As shown, it also includes an emergency stop valve 11 and a normally closed shut-off valve 12; the input port of the emergency stop valve 11 and the input port of the normally closed shut-off valve 12 are both used to connect to the air supply equipment, the output port of the emergency stop valve 11 is connected to the control port of the normally closed shut-off valve 12, and the output port of the normally closed shut-off valve 12 is connected to the input port of the pneumatic combination valve.

[0040] Specifically, when the air pressure in the air circuit is insufficient, or when it is necessary to maintain the brake for a long time, the operator can press the emergency stop air valve 11 to activate the normally closed shut-off valve 12, thereby cutting off the air supply to the pneumatic combination pressure regulating valve 10, and thus keeping the self-locking cylinder 13 in a self-locking state, thereby achieving the purpose of maintaining the brake.

[0041] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1As shown, it also includes a manifold 14, which receives the vehicle-mounted compressed air 40. The input ports of the emergency stop valve 11 and the normally closed shut-off valve 12 are both connected to the manifold 14. The vehicle-mounted compressed air 40 enters through the manifold 14 and is divided into two air paths, which lead to the emergency stop valve 11 and the normally closed shut-off valve 12, respectively. Then, the normally closed shut-off valve 12 leads to the pneumatic combined pressure regulating valve 10, which is connected to two self-locking cylinders 13. Specifically, during normal use, the emergency stop valve 11 is in the unpressed state. The control gas enters from the left valve core P port of the emergency stop valve 11 and exits from the A port, then flows to the control port of the normally closed shut-off valve 12. When the input port of the normally closed shut-off valve 12 is vented, it is in the left valve core state. At this time, the other air pressure enters from the manifold 14 to the normally closed shut-off valve P port and exits from the A port, then flows to the P port of the pneumatic combined pressure regulating valve 10. When the pneumatic combination pressure regulating valve 10 handle is in the middle position, the valve core is also in the middle position. At this time, ports A and B (i.e., the first and second working output ports) release air through the silencer, and both self-locking cylinders 13 are in the self-locking state, with the piston rod maintaining its current position. When the operator pulls down or pushes up the pneumatic combination pressure regulating valve 10 handle, the valve core is located on the left or right side. At this time, the control gas enters from port P and exits from port B, or enters from port P and exits from port B and releases pressure from port A. The greater the angle at which the operator pulls down or pushes up, the greater the air pressure leading to port A or port B, and the faster and longer the stroke of the piston in the self-locking cylinder 13. When the piston of the self-locking cylinder 13 extends or retracts, it drives the brake shaft 36 to rotate, ultimately causing the brake band 30 to tighten or loosen, achieving the purpose of braking or releasing the brake.

[0042] In the optional schemes of this embodiment, it is more preferred that both the emergency stop valve 11 and the normally closed shut-off valve 12 are two-position three-way valves.

[0043] Example 2

[0044] This embodiment provides a winch drum brake device, such as Figure 1 and Figure 2 As shown, the device includes a brake band 30, a brake shaft 36, and a brake operating device as described above. The brake band 30 is fitted onto the winch drum 20 (the brake band 30 is an open ring wrapped around the winch drum 20, and a brake block is provided on the inner side of the brake band 30, with a uniform gap of approximately 3mm to 5mm between it and the circumference of the winch drum 20 (the gap size can be adjusted by adjusting the flower cap 32 and tension spring 34, etc.)). The fixed end 301 of the brake band 30 is kept fixed (it is fixed to the horizontal surface of the well repair vehicle body by adjusting the flower cap 32 and other components), and the movable end 302 of the brake band 30 is connected to the brake shaft 36. The brake shaft 36 is used to drive the movable end 302 of the brake band 30 to move closer to or further away from the winch drum 20. The piston rods of the respective locking cylinders 13 of the brake operating device are connected to the brake shaft 36 through corresponding connecting brackets 37.

[0045] The winch drum 20 is braked and released by using pneumatically controlled components. The overall operation is simple, convenient, and labor-saving, and does not require holding it for a long time.

[0046] Specifically, the brake band 30, the inner brake block, the fixed end 301 of the brake band 30, the movable end 302 of the brake band 30, the adjusting cap 32, the brake shaft 36, the crank 35, the tension spring 34, the gap adjustment mechanism, etc. are all the same as the components of a traditional manual band brake system.

[0047] Specifically, the modification of this device is simple. It can be improved on the basis of the traditional winch drum 20 manual belt brake system. Only the original brake handle, brake lever seat, and brake rod are removed, and some mechanical structures, air circuits, pneumatic combination pressure regulating valve 10, self-locking cylinder 13 and other pneumatic control components are added. It does not involve circuit or hydraulic control, and fault maintenance is simple.

[0048] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 2 As shown, the fixed end 301 of the brake band 30 is rotatably connected to the upper screw 31, the lower end of the upper screw 31 is threadedly connected to the adjusting cap 32, the lower end of the adjusting cap 32 is threadedly connected to the lower screw 33, and the lower end of the lower screw 33 is rotatably connected to the bottom bracket, which is used to fix it to the ground.

[0049] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 2 As shown, a tension spring 34 is also fixed on the outer wall of the brake band 30. One end of the tension spring 34 is used to maintain a relative position with the ground and is close to the movable end 302 of the brake band 30.

[0050] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 2 As shown, the movable end 302 of the brake band 30 is rotatably connected to a crank 35, and the end of the crank 35 away from the brake band 30 is rotatably connected to the brake shaft 36.

[0051] In the optional solutions of this embodiment, a gap adjustment mechanism is preferably provided on the outer side of the brake band 30. The gap adjustment mechanism is used to adjust the gap between the inner sidewall of the brake band 30 and the winch drum 20.

[0052] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A brake operating device, characterized in that: Includes a pneumatic combination pressure regulating valve and at least one self-locking cylinder; The pneumatic combination pressure regulating valve has a pressure regulating valve handle, a first working output port, and a second working output port. The first working output port and the second working output port are used to output control gas. The first working output port is connected to the rod chamber of each of the self-locking cylinders, and the second working output port is connected to the rodless chamber of each of the self-locking cylinders. The control gas pressure of the first working output port can increase as the upward angle of the pressure regulating valve handle increases, and the control gas pressure of the second working output port can increase as the downward angle of the pressure regulating valve handle increases. The self-locking cylinder is fixedly mounted on one side of the brake shaft. The piston rod end of the self-locking cylinder is rotatably connected to a connecting bracket around a first axis, which is parallel to the rotation axis of the brake shaft. The connecting bracket is fixedly mounted on the brake shaft. When the control gas output from the first working output port and the second working output port of the pneumatic combination pressure regulating valve is disconnected, each of the self-locking cylinders is in a self-locking state; and in the self-locking state, the current extension length of the piston rod of each of the self-locking cylinders remains unchanged.

2. The brake operating device according to claim 1, characterized by: The number of self-locking cylinders is two; The two self-locking cylinders are respectively fixedly mounted on both sides of the brake shaft; the connecting brackets connected to each self-locking cylinder are fixedly mounted on the brake shaft; the two self-locking cylinders extend and retract synchronously.

3. The brake operating device according to claim 1, characterized by: It also includes emergency stop valves and normally closed shut-off valves; The input port of the emergency stop valve and the input port of the normally closed shut-off valve are both used to connect to the air supply equipment. The output port of the emergency stop valve is connected to the control port of the normally closed shut-off valve, and the output port of the normally closed shut-off valve is connected to the input port of the pneumatic combination valve.

4. The brake operating device according to claim 3, characterized in that: It also includes a manifold for receiving on-board compressed air; the inlet of the emergency stop valve and the inlet of the normally closed shut-off valve are both connected to the manifold.

5. The brake operating device according to claim 3, characterized by: Both the emergency stop valve and the normally closed shut-off valve are two-position three-way valves.

6. A winch drum brake apparatus, characterized by: Includes a brake band, a brake shaft, and a brake operating device as described in any one of claims 1 to 5 above; The brake band is used to be fitted onto the winch drum; the fixed end of the brake band remains fixed, and the movable end of the brake band is connected to the brake shaft, which is used to drive the movable end of the brake band to move closer to or further away from the winch drum. The piston rods of each self-locking cylinder of the brake operating device are connected to the brake shaft via the corresponding connecting brackets.

7. A winch drum brake apparatus as claimed in claim 6, wherein: The fixed end of the brake band is rotatably connected to an upper screw, the lower end of the upper screw is threadedly connected to an adjusting cap, the lower end of the adjusting cap is threadedly connected to a lower screw, and the lower end of the lower screw is rotatably connected to a bottom bracket, which is used to fix it to the ground.

8. The winch drum brake apparatus of claim 6, wherein: A tension spring is also fixed to the outer wall of the brake band. One end of the tension spring is used to maintain a fixed relative position with the ground, and the tension spring is close to the movable end of the brake band.

9. The winch drum brake apparatus of claim 6, wherein: The movable end of the brake band is rotatably connected to a crank, and the end of the crank away from the brake band is rotatably connected to the brake shaft.

10. The winch drum brake device according to claim 6, characterized in that: The brake band outer side is further provided with a gap adjusting mechanism, which is used for adjusting the gap between the inner side wall of the brake band and the winch drum.

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