Multi-channel braking device of mine hoist

Abstract

The utility model relates to the technical field of mine hoists, in particular to a multi-channel braking device of a mine hoist, which comprises a mounting plate, two racks, a rotating roller and a winding roller, fixing plates are fixed on the top surface of the mounting plate close to the left end and the right end, the two racks are fixed on the top surface of the mounting plate and positioned between the two fixing plates, and the rotating roller is fixed on the mounting plate. The rotating roller is rotationally connected between the two racks, the winding roller is coaxially fixed to the outer wall of the circumference of the rotating roller, mounting discs are coaxially fixed to the surfaces of the left side and the right side of the rotating roller, and a plurality of braking mechanisms are arranged between the fixing plate and the mounting disc on the same side. According to the utility model, the two mounting discs with the brake friction surfaces, the two fixing plates and the plurality of brake mechanisms on the outer walls of the fixing plates are arranged to form a multi-channel brake system, so that the problem that the brake effect of the whole device is influenced due to the damage of individual brake structures is solved; and safe and stable braking of the mine hoist under complex working conditions is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to mine hoist technical field, concretely is a kind of multi-channel brake device of mine hoist. BACKGROUND

[0002] In mine hoist operation, hoist is the key equipment, and hoist needs to be equipped with brake device when being used to brake.

[0003] The patent with the publication number CN222410645U discloses a mine hoist, which comprises a base, support frames are fixed at both ends of the top end of the base, a main guide wheel is rotatably connected between the two support frames, one end of one of the support frames is fixed with a driving motor, the output end of the driving motor is fixed with the main guide wheel, the other end of the other support frame is fixed with a protective box, a brake disc is fixed at one end of the main guide wheel through the protective box, and a speed limiting positioning mechanism for braking the main guide wheel is arranged in the protective box.

[0004] Although the speed limiting positioning mechanism is used to brake and limit the brake disc, the stability of the lifted object during lifting is facilitated, the braking effect of the lifting device is improved, and the probability of rapid descent of the object is greatly reduced, the device has limitations in braking, and the device only uses single-channel braking mode for braking work. This braking mode has defects. Once one of the components in the braking structure fails, the entire braking system is difficult to maintain normal braking function, which can easily cause serious safety accidents, not only threatening the life safety of underground workers, but also causing serious damage to mine production equipment. Under this background, it is particularly important to develop a braking device with multi-channel braking mode. The multi-channel brake device of mine hoist of the present application is born in response to the problem, and is designed to solve the above problems of mine hoist. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of multi-channel brake device of mine hoist, by setting up two installation discs with brake friction surface, two fixed plates and several brake mechanisms on the outer wall of fixed plate, constitute multi-channel brake system, solve the problem that the braking effect of the entire device is affected due to the damage of individual brake structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a kind of multi-channel brake device of mine hoist, including mounting plate, two racks, rotating roller and winding roller, fixed plate is fixed on the top surface of mounting plate near left and right ends, two The rack is fixed on the top surface of mounting plate and is located between two fixed plates, the rotating roller is rotatably connected between two racks, the winding roller is coaxially fixed on the circumferential outer wall of rotating roller, the same side mounting disc is coaxially fixed on the left and right side surfaces of rotating roller, a plurality of brake mechanisms are arranged between the fixed plate and the same side mounting disc, the brake mechanism includes hydraulic cylinder, sleeve, spring and brake disc, the hydraulic cylinder is installed on the side surface of fixed plate near winding roller, the sleeve is fixed on the side surface of hydraulic cylinder piston rod near winding roller, one end of the spring is installed on the side surface of sleeve near winding roller, the brake disc is installed on the other end of spring and used to brake mounting disc.

[0008] As a preferred embodiment, a plurality of mounting holes are arranged on the top surface of the mounting plate in a matrix pattern.

[0009] As a preferred embodiment, a through slot is arranged on the top surface of the mounting plate, and the through slot corresponds in position and size to the winding roller.

[0010] The two arrangements make the device easy to install and fix in the desired position, enhance the installation flexibility, make the winding roller operate without obstruction, facilitate the passage of cable, and reduce the risk of entanglement.

[0011] As a preferred embodiment, the two racks are located between the two mounting discs, and the side surface of the mounting disc away from the winding roller is provided with a brake friction surface.

[0012] This arrangement makes the rotating roller rotate stably and provides a brake surface for the brake mechanism.

[0013] As a preferred embodiment, the brake disc is installed at one end of the same side spring near the winding roller through a backing plate, the backing plate is fixed on the side surface away from the same side mounting disc, and the spring is movably sleeved on the outside of the same side insertion rod.

[0014] As a preferred embodiment, two limiting grooves are arranged on the inner wall of the sleeve, and two limiting strips are fixed on the outer wall of the insertion rod and slidably connected with the same side limiting grooves on the inner wall of the sleeve.

[0015] As a preferred embodiment, the longitudinal section shape of the limiting groove on the inner wall of the sleeve is in the shape of an I-beam, and the limiting strip is in the shape of an I-beam that matches the shape of the limiting groove on the inner wall of the sleeve.

[0016] As a preferred embodiment, the brake mechanism further comprises a pressure sensor mounted inside the hydraulic cylinder body and used for detecting oil pressure, the brake mechanisms on the outer wall of the fixed plate are arranged in a ring shape at equal intervals, the side surface of the brake disc close to the winding roller is in close contact with the side surface of the mounting disc away from the winding roller, and the brake disc is made of semi-metallic friction material or ceramic-based friction material.

[0017] The four settings make the brake disc contact the mounting disc flexibly for braking, the spring can buffer the braking force, the insertion rod slides stably in the sleeve, the movement track of the brake disc is stable, the insertion rod is prevented from coming out, the reliability of the brake mechanism is improved, the braking effect of the brake disc is good, and the brake disc is wear-resistant.

[0018] Compared with the prior art, the brake mechanism has the following beneficial effects:

[0019] 1. The mounting disc is coaxially fixed with the left and right side surfaces of the winding roller, the braking friction surface is arranged on the side surface of the mounting disc away from the winding roller, and the brake mechanisms are arranged between the fixed plate and the mounting disc on the same side, so that the mounting disc is braked from multiple channels, the multiple brake mechanisms can act on the mounting disc simultaneously when the winding roller needs to be braked, compared with a single brake structure, the multiple-channel braking mode greatly improves the reliability and stability of braking, and the effect that the braking effect of the entire device is not affected by damage of individual brake structures is achieved, even if a brake mechanism fails, other brake mechanisms can still play a braking role, and the mine hoist can be safely and effectively braked in various situations.

[0020] 2. The fixed plate is fixed to the top surface of the mounting disc close to the left and right ends, and the brake mechanisms are arranged on the outer wall of the fixed plate in a ring shape at equal intervals, so that the brake force is evenly distributed and the braking effect is comprehensive, the ring-shaped and equally-spaced arrangement mode enables the brake disc to uniformly apply braking force when contacting the braking friction surface of the mounting disc, avoids uneven wear of the mounting disc caused by uneven braking force, improves the service life and working efficiency of the entire brake device, ensures the stability of the mine hoist during braking, and reduces additional impact and damage to other parts of the hoist caused by unstable braking. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic view of the overall structure of the utility model;

[0022] Figure 2 It is a schematic view of the local structure in the utility model;

[0023] Figure 3 It is a schematic view of the overall structure of the brake mechanism in the utility model;

[0024] Figure 4 It is the internal structure schematic view of the hydraulic cylinder in the utility model;

[0025] Figure 5 It is the partial sectional view in the utility model;

[0026] The meaning of each reference numeral in the drawing is as follows:

[0027] 1, mounting plate; 2, rack; 3, rotating roller; 4, winding roller; 5, mounting disc; 6, fixed plate; 7, brake mechanism; 71, hydraulic cylinder; 72, sleeve; 73, spring; 74, backing plate; 75, inserting rod; 76, brake disc; 77, limiting strip; 78, pressure sensor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] Please refer to Figures 1-2 The utility model provides a kind of technical solutions: a kind of mine hoist multi-channel brake device, including mounting plate 1, two racks 2, rotating roller 3 and winding roller 4, fixed plate 6 is fixed in mounting plate 1 top surface near left and right two end places, two racks 2 are fixed on mounting plate 1 top surface and are located between two fixed plates 6, rotating roller 3 is rotationally connected between two racks 2, winding roller 4 is coaxially fixed on the circumferential outer wall of rotating roller 3, and mounting disc 5 is coaxially fixed on the left and right two side surfaces of rotating roller 3;

[0030] By the collaborative setting of mounting plate 1, fixed plate 6, rack 2, rotating roller 3, winding roller 4 and mounting disc 5, the stable operation framework of entire brake device is built, mounting plate 1 provides installation basis for each component, fixed plate 6 cooperates with rack 2, and rotating roller 3 is stably supported, to ensure that it can rotate flexibly, winding roller 4 is coaxially fixed on rotating roller 3, and rotates synchronously with rotating roller 3, to realize the winding and release of cable, and mounting disc 5 is fixed on the two sides of rotating roller 3, to provide acting object for brake mechanism 7, each component works cooperatively, to guarantee the basic operation of mine hoist and the implementation of brake operation.

[0031] A plurality of mounting holes are arranged on the top surface of mounting plate 1 in matrix form.

[0032] A through slot is arranged on the top surface of mounting plate 1, and the through slot on the top surface of mounting plate 1 corresponds to the position of winding roller 4 and is appropriately sized.

[0033] The installation holes arranged in matrix on the top surface of the mounting plate 1 make the device have great flexibility during installation. The matrix arrangement can adapt to various installation scenes and fixing requirements. Whether on the main structure of the mine hoist or on a specific installation platform, the device can be fixed conveniently and firmly by selecting appropriate installation holes, thereby enhancing the universality and operability of the device in actual application.

[0034] The through slot corresponding in position and size to the winding roller 4 on the top surface of the mounting plate 1 allows the cable to smoothly enter and exit the through slot when the winding roller 4 is in operation, effectively reducing the friction and winding risk between the cable and the mounting plate 1. At the same time, the arrangement of the through slot does not significantly weaken the structural strength of the mounting plate 1, and also provides convenience for the maintenance and overhaul of the winding roller 4. When the winding roller 4 needs to be maintained, the relevant parts of the winding roller 4 can be more conveniently accessed through the through slot.

[0035] In this embodiment, as shown in Figures 1-2 , the two racks 2 are located between the two mounting plates 5, and the side surface of the mounting plate 5 away from the winding roller 4 is provided with a brake friction surface;

[0036] By placing the two racks 2 between the two mounting plates 5 and providing the mounting plate 5 with a brake friction surface, the rotating roller 3 rotates more stably under the support of the rack 2, reducing the shaking and deviation during rotation. The brake friction surface of the mounting plate 5 provides an effective brake contact area for the brake disc 76. When the brake mechanism 7 is working, the brake disc 76 tightly abuts against the brake friction surface, achieving brake of the mounting plate 5, and then the rotating roller 3 and the winding roller 4 through friction force, thereby ensuring the efficiency and stability of the brake process.

[0037] In addition, as shown in Figure 1 , Figures 3-5 , a plurality of brake mechanisms 7 are arranged between the fixed plate 6 and the mounting plate 5 on the same side. The brake mechanism 7 includes a hydraulic cylinder 71 mounted on the side surface of the fixed plate 6 close to the winding roller 4, a sleeve 72 fixed on the piston rod of the hydraulic cylinder 71 close to the side surface of the winding roller 4, a spring 73 mounted on one end of the sleeve 72 close to the side surface of the winding roller 4, and a brake disc 76 mounted on the other end of the spring 73 for braking the mounting plate 5.

[0038] The brake disc 76 is mounted on one end of the spring 73 on the same side close to the winding roller 4 through a backing plate 74. The side surface of the backing plate 74 away from the mounting plate 5 on the same side is fixed with a plug rod 75 slidingly inserted into the sleeve 72 on the same side, and the spring 73 is movably sleeved outside the plug rod 75 on the same side.

[0039] Two limiting grooves are arranged on the inner wall of the sleeve 72, and two limiting strips 77 are fixed on the outer wall of the inserting rod 75 and are in sliding connection with the limiting grooves on the same side of the inner wall of the sleeve 72.

[0040] The longitudinal section shape of the limiting groove on the inner wall of the sleeve 72 is in the shape of an I-beam, and the shape of the limiting strip 77 is in the shape of an I-beam that is matched with the shape of the limiting groove on the inner wall of the sleeve 72.

[0041] The brake mechanism 7 further comprises a pressure sensor 78 that is installed inside the cylinder body of the hydraulic cylinder 71 and is used for detecting the oil pressure, and a plurality of brake mechanisms 7 on the outer wall of the fixed plate 6 are arranged in a ring shape at equal intervals, the brake disc 76 is in close contact with the side surface of the mounting disc 5 away from the winding roller 4 on the same side, and the brake disc 76 is made of semi-metallic friction material or ceramic-based friction material.

[0042] Through the connection mode of the brake disc 76, the gasket 74, the inserting rod 75, the sleeve 72 and the spring 73, the brake disc 76 has good buffering performance in the working process. When the hydraulic cylinder 71 pushes the sleeve 72, the spring 73 can elastically deform according to the actual pressure when the brake disc 76 is in contact with the mounting disc 5, so as to avoid excessive wear or damage to the brake disc 76 and the mounting disc 5 due to excessive instantaneous braking force. At the same time, the sliding insertion mode of the inserting rod 75 and the sleeve 72 ensures the stability of the brake disc 76 in the moving process, so that it can accurately contact the brake friction surface of the mounting disc 5 and apply a braking force;

[0043] Through the sliding connection of the limiting groove on the inner wall of the sleeve 72 and the limiting strip 77 on the outer wall of the inserting rod 75, the sliding track of the inserting rod 75 in the sleeve 72 is accurately constrained, the limiting strip 77 slides in the limiting groove, effectively preventing the inserting rod 75 from deviating or rotating during movement, and ensuring that the brake disc 76 always contacts the brake friction surface of the mounting disc 5 in the correct posture, thereby ensuring the consistency and stability of the braking effect and improving the reliability of the brake mechanism 7 in work;

[0044] Through the matching I-beam shape of the limiting groove on the inner wall of the sleeve 72 and the limiting strip 77, the connection between them is more stable. The structure design of the I-beam shape increases the contact area and friction force between the limiting strip 77 and the limiting groove. Even if a larger impact force or vibration is applied during braking, the limiting strip 77 is not easy to come out of the limiting groove, further improving the reliability and durability of the brake mechanism 7 and ensuring that the entire brake device can work stably and continuously under complex working conditions;

[0045] The pressure sensor 78 is installed in the hydraulic cylinder 71, so that the operator can monitor the oil pressure change in the hydraulic cylinder 71 in real time. The stability of the oil pressure is directly related to the braking force and stability of the brake mechanism 7. The data fed back by the pressure sensor 78 can be used to adjust and maintain the brake system in time, so that the brake effect is always in the best state. The brake mechanism 7 is arranged in an annular and equidistant manner on the outer wall of the fixed plate 6, so that the braking force is uniformly distributed on the brake friction surface of the mounting disc 5, avoiding the problem of local rapid wear of the mounting disc 5 caused by uneven braking force, and prolonging the service life of the mounting disc 5. The brake disc 76 is preferably made of semi-metallic friction material, which has good wear resistance and a high friction coefficient, so that the brake disc 76 can generate strong and stable braking force when contacting the brake friction surface of the mounting disc 5, effectively ensuring the safety and reliability of the mine hoist during braking

[0046] It should be noted that the plurality of pressure sensors 78 are electrically connected to the external power supply through wires, and the plurality of pressure sensors 78 are electrically connected to the external PLC through wires.

[0047] In the present embodiment, the plurality of pressure sensors 78 are all prior art, and their structure and working principle are as known to those skilled in the art, which will not be described here.

[0048] In the specific use process of the present embodiment, when the mine hoist needs to be braked, the brake mechanism 7 is activated. The pressure sensor 78 in the brake mechanism 7 is started by the external PLC, and the hydraulic cylinder 71 in the brake mechanism 7 is actuated. The piston rod pushes the sleeve 72, the spring 73 and the brake disc 76 to move towards the mounting disc 5.

[0049] Since the surface of the mounting disc 5 away from the winding roller 4 is provided with a brake friction surface, the side surface of the brake disc 76 close to the winding roller 4 is in close contact with the brake friction surface of the mounting disc 5 on the same side. The brake disc 76 is made of semi-metallic friction material, and the friction force is generated when the two are in contact, thereby achieving the braking of the mounting disc 5. Since the rotating roller 3 is coaxially fixed with the mounting disc 5, and the winding roller 4 is coaxially fixed on the outer wall of the rotating roller 3, the braking of the mounting disc 5 can stop the rotating roller 3 and the winding roller 4 from rotating, thereby completing the braking of the mine hoist.

[0050] During braking, the spring 73 acts as a buffer to avoid damage to the device caused by excessive impact force during braking. The plug rod 75 is slidingly inserted into the sleeve 72, and the limiting strip 77 on the outer wall of the plug rod 75 is slidingly connected with the limiting groove in the inner wall of the sleeve 72, thereby ensuring the stability of the movement of the brake disc 76. At the same time, the pressure sensor 78 in the brake mechanism 7 can detect the oil pressure in the hydraulic cylinder 71 to monitor the braking condition, and also can control the braking force.

[0051] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-channel braking device for a mine hoist, comprising a mounting plate (1), two frames (2), a rotating roller (3), and a winding roller (4), characterized in that, The mounting plate (1) has a fixing plate (6) fixed on the top surface near the left and right ends. The two frames (2) are fixed on the top surface of the mounting plate (1) and located between the two fixing plates (6). The rotating roller (3) is rotatably connected between the two frames (2). The winding roller (4) is coaxially fixed on the outer wall of the circumference of the rotating roller (3). The mounting discs (5) are coaxially fixed on the left and right sides of the rotating roller (3). Several braking mechanisms (7) are provided between the fixing plate (6) and the mounting discs (5) on the same side. The braking mechanism (7) includes a hydraulic cylinder (71) with the cylinder body installed on the side surface of the fixing plate (6) near the winding roller (4), a sleeve (72) fixed on the side surface of the piston rod of the hydraulic cylinder (71) near the winding roller (4), a spring (73) with one end installed on the side surface of the sleeve (72) near the winding roller (4), and a brake disc (76) installed on the other end of the spring (73) for braking the mounting disc (5).

2. The multi-channel braking device for a mine hoist according to claim 1, characterized in that: The mounting plate (1) has a number of mounting holes on its top surface, and the mounting holes on the top surface of the mounting plate (1) are arranged in a matrix.

3. The multi-channel braking device for a mine hoist according to claim 1, characterized in that: The mounting plate (1) has a through groove on its top surface, and the through groove on the top surface of the mounting plate (1) corresponds to the position of the winding roller (4) and the size is compatible.

4. The multi-channel braking device for a mine hoist according to claim 1, characterized in that: The two frames (2) are located between two mounting discs (5), and the mounting discs (5) have a braking friction surface on the side surface away from the winding roller (4).

5. The multi-channel braking device for a mine hoist according to claim 1, characterized in that: The brake disc (76) is mounted on the end of the spring (73) on the same side near the winding roller (4) via a pad (74). The pad (74) has a plug rod (75) fixed on the side surface away from the mounting plate (5) on the same side, which is slidably inserted into the sleeve (72) on the same side. The spring (73) is movably sleeved on the outside of the plug rod (75) on the same side.

6. The multi-channel braking device for a mine hoist according to claim 5, characterized in that: The inner wall of the sleeve (72) is provided with two limiting grooves, and the outer wall of the insert rod (75) is fixed with two limiting strips (77) that are slidably connected to the limiting grooves on the inner wall of the sleeve (72) on the same side.

7. The multi-channel braking device for a mine hoist according to claim 6, characterized in that: The longitudinal cross-sectional shape of the upper limit groove on the inner wall of the sleeve (72) is I-shaped, and the shape of the limiting strip (77) is I-shaped to match the shape of the upper limit groove on the inner wall of the sleeve (72).

8. The multi-channel braking device for a mine hoist according to claim 5, characterized in that: The braking mechanism (7) also includes a pressure sensor (78) installed inside the cylinder body of the hydraulic cylinder (71) for detecting oil pressure. Several braking mechanisms (7) on the outer wall of the fixing plate (6) are arranged in a ring with equal spacing. The side surface of the brake disc (76) near the winding roller (4) is in close contact with the side surface of the mounting disc (5) away from the winding roller (4) on the same side. The brake disc (76) is made of a semi-metallic friction material or a ceramic friction material.

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