Tail end braking manned winch

Abstract

The utility model discloses a tail end braking manned winch, belongs to the technical field of winding equipment, and provides a high-reliability and high-safety tail end disc braking manned winch which comprises a rack, a hydraulic transmission device is fixedly connected to the rack, the output end of the hydraulic transmission device is fixedly connected with a winding drum, and a braking device is further arranged on the rack. The braking device and the hydraulic transmission device are located at the two ends of the winding drum respectively, an encoder is arranged on the end face of the braking device and suitable for detecting the rotating speed of the winding drum, the rack comprises a left support and a right support which are fixedly arranged, and the hydraulic transmission device is fixedly connected to the left side face of the left support. And synchronous rotation is kept. The multi-disc friction type brake is installed at the tail end of the winch transmission device and matched with the hindering effect provided after the hydraulic transmission device stops rotating, double mechanical braking is achieved, safety is high, and reliability is good.

Description

Technical Field

[0001] The present application relates to the technical field of winding equipment, and in particular to a terminal braking manned winch. Background Art

[0002] Traditional winches generally use input-end braking, which is a multi-disc friction brake inside the transmission device, and the opening and closing of the brake is automatically controlled by the shuttle valve on the motor. This braking method brakes at the high-speed end instead of at the end of the transmission, so for some places with higher requirements, especially winches with passenger requirements, this braking method cannot meet safety requirements. Summary of the invention

[0003] The present application mainly provides a manned winch with end disc brakes having high reliability and safety.

[0004] In order to achieve the above objectives, the present application provides a terminal braking manned winch: comprising a frame, a hydraulic transmission device is fixedly connected to the frame, a drum is fixedly connected to the output end of the hydraulic transmission device, a braking device is also arranged on the frame, the braking device and the hydraulic transmission device are respectively located at the two ends of the drum, and an encoder is arranged on the end face of the braking device, which is suitable for detecting the rotation speed of the drum, so as to more accurately judge whether the braking of the drum is completed.

[0005] As a preferred embodiment, the frame includes a fixed left support and a right support, the hydraulic transmission device is fixedly connected to the left side of the left support, the braking device includes a brake sleeve and a brake housing, the brake sleeve is connected to the reel and keeps synchronous rotation, the brake housing is fixedly connected to the right side of the right support, and the end face of the brake housing is provided with an oil cylinder, which is suitable for controlling the clutch state of the braking device, and the braking device will provide braking force when it is engaged, and the rotation can be resumed when the braking device is disengaged.

[0006] As a preferred embodiment, the main part of the brake housing is a shell, the inner wall of the shell has spline teeth, a static friction plate is embedded in the shell, and is suitable for cooperating with the spline teeth to form a sliding pair; the main part of the brake sleeve is a shaft sleeve, the outer side surface of the shaft sleeve has external key teeth, and the outer sleeve is provided with a dynamic friction plate, which is suitable for cooperating with the external key teeth to form a sliding pair, and the oil cylinder is suitable for changing the pressing state of the dynamic friction plate and the static friction plate, and the friction plate can transmit a strong torque when being pressed.

[0007] As a preferred embodiment, the oil cylinder includes a cylinder barrel fixedly connected to the housing, a piston movably connected in the cylinder barrel, a back seat fixedly connected to the end face of the cylinder barrel, the piston includes a plug ring, one end of the plug ring is fixedly connected to a plug rod, and a disc spring is arranged between the other end and the back seat, which is suitable for allowing the plug rod to apply pressure to the dynamic friction plate and the static friction plate through the plug ring, an oil chamber is formed between the end face of the plug rod arranged on the plug ring and the inner wall of the cylinder barrel, and an oil port connected to the oil chamber is opened on the outer side face of the cylinder barrel for connecting to an external hydraulic pipeline.

[0008] Preferably, the end face of the reel is fixedly connected with a coaxial supporting shaft, the inner side face of the right support is provided with a fixing ring, the fixing ring cooperates with the supporting shaft via a bearing to form a rotating pair, an end cover is engaged in the fixing ring, suitable for limiting the bearing in the fixing ring, the right support is provided with an axial hole located in the fixing ring, suitable for the supporting shaft to pass through and cooperate with the bushing, the structure is compact and there is no motion interference.

[0009] As a preference, a spline groove is provided on the outer side surface of the supporting shaft, and the inner wall of the sleeve has internal key teeth suitable for plugging into the spline groove, so as to facilitate compact disassembly and assembly operations.

[0010] As a preferred embodiment, there are several dynamic friction plates and several static friction plates, and the dynamic friction plates and the static friction plates are arranged at intervals to transmit a greater friction force.

[0011] Preferably, the inner wall of the shell is also fixedly connected with a limiting ring close to the right support, which is suitable for providing support force to the dynamic friction plate and the static friction plate and limiting the position of the friction plate.

[0012] As a preferred embodiment, the end face of the supporting shaft is fixedly connected to an extension shaft, the end face of the extension shaft is provided with a clearance hole, the encoder is fixedly connected to the outer end face of the rear seat, the rear seat is provided with a through hole passing through the two end faces, one end of the encoder is provided with a detection end, which is suitable for passing through the through hole and extending into the clearance hole, and the other end of the encoder is provided with a signal end for electrically connecting to a processor.

[0013] Preferably, the main body of the reel is a cylinder, the end face of the cylinder is fixedly connected to the output end of the hydraulic transmission device, and the outer side surface of the cylinder is fixedly connected to a pair of retaining rings respectively close to both ends to prevent the wound cable from escaping from the two ends of the cylinder.

[0014] Compared with the prior art, the beneficial effects of this application are:

[0015] (1) By installing a multi-disc friction brake at the end of the winch transmission device, combined with the blocking effect provided by the hydraulic transmission device after it stops, dual mechanical braking is achieved, which is highly safe and reliable;

[0016] (2) The design has a compact structure, high working stability, rapid braking and good stability. The friction plate that provides the braking force is easy to disassemble and assemble, and the cost of maintenance and replacement is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a plan cross-sectional view of the general assembly structure of the terminal brake manned winch;

[0018] Figure 2 A plan cross-sectional view of the brake device of the terminal brake manned winch;

[0019] Figure 3 A plan cross-sectional view of the connection between the oil cylinder and the brake housing of the terminal brake manned winch;

[0020] Figure 4 A plan cross-sectional view of a brake sleeve of the end brake manned winch;

[0021] Figure 5 It is a plan cross-sectional view of the drum of the end brake manned winch.

[0022] In the figure: 1, hydraulic transmission device; 2, drum; 201, cylinder; 202, retaining ring; 203, supporting shaft; 204, spline groove; 205, extension shaft; 206, clearance hole; 3, brake sleeve; 301, shaft sleeve; 302, internal key teeth; 303, external key teeth; 304, dynamic friction plate; 4, brake housing; 401, housing; 402, spline teeth; 403, static friction plate; 404, limit ring; 5 , frame; 501, left support; 520, right support; 521, fixing ring; 522, shaft hole; 523, bearing; 524, end cover; 6, oil cylinder; 610, cylinder barrel; 611, oil port; 620, rear seat; 621, through hole; 603, disc spring; 640, piston; 641, plug; 642, plug ring; 605, oil chamber; 7, encoder; 701, detection end; 702, signal end. DETAILED DESCRIPTION

[0023] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0026] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0027] like Figure 1-5 The end-brake manned winch shown includes a frame 5, which includes a fixed left support 501 and a right support 520. A hydraulic transmission device 1 is fixedly connected to the frame 5, and the hydraulic transmission device 1 is fixedly connected to the outer side of the left support 501 facing away from the right support 520, that is, the left side. The output end of the hydraulic transmission device 1 is fixedly connected to a drum 2, and the drum 2 is located on the right side of the left support 501. The main part of the drum 2 is a cylindrical barrel 201. In fact, only one end face of the barrel 201 is fixedly connected to the output end of the hydraulic transmission device 1, and the output end is colinear with the axis of the barrel 201. A pair of retaining rings 202 close to the two ends are fixedly connected to the outer side of the barrel 201 to prevent the wound cable from slipping out of the two ends of the barrel 201.

[0028] A braking device is also provided on the frame 5. The braking device and the hydraulic transmission device 1 must be located at the two ends of the reel 2 respectively. Since the hydraulic transmission device 1 is already located at the left end of the reel 2, the braking device can only be located at the right end of the reel 2, and the main part of the braking device is mostly located on the right side of the right support 520. The braking device includes a braking sleeve 3 and a brake housing 4. The braking sleeve 3 is connected to the reel 2 and keeps synchronous rotation. The main part of the braking sleeve 3 is a shaft sleeve 301. The outer side surface of the shaft sleeve 301 has an external key tooth 303. The outer sleeve 301 is provided with a dynamic friction plate 304. The inner arm of the dynamic friction plate 304 is provided with a sliding groove corresponding to the external key tooth 303, which just cooperates with the external key tooth 303 to form a sliding pair. The dynamic friction plate 304 can only move relative to the shaft sleeve 3. 01 slides but cannot rotate relatively; the brake housing 4 is fixedly connected to the right side surface of the right support 520, the main part of the brake housing 4 is the shell 401, the inner wall of the shell 401 has spline teeth 402, a static friction plate 403 is embedded in the shell 401, the static friction plate 403 also begins to have a slide groove corresponding to the spline teeth 402, which just cooperates with the spline teeth 402 to form a sliding pair, the static friction plate 403 can only slide relative to the shell 401 and cannot rotate relatively; there are several dynamic friction plates 304 and static friction plates 403, and usually, the number of the two is the same, the dynamic friction plates 304 and the static friction plates 403 are arranged at intervals, so that the total contact area is maximized, the transmitted friction force will be more stable, and the transmittable torque will be greater.

[0029] The end surface of the brake housing 4 is provided with an oil cylinder 6 for controlling the clutch state of the brake device. The oil cylinder 6 includes a cylinder barrel 610 fixedly connected to the housing 401, a piston 640 movably connected inside the cylinder barrel 610, a back seat 620 fixedly connected to the end surface of the cylinder barrel 610 for sealing the open end of the cylinder barrel 610, and the piston 640 includes a plug ring 642, the outer side surface of the plug ring 642 is tightly fitted with the inner wall of the cylinder barrel 610, one end of the plug ring 642 is fixedly connected with a plug column 641, and a disc spring 603 is provided between the other end and the back seat 620. The disc spring 603 has a deformation caused by pre-stressing, which will allow the plug column 641 to apply pressure to the dynamic friction plate 304 and the static friction plate 403 through the plug ring 642, so that the dynamic friction plate 304 and the static friction plate 40 3 is in a pressed state, and the inner wall of the housing 401 is also fixedly connected with a limit ring 404 close to the right support 520, which is used to provide a supporting force to the dynamic friction plate 304 and the static friction plate 403 to resist the elastic force of the disc spring 603, thereby limiting the maximum leftward displacement of all friction plates. An oil chamber 605 is formed between the end surface of the plug rod 641 provided with the plug ring 642 and the inner wall of the cylinder 610, and an oil port 611 connected to the oil chamber 605 is provided on the outer side of the cylinder 610. The oil port 611 is connected to the external hydraulic system, and the pressed state of the dynamic friction plate 304 and the static friction plate 403 can be changed by injecting hydraulic oil into the oil chamber 605 of the oil cylinder 6, which is actually to release the pressed state so that the dynamic friction plate 304 can move relative to the static friction plate 403.

[0030] The end surface of the reel 2 is fixedly connected with a coaxial support shaft 203. The inner side surface of the right support 520 has a fixing ring 521. The fixing ring 521 cooperates with the support shaft 203 through a bearing 523 to form a rotating pair. The outer ring of the bearing 523 is fixed to the fixing ring 521; the inner ring rotates synchronously with the support shaft 203. An end cover 524 is engaged in the fixing ring 521. The end cover 524 is fixed in the fixing ring 521 by a retaining spring, which is used to limit the bearing 523 in the fixing ring 521. The right support 520 is provided with a fixing ring 524 located in the fixing ring 521. 1, the axis of the shaft hole 522 is colinear with the axis of the bearing 523, and the inner diameter of the shaft hole 522 is smaller than the outer diameter of the bearing 523, which can limit the bearing 523 from coming out of the fixing ring 521, and can also allow the support shaft 203 to pass through and cooperate with the sleeve 301. In order to achieve the cooperation, a spline groove 204 is provided on the outer side of the support shaft 203, and the inner wall of the sleeve 301 has an internal key tooth 302, which is just inserted into the spline groove 204, so that the sleeve 301 can be easily installed and disassembled.

[0031] The end face of the braking device is provided with an encoder 7 for detecting the rotation speed of the drum 2, so as to determine whether the winch is braked to stop. The end face of the supporting shaft 203 is fixedly connected with an extension shaft 205, which will pass through a disc spring 603 with a center hole. The end face of the extension shaft 205 is also provided with a clearance hole 206. The encoder 7 is fixedly connected to the outer end face of the rear seat 620, and the rear seat 620 is provided with a through hole 621 passing through the two end faces. One end of the encoder 7 is provided with a detection end 701, which just passes through the through hole 621 and extends into the clearance hole 206. There is a magnetic mark in the clearance hole 206. The detection end 701 can know the rotation speed of the drum 2 by sensing the number of times the magnetic mark is skipped per unit time. When the rotation speed is zero, it means that the drum 2 has been braked to stop. The other end of the encoder 7 is provided with a signal end 702, which is used to connect to the processor of the device and can convert the detected electrical signal into more intuitive data.

[0032] Working principle: The hydraulic transmission device 1 is installed on the frame 5. The output end of the hydraulic transmission device 1 is connected to the drum 2, driving the drum 2 to rotate. The right end of the right support shaft 203 on the right side of the drum 2 is connected to the sleeve 301 through a spline. The sleeve 301 is also connected to the dynamic friction plate 304 through a spline. The static friction plate 403 is connected to the housing 401 of the brake housing 4 through a spline. The housing 401 is fixed to the frame 5 by bolts. The piston 640 presses the dynamic friction plate 304 and the static friction plate 403 tightly together under the pressure of the disc spring 603. At this time, the support shaft 203 on the right side of the drum 2 is in a braking state. When high-pressure oil is introduced into the oil port 611 on the oil cylinder 6, the piston 640 moves to the right, and the dynamic friction plate 304 and the static friction plate 403 are disengaged after losing pressure. At this time, the brake device is opened. The brake device is a normally closed type. Under normal working conditions, the opening and closing of the brake device is automatically controlled by the shuttle valve on the hydraulic motor valve group.

[0033] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A terminal brake manned winch, characterized in that: The invention comprises a frame (5), a hydraulic transmission device (1) is fixedly connected to the frame (5), a reel (2) is fixedly connected to the output end of the hydraulic transmission device (1), a braking device is also arranged on the frame (5), the braking device and the hydraulic transmission device (1) are respectively located at two ends of the reel (2), and an encoder (7) is arranged on the end surface of the braking device, which is suitable for detecting the rotation speed of the reel (2).

2. The terminal brake manned winch according to claim 1, characterized in that: The frame (5) includes a fixed left support (501) and a right support (520), the hydraulic transmission device (1) is fixedly connected to the left side of the left support (501), the braking device includes a brake sleeve (3) and a brake housing (4), the brake sleeve (3) is connected to the reel (2) and keeps synchronous rotation, the brake housing (4) is fixedly connected to the right side of the right support (520), and the end face of the brake housing (4) is provided with a cylinder (6) suitable for controlling the clutch state of the braking device.

3. The terminal brake manned winch according to claim 2, characterized in that: The main part of the brake housing (4) is a shell (401), the inner wall of the shell (401) has spline teeth (402), and a static friction plate (403) is embedded in the shell (401), which is suitable for cooperating with the spline teeth (402) to form a sliding pair; the main part of the brake sleeve (3) is a shaft sleeve (301), the outer side surface of the shaft sleeve (301) has external key teeth (303), and the outer sleeve of the shaft sleeve (301) is provided with a dynamic friction plate (304), which is suitable for cooperating with the external key teeth (303) to form a sliding pair, and the oil cylinder (6) is suitable for changing the pressing state of the dynamic friction plate (304) and the static friction plate (403).

4. The terminal brake manned winch according to claim 3, characterized in that: The oil cylinder (6) comprises a cylinder barrel (610) fixedly connected to the housing (401), a piston (640) being movably connected inside the cylinder barrel (610), a rear seat (620) being fixedly connected to the end face of the cylinder barrel (610), the piston (640) comprising a plug ring (642), one end of the plug ring (642) being fixedly connected to a plug rod (641), a disc spring (603) being arranged between the other end and the rear seat (620), and being suitable for allowing the plug rod (641) to apply pressure to the dynamic friction plate (304) and the static friction plate (403) through the plug ring (642), an oil cavity (605) being formed between the end face of the plug rod (641) arranged on the plug ring (642) and the inner wall of the cylinder barrel (610), and an oil port (611) communicating with the oil cavity (605) is arranged on the outer side face of the cylinder barrel (610).

5. The terminal brake manned winch according to claim 4, characterized in that: The end surface of the reel (2) is fixedly connected to a coaxial supporting shaft (203); the inner side surface of the right support (520) is provided with a fixing ring (521); the fixing ring (521) cooperates with the supporting shaft (203) via a bearing (523) to form a rotating pair; an end cover (524) is engaged in the fixing ring (521) and is suitable for restricting the bearing (523) in the fixing ring (521); the right support (520) is provided with an axial hole (522) located in the fixing ring (521) and is suitable for allowing the supporting shaft (203) to pass through and cooperate with the shaft sleeve (301).

6. The terminal brake manned winch according to claim 5, characterized in that: The outer side surface of the support shaft (203) is provided with a spline groove (204), and the inner wall of the shaft sleeve (301) has internal key teeth (302) suitable for being inserted into the spline groove (204).

7. The terminal brake manned winch according to claim 6, characterized in that: There are a plurality of the dynamic friction plates (304) and the static friction plates (403), and the dynamic friction plates (304) and the static friction plates (403) are arranged at intervals.

8. The terminal brake manned winch according to claim 7, characterized in that: The inner wall of the housing (401) is also fixedly connected with a limiting ring (404) close to the right support (520), which is suitable for providing support force to the dynamic friction plate (304) and the static friction plate (403).

9. The terminal brake manned winch according to any one of claims 5 to 7, characterized in that: The end face of the supporting shaft (203) is fixedly connected to an extension shaft (205), and a clearance hole (206) is provided on the end face of the extension shaft (205). The encoder (7) is fixedly connected to the outer end face of the rear seat (620), and a through hole (621) is provided on the rear seat (620) that passes through both end faces. A detection end (701) is provided at one end of the encoder (7), which is suitable for passing through the through hole (621) and extending into the clearance hole (206), and a signal end (702) is provided at the other end of the encoder (7).

10. The terminal brake manned winch according to any one of claims 1 to 8, characterized in that: The main body of the reel (2) is a cylinder (201), the end surface of the cylinder (201) is fixedly connected to the output end of the hydraulic transmission device (1), and the outer side surface of the cylinder (201) is fixedly connected to a pair of retaining rings (202) respectively close to the two ends.

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