Hydraulic disc brake mechanism for workover rig

Abstract

The utility model provides a kind of hydraulic disc brake mechanism of workover rig, including winch, including brake disc, the brake disc is connected with the lateral wall of winch, both ends of the winch are equipped with support frame, the lateral wall and bottom of the support frame are equipped with outer wall brake assembly and lateral wall brake assembly respectively, the outer wall brake assembly includes the first brake plate controlled by first hydraulic push cylinder.The hydraulic disc brake mechanism of workover rig, by alternately working second hydraulic push cylinder of both sides when braking, and push second brake plate alternately with brake disc contact, prevent long time and the one side of brake disc contact cause overheating, the two sides of brake disc alternately paste to avoid brake failure caused by metal fatigue, and first hydraulic push cylinder push first brake plate and the lateral wall of brake disc contact brake, can avoid brake disc overheating and carry out efficient braking to workover rig winch.

Description

Technical Field

[0001] This utility model relates to the field of well workover rig technology, and in particular to a hydraulic disc brake mechanism for well workover rigs. Background Technology

[0002] Workover rigs are core equipment for downhole operations in oilfields, used for tasks such as running tubing, fishing, and drilling maintenance. The winch is a core component of the workover rig, with functions including running the drill string and controlling the traveling block speed. The poor braking performance of winches in existing workover rigs is due to poor fit between the traditional band brake or disc brake working tongs / safety tongs, resulting in insufficient localized friction. Furthermore, after prolonged braking of the brake disc, the friction pads and brake disc do not fully adhere, generating localized high temperatures. These high temperatures can cause brake disc deformation, cracking, or even brake failure. Therefore, existing braking mechanisms cannot achieve efficient braking and also carry the risk of overheating and failure. Utility Model Content

[0003] The purpose of this utility model is to provide a hydraulic disc brake mechanism for well workover rigs, which can effectively brake the brake disc by releasing overheating.

[0004] This utility model provides a hydraulic disc brake mechanism for a workover rig, including a winch and a brake disc. The brake disc is connected to the side wall of the winch. Both ends of the winch are provided with support frames. The side walls and bottom of the support frames are respectively provided with an outer wall brake assembly and a side wall brake assembly. The outer wall brake assembly includes a first brake plate controlled by a first hydraulic push cylinder, and the side wall brake assembly includes a second brake plate controlled by a second hydraulic push cylinder. The first brake plate and the second brake plate respectively contact the outer wall and end face of the brake disc for braking.

[0005] As a further optimization, the outer wall braking assembly includes a first mounting base and a mounting plate. The first mounting base is installed on the bottom side of the support frame. A first hydraulic push cylinder is installed inside the first mounting base. A push frame is installed at the output end of the first hydraulic push cylinder. The two ends of the mounting plate are installed on the support frame through limiting components. The upper and lower parts of the push frame are slidably connected to the mounting plate and the support frame through sliding grooves. There are two sliding grooves, which are respectively opened at the bottom of the mounting plate and on the support frame.

[0006] As a further optimization, the sidewall brake assembly is located on the front and rear side walls of the support frame. There are four sidewall brake assemblies on each side, which are distributed in a rectangular quadrant. The sidewall brake assembly includes a second mounting seat. One end of the second mounting seat is mounted on the support frame, and the other end of the second mounting seat is equipped with a second hydraulic push cylinder. The output end of the second hydraulic push cylinder is equipped with a second brake plate, which contacts the brake disc.

[0007] As a further optimization, the top of the support frame is provided with an emergency braking assembly, which includes a mounting tube, a mounting bracket, and a limiting hole. The mounting tube is installed through the top outer wall of the support frame, the mounting bracket is installed on the top side wall of the support frame, and the limiting hole is opened on the outer side wall of the brake disc. A brake rod is inserted inside the mounting tube, and a cover plate is installed on the top of the brake rod. A pneumatic telescopic rod is installed on the mounting bracket, and a clamp is installed at the output end of the pneumatic telescopic rod. The clamp is clamped on the lower surface of the cover plate. During emergency braking, the brake rod is inserted into the limiting hole to clamp the brake disc and perform braking.

[0008] As a further optimization, the limiting component includes a limiting rod and a mounting frame. The limiting rod is mounted on the surface of the support frame, and the mounting frame is mounted on the side wall of the mounting plate. Wheel frames are mounted on both inner side walls of the mounting frame, and rollers are mounted on the wheel frames. The outer wall of the rollers has slots, and the limiting rod is engaged inside the slots on the outer walls of the two rollers.

[0009] As a further optimization, the inclined surface of the push frame is provided with a rolling assembly, the rolling assembly including a ball groove, the ball groove being opened on the inclined surface of the push frame, and rolling balls being rolled inside the ball groove.

[0010] As a further optimization, the brake lever is made of high-alloy ultra-high-strength steel.

[0011] As a further optimization, the ball bearing is made of high manganese alloy.

[0012] This utility model provides an improved hydraulic disc brake mechanism for workover rigs, which has the following improvements and advantages compared with the prior art: During braking, the second hydraulic cylinders on both sides work alternately, pushing the second brake plates to alternately contact the brake disc. This prevents overheating caused by prolonged contact with one side of the brake disc, and the alternating contact between the two sides of the brake disc avoids metal fatigue leading to brake failure. Furthermore, the first hydraulic cylinder pushes the first brake plate to contact the side wall of the brake disc for braking. Combined with the multi-point contact braking of the brake disc by each second brake plate, this multi-point braking with alternating end-face braking effectively prevents overheating of the workover rig winch. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Enlarged structural diagram at point A (outer wall brake assembly); Figure 3 This utility model Figure 2 Enlarged structural diagram at point B (emergency braking assembly); Figure 4 This is a schematic diagram of the limiting component of this utility model; Figure 5 This is a schematic diagram of the structure of the outer wall brake assembly of this utility model; Figure 6 This is a schematic diagram of the sliding component of this utility model installed on the pusher frame; Figure 7 This is a schematic diagram of the brake rod and the limiting hole braking structure of this utility model; Explanation of reference numerals in the attached drawings: 1-Windmill, 2-Support frame, 3-Brake disc, 4-Brake part, 41-Outer wall brake assembly, 41a-First mounting seat, 41b-First hydraulic push cylinder, 41c-First brake plate, 41d-Push frame, 41e-Mounting plate, 42-Side wall brake assembly, 42a-Second mounting seat, 42b-Second hydraulic push cylinder, 42c-Second brake plate, 5-Limiting assembly, 51-Limiting rod, 52-Mounting frame, 53-Roller, 54-Slot, 6-Emergency braking assembly, 61-Cover plate, 62-Mounting tube, 63-Mounting bracket, 64-Pneumatic telescopic rod, 65-Card holder, 66-Connecting rod, 67-Brake rod, 68-Limiting hole, 7-Rolling assembly, 71-Ball groove, 72-Ball. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please see Figure 1-7 This utility model provides a technical solution for a hydraulic disc brake mechanism for a workover rig, including a winch 1, which is a lifting device used in the workover rig for winding and unwinding steel cables. It also includes a brake disc 3, which is integrated with the shaft of the winch 1. When the brake disc 3 is braked, the winch 1 is also braked. The brake disc 3 is connected to the side wall of the winch 1. Support frames 2 are provided at both ends of the winch 1. The support frames 2 are the mounting structure for the brake mechanism. Outer wall brake assemblies 41 and side wall brake assemblies 41 are respectively provided on the side walls and bottom of the support frames 2. The vehicle assembly 42 and the outer wall brake assembly 41 can contact the outer wall of the brake disc 3 for braking. The side wall brake assembly 42 contacts the side of the brake disc 3 for braking. The outer wall brake assembly 41 includes a first brake plate 41c controlled by a first hydraulic push cylinder 41b, and the side wall brake assembly 42 includes a second brake plate 42c controlled by a second hydraulic push cylinder 42b. The two second hydraulic push cylinders 42b work alternately. The first brake plate 41c and the second brake plate 42c respectively contact the outer wall and end face of the brake disc 3 for braking.

[0019] refer to Figure 1 , Figure 2 and Figure 5From the state shown, it can be seen that the side wall brake assembly 42 is located on both sides of the support frame 2 and on both sides of the brake disc 3. During braking, the second hydraulic push cylinders 42b on both sides work alternately and push the second brake plate 42c to alternately contact the brake disc 3. This prevents overheating caused by prolonged contact with one side of the brake disc 3. The alternating contact between the two sides of the brake disc 3 avoids metal fatigue and brake failure. Moreover, the first hydraulic push cylinder 41b pushes the first brake plate 41c to contact the side wall of the brake disc 3 for braking. Combined with the multi-point contact of the brake disc 3 by each second brake plate 42c, the brake disc can be braked efficiently without overheating.

[0020] refer to Figure 1 and Figure 2 The installation position and specific structure of the outer wall brake assembly 41 can be determined. The outer wall brake assembly 41 includes a first mounting base 41a and a mounting plate 41e. The mounting plate 41e is used to load the first brake plate 41c. The first mounting base 41a is installed on the bottom side of the support frame 2 and is used to load the first hydraulic push cylinder 41b. The first hydraulic push cylinder 41b is the power structure of the side wall brake assembly 41. The first hydraulic push cylinder 41b is installed inside the first mounting base 41a. A push frame 41d is installed at the output end of the first hydraulic push cylinder 41b. The push frame 41d is pushed along with the first hydraulic push cylinder 41b. Utilizing the gradually rising slope of the device, the mounting plate 41e and the first brake plate 41c are pushed up to contact the side wall of the brake disc 3 for braking. The two ends of the mounting plate 41e are mounted on the support frame 2 through the limiting components 5. The upper and lower parts of the push frame 41d are slidably connected to the mounting plate 41e and the support frame 2 through the sliding grooves 41f, respectively. There are two sliding grooves 41f, which are respectively opened at the bottom of the mounting plate 41e and on the support frame 2. After the push frame 41d is pushed, it slides inside the sliding grooves 41f, which limits the push frame 41d in the east-west direction, making the movement of the push frame 41d more stable.

[0021] like Figure 2 As shown, the first hydraulic push cylinder 41b is installed horizontally to avoid the limitation of installation space caused by the longitudinal installation of the first hydraulic push cylinder 41b. The first hydraulic push cylinder 41b pushes the push frame 41d to slide inside the sliding groove 41f. As it is pushed instantaneously, the inclined surface of the push frame 41d presses the mounting plate 41e to rise. The mounting plate 41e drives the first brake plate 41c on its surface to rise and contact the brake disc 3 to brake, so as to perform longitudinal braking on the brake disc 3.

[0022] like Figure 1 and Figure 5 As shown, Figure 5The middle view shows the symmetrical installation of the side wall brake assembly 42, revealing its installation position and quantity. The outer wall brake assemblies 42 are located on the front and rear side walls of the support frame 2, with four assemblies 42 on each side arranged in a rectangular quadrant. Each side wall brake assembly 42 includes a second mounting base 42a, one end of which is mounted on the support frame 2. The other end of the second mounting base 42a is fitted with a second hydraulic push cylinder 42b, and the output end of the second hydraulic push cylinder 42b is fitted with a second brake plate 42c, which contacts the brake disc 3.

[0023] When braking, the second hydraulic cylinder 42b on one side of the brake disc 3 extends and drives the second brake plate 42c to move. The second brake plate 42c contacts the brake disc 3 for braking. After a brief contact, the second brake plate 42c on the other side is pushed by the second hydraulic cylinder 42b to contact the brake disc 3 for braking. After another brief contact, the second brake plate 42c on the other side is replaced for braking. This alternating motion is used to prevent overheating during braking.

[0024] To respond to emergencies, the emergency braking assembly 6 can be used for rapid braking. The top of the support frame 2 is equipped with the emergency braking assembly 6, which includes a mounting tube 62, a mounting bracket 63, and a limiting hole 68. The mounting tube 62 is installed through the top outer wall of the support frame 2 and is used to load the brake lever 67. The mounting bracket 63 is installed on the top side wall of the support frame 2 and is used to install the pneumatic telescopic rod 64. The limiting hole 68 is opened on the outer side wall of the brake disc 3. The brake lever 67 is inserted inside the mounting tube 62. A cover plate 61 is installed on the top of the brake lever 67. The pneumatic telescopic rod 64 is installed on the mounting bracket 63. A clip 65 is installed at the output end of the pneumatic telescopic rod 64 and is clipped onto the lower surface of the cover plate 61. When braking in an emergency, the brake lever 67 is inserted into the limiting hole 68 and clamps the brake disc 3 for braking.

[0025] Under normal conditions, the extended state of the pneumatic telescopic rod 64 will cause the clamp 65 to lock the cover plate 61 and control the brake rod 67. When emergency braking is required, the pneumatic telescopic rod 64 retracts and causes the clamp 65 to stop limiting the cover plate 61. Due to gravity, the brake rod 67 falls inside the mounting tube 62. After the limiting hole 68 on the outer wall of the brake disc 3 rotates to the position of the brake rod 67, the brake rod 67 is locked into the inside of the limiting hole 68 for locking and limiting, thereby fixing and braking the brake disc 3 to deal with emergency braking.

[0026] like Figure 4As shown, in order to ensure the stability of the mounting plate 41e in the outer wall brake assembly 41, a limiting assembly 5 is used to dynamically support both ends of the mounting plate 41e. The limiting assembly 5 includes a limiting rod 51 and a mounting frame 52. The limiting rod 51 is installed on the surface of the support frame 2, and the mounting frame 52 is installed on the side wall of the mounting plate 41e. Wheel frames 55 are installed on both inner side walls of the mounting frame 52, and rollers 53 are installed on the wheel frames 55. The outer wall of the rollers 53 has a slot 54, and the limiting rod is locked inside the slot 54 on the outer wall of the two rollers 53.

[0027] When the mounting plate 41e moves, it drives the mounting frame 52 to move, and the mounting frame 52 drives the rollers 53 to move. The two rollers 53 drive the slot 54 to roll along the outer wall of the limit rod 51. With the effect of longitudinal dynamic limiting at both ends of the mounting plate 41e, the mounting plate 41e can be more stable when moving longitudinally.

[0028] like Figure 6 As shown, in order to make the pusher 41d press the mounting plate 41e more smoothly, the inclined surface of the pusher 41d is provided with a rolling assembly 7. The rolling assembly 7 includes a ball groove 71, which is opened on the inclined surface of the pusher 41d. A ball 72 is rolled inside the ball groove 71. When the pusher 41d pushes, the ball 72 on the surface is attached to the bottom of the mounting plate 41e and rotates inside the ball groove 71, thereby increasing the smoothness of the push by rotating instead of friction.

[0029] To ensure the strength of the brake lever 67 during emergency braking, the brake lever 67 is made of high-alloy ultra-high-strength steel, which can withstand instantaneous impacts and prevent breakage.

[0030] To increase the service life of ball bearing 72, ball bearing 72 is made of high manganese alloy, which has good wear resistance.

[0031] Working process: The first hydraulic pusher cylinder 41b pushes the pusher frame 41d to slide inside the sliding groove 41f. As it is pushed momentarily, the ball bearings 72 on the surface rotate inside the ball groove 71 while the pusher frame 41d is pushing. The inclined surface of the pusher frame 41d presses the mounting plate 41e upward. The mounting plate 41e drives the first brake plate 41c on its surface to rise and contact the brake disc 3 for braking, so as to brake the brake disc 3 longitudinally. The second hydraulic pusher cylinder 42b on one side of the brake disc 3 extends and drives the second brake plate 42c to move. The second brake plate 42c contacts the brake disc 3 for braking. After a brief contact, the second brake plate 42c on the other side is pushed by the second hydraulic pusher cylinder 42b to contact the brake disc 3 for braking. After another brief contact, the second brake plate 42c on the other side is replaced for braking.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hydraulic disc brake mechanism for a well workover rig, comprising a winch (1), characterized in that, The device includes a brake disc (3) connected to the side wall of a winch (1). Both ends of the winch (1) are provided with support frames (2). The side walls and bottom of the support frames (2) are respectively provided with an outer wall brake assembly (41) and a side wall brake assembly (42). The outer wall brake assembly (41) includes a first brake plate (41c) controlled by a first hydraulic push cylinder (41b). The side wall brake assembly (42) includes a second brake plate (42c) controlled by a second hydraulic push cylinder (42b). The first brake plate (41c) and the second brake plate (42c) respectively contact the outer wall and end face of the brake disc (3) for braking.

2. The hydraulic disc brake mechanism for a workover rig according to claim 1, characterized in that, The outer wall brake assembly (41) includes a first mounting base (41a) and a mounting plate (41e). The first mounting base (41a) is installed on the bottom side of the support frame (2). A first hydraulic push cylinder (41b) is installed inside the first mounting base (41a). A push frame (41d) is installed at the output end of the first hydraulic push cylinder (41b). Both ends of the mounting plate (41e) are installed on the support frame (2) through a limiting assembly (5). The upper and lower parts of the push frame (41d) are slidably connected to the mounting plate (41e) and the support frame (2) through sliding grooves (41f). There are two sliding grooves (41f), which are respectively opened at the bottom of the mounting plate (41e) and on the support frame (2).

3. The hydraulic disc brake mechanism for a workover rig according to claim 1, characterized in that, The side wall brake assembly (42) is provided on the front and rear side walls of the support frame (2). There are four side wall brake assemblies (42) on each side, which are distributed in a rectangular quadrant. The side wall brake assembly (42) includes a second mounting seat (42a). One end of the second mounting seat (42a) is mounted on the support frame (2). The other end of the second mounting seat (42a) is equipped with a second hydraulic push cylinder (42b). The output end of the second hydraulic push cylinder (42b) is equipped with a second brake plate (42c). The second brake plate (42c) is in contact with the brake disc (3).

4. The hydraulic disc brake mechanism for a workover rig according to claim 1, characterized in that, The top of the support frame (2) is provided with an emergency braking assembly (6). The emergency braking assembly (6) includes an installation tube (62), a mounting bracket (63), and a limiting hole (68). The installation tube (62) is installed through the top outer wall of the support frame (2). The mounting bracket (63) is installed on the top side wall of the support frame (2). The limiting hole (68) is opened on the outer side wall of the brake disc (3). A brake rod (67) is inserted inside the installation tube (62). A cover plate (61) is installed on the top of the brake rod (67). A pneumatic telescopic rod (64) is installed on the mounting bracket (63). A clip (65) is installed at the output end of the pneumatic telescopic rod (64). The clip (65) is clipped on the lower surface of the cover plate (61). When the brake rod (67) is in emergency braking, it is clipped into the limiting hole (68) to lock the brake disc (3) for braking.

5. A hydraulic disc brake mechanism for a workover rig according to claim 2, characterized in that, The limiting component (5) includes a limiting rod (51) and a mounting frame (52). The limiting rod (51) is mounted on the surface of the support frame (2). The mounting frame (52) is mounted on the side wall of the mounting plate (41e). Wheel frames (55) are mounted on both inner side walls of the mounting frame (52). Rollers (53) are mounted on the wheel frames (55). The outer wall of the rollers (53) has a slot (54). The limiting rod is engaged inside the slot (54) on the outer wall of the two rollers (53).

6. A hydraulic disc brake mechanism for a workover rig according to claim 2, characterized in that, The inclined surface of the push frame (41d) is provided with a rolling assembly (7), the rolling assembly (7) includes a ball groove (71), the ball groove (71) is opened on the inclined surface of the push frame (41d), and a ball (72) is rolled inside the ball groove (71).

7. A hydraulic disc brake mechanism for a workover rig according to claim 4, characterized in that, The brake lever (67) is made of high-alloy ultra-high strength steel.

8. A hydraulic disc brake mechanism for a well workover rig according to claim 6, characterized in that, The ball (72) is made of high manganese alloy.

Images