阅读说明：本技术 一种曳引机用制动器及其制作方法 (Brake for traction machine and manufacturing method thereof ) 是由 周卫 房文娜 曹宇 王志豪 王熙祯 陈兆琦 于 2021-09-29 设计创作，主要内容包括：一种曳引机用制动器及其制作方法,属于制动器制造技术领域。包括制动器部件,所述的制动器部件包括固定板、动铁芯,所述的固定块用于将制动器部件安装到曳引机上,所述的固定板与动铁芯之间设置有线圈组件、线圈铁芯、间隔铁芯,所述的线圈组件套设在线圈铁芯的外圈,所述的线圈组件具有两个或两个以上,所述线圈组件之间设有间隔铁芯,所述的线圈铁芯和间隔铁芯固定于固定板上,所述固定板和动铁芯之间的零部件被辅助装置包围起来,在所述辅助装置、间隔铁芯、线圈铁芯两两之间的空隙中浇注环氧树脂,从而将线圈组件浇固住。优点：充分利用了铁芯和树脂材料,解决了现有技术中静铁芯加工过程费时费力费铁芯材料的问题,提高生产效率。(A brake for a traction machine and a manufacturing method thereof belong to the technical field of brake manufacturing. Including the stopper part, the stopper part include the fixed plate, move the iron core, the fixed block be used for installing the tractor with the stopper part on, the fixed plate with move and be provided with coil pack, coil core, interval iron core between the iron core, coil pack cover establish the outer lane at coil core, coil pack have two or more, be equipped with the interval iron core between the coil pack, coil core and interval iron core be fixed in on the fixed plate, the fixed plate with move spare part between the iron core and surrounded by auxiliary device cast epoxy in auxiliary device, interval iron core, the two double-phase space of coil core to water the coil pack and fix. The advantages are that: the iron core and the resin material are fully utilized, the problem that the iron core material is wasted time and labor in the static iron core machining process in the prior art is solved, and the production efficiency is improved.)

1. A brake for a hoist, characterized in that: the brake component (1) comprises a brake component (1), the brake component (1) comprises a fixing plate (11) and a movable iron core (12), the fixing plate (11) is used for installing the brake component (1) on a tractor, a coil assembly (13), a coil iron core (131) and a spacing iron core (15) are arranged between the fixing plate (11) and the movable iron core (12), the coil assembly (13) is sleeved on the outer ring of the coil iron core (131), the coil assembly (13) is provided with two or more than two, the spacing iron core (15) is arranged between the coil assemblies (13), the coil iron core (131) and the spacing iron core (15) are fixed on the fixing plate (11), parts between the fixing plate (11) and the movable iron core (12) are surrounded by an auxiliary device, and epoxy resin is poured into gaps between the auxiliary device, the spacing iron core (15) and the coil iron core (131), thereby fixing the coil assembly (13) by casting.

2. The brake for a hoisting machine according to claim 1, characterized in that: the auxiliary device is fixed on the fixing plate (11) and/or the spacing iron core (15).

3. The brake for a hoisting machine according to claim 1, characterized in that: the brake component (1) further comprises a brake spring (14), one end of the brake spring (14) abuts against the fixed plate (11) or the coil iron core (131) or the spacing iron core (15), the other end of the brake spring (14) abuts against the movable iron core (12), and the brake spring (14) is installed in a spring guide device in the coil iron core (131) and/or a spring guide device in the spacing iron core (15) and/or is additionally installed in a spring guide device on the fixed plate (11).

4. The brake for a hoisting machine according to claim 3, characterized in that: when the brake spring (14) is installed in a spring guide device additionally arranged on the fixing plate (11), the spring guide device is a spring guide sleeve (141), a cylinder counter bore (142) is processed on the fixing plate (11), and the spring guide sleeve (141) is embedded in the cylinder counter bore (142).

5. The brake for a hoisting machine according to claim 4, characterized in that: the spring guide device is also surrounded by the auxiliary device, and epoxy resin is poured into the gaps between the auxiliary device, the coil iron core (131), the spacing iron core (15) and the spring guide device, so that the coil assembly (13) is poured and fixed.

6. The brake for a hoisting machine according to claim 1, characterized in that: the auxiliary device is a dust guard (16), and the dust guard (16) is a rectangular frame body (161) formed by bending; or the dust guard (16) is formed by symmetrically installing two rectangular opening frames (163) with one ends opened, and two opened end parts of the rectangular opening frames (163) extend to two ends of the spacing iron core (15); or, on the basis of the rectangular opening frame (163), the edge frame of the end part along the length direction of the brake component (1) is inwards concave towards the space between the two brake springs (14), and two concave-convex opening frames (164) with a concave-convex structure which are symmetrically arranged are formed.

7. The brake for a hoisting machine according to claim 1, characterized in that: and a brake disc (2) is installed on a main shaft of the traction machine, one side of the brake disc (2) is right opposite to the shell (3) of the traction machine, and the other side of the brake disc is right opposite to the movable iron cores (12) of the two groups of brake parts (1).

8. The brake for a hoisting machine according to claim 7, characterized in that: both ends protrusion in dust guard (16) of fixed plate (11) length direction, fixed plate (11) protrusion is fixed part (111) of stopper part (1) at the both ends of dust guard (16), the protruding installation boss (31) that is equipped with in one end both sides of the installation stopper of hauler, installation boss (31) extend away and cooperate the installation with fixed part (111) of fixed plate (11).

9. The brake for a hoisting machine according to claim 1, characterized in that: the traction machine is provided with a brake wheel (60), two groups of brake components (1) are respectively arranged on two radial sides of the brake wheel (60), and a friction assembly (50) for contracting the brake wheel (60) during braking is arranged on a movable iron core (12) of each brake component (1).

10. A manufacturing method of a brake for a traction machine is characterized by comprising the following steps: the method for manufacturing the brake component (1) comprises the following steps: firstly, a spring guide device, a spacing iron core (15), a coil iron core (131), a coil assembly (13) and an auxiliary device are assembled on a fixing plate (11); then pouring epoxy resin into gaps between the auxiliary device, the coil iron core (131), the spacing iron core (15) and the spring guide device, so as to fixedly pour the coil assembly (13); after the epoxy resin is cooled and shaped, the auxiliary device is removed, or after the auxiliary device used in casting is removed, the auxiliary device with the protection function is installed; finally, other parts of the brake part (1) are installed.

Technical Field

The invention belongs to the technical field of manufacturing of a tractor brake, and particularly relates to a brake for a tractor and a manufacturing method thereof.

Background

An elevator is an indispensable vertical transportation means of a high-rise building, and an elevator driving main machine, i.e., a traction machine, is power equipment of the elevator, and generally comprises a traction sheave, a traction machine main shaft provided with the traction sheave, a motor, a brake and the like. The brake is an important safety component on the tractor, and the existing brake for the tractor comprises a drum brake, a disc brake, a block brake and the like, wherein the disc brake is the disc brake introduced by the 'disc brake for the tractor' disclosed in the Chinese patent publication No. CN 202107476U; the block brake, like the block brake related in a "block brake release device of block brake" disclosed in chinese patent of invention grant publication No. CN203295104U, both brakes include a movable iron core, a static iron core for installing a coil assembly and a brake spring, when the coil assembly is energized, the movable iron core and the static iron core overcome the elasticity of the brake spring due to the electromagnetic attraction, so as to realize the mutual attraction between the movable iron core and the static iron core, release the traction machine, and enable the traction machine to normally operate; when the coil assembly is powered off, the movable iron core and the static iron core lose electromagnetic attraction, and the movable iron core pushes the friction assembly to stop the tractor under the elastic force action of the brake spring. The static iron cores of the two brakes are processed into coil slots for installing the coil assemblies and spring mounting holes for installing the brake springs, the processing process is time-consuming and labor-consuming, and the utilization rate of iron core materials is low.

In view of the above-mentioned prior art, there is a need for a reasonable improvement in the structure of the conventional brake for a traction machine and the manufacturing method thereof. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.

Disclosure of Invention

The invention aims to provide a brake for a traction machine and a manufacturing method thereof, which change the installation mode of a coil assembly and a brake spring in the prior art, are simpler and more convenient compared with the prior manufacturing method, fully utilize an iron core material and a resin material, improve the production efficiency and reduce the manufacturing cost.

The invention provides a brake for a tractor, which comprises a brake component, wherein the brake component comprises a fixed plate and a movable iron core, the fixed plate is used for installing the brake component on the tractor, a coil assembly, a coil iron core and a spacing iron core are arranged between the fixed plate and the movable iron core, the coil assembly is sleeved on the outer ring of the coil iron core, the coil assembly comprises two or more than two coil assemblies, the spacing iron core is arranged between the coil assemblies, the coil iron core and the spacing iron core are fixed on the fixed plate, parts between the fixed plate and the movable iron core are surrounded by an auxiliary device, and epoxy resin is poured into gaps between every two of the auxiliary device, the spacing iron core and the coil iron core, so that the coil assemblies are poured and fixed.

In a specific embodiment of the present invention, the auxiliary device is fixed to the fixing plate and/or the spacer.

In another specific embodiment of the present invention, the brake component further comprises a brake spring, one end of the brake spring abuts against the fixed plate or the coil core or the spacing core, and the other end of the brake spring abuts against the movable core, and the brake spring is installed in a spring guide device in the coil core and/or a spring guide device in the spacing core and/or is additionally installed in a spring guide device on the fixed plate.

In another specific embodiment of the present invention, when the brake spring is installed in a spring guide device additionally disposed on the fixing plate, the spring guide device is a spring guide sleeve, a cylinder counter bore is processed on the fixing plate, and the spring guide sleeve is embedded in the cylinder counter bore.

In a further embodiment of the invention, the spring guide is also surrounded by an auxiliary device, and epoxy resin is poured into the gap between the auxiliary device, the coil core, the spacer core and the spring guide, thereby fixing the coil assembly.

In yet another specific embodiment of the present invention, the auxiliary device is a dust guard, and the dust guard is a rectangular frame body formed by bending; or the dust guard is formed by symmetrically installing two rectangular opening frames with one ends opened, and two ends of the opening of each rectangular opening frame extend to two ends of the spacing iron core; or, the rectangular opening frame is provided with an inward concave part between the two brake springs along the end frame of the brake part in the length direction, and two concave-convex opening frames with symmetrically arranged concave-convex structures are formed.

In a further specific embodiment of the present invention, a brake disc is mounted on the main shaft of the hoisting machine, and one side of the brake disc corresponds to the casing of the hoisting machine and the other side corresponds to the movable iron cores of the two sets of brake components.

In a more specific embodiment of the present invention, two ends of the fixing plate in the length direction protrude from the dust-proof plate, two ends of the fixing plate protruding from the dust-proof plate are fixing portions of the brake component, and two sides of one end of the traction machine where the brake is installed are protruded with installation bosses which extend out to be installed in cooperation with the fixing portions of the fixing plate.

In yet another specific embodiment of the present invention, a brake wheel is mounted on the hoisting machine, two sets of the brake components are respectively mounted on two radial sides of the brake wheel, and a friction assembly for contracting the brake wheel during braking is mounted on a movable iron core of the brake component.

Another object of the present invention is to provide a method for manufacturing a brake for a traction machine, which includes the steps of: firstly, assembling a spring guide device, a spacing iron core, a coil assembly and an auxiliary device on a fixing plate; then pouring epoxy resin into gaps between the auxiliary device, the coil iron core, the spacing iron core and the spring guide device, so as to fixedly pour the coil assembly; after the epoxy resin is cooled and shaped, the auxiliary device is removed, or after the auxiliary device used in casting is removed, the auxiliary device with the protection function is installed; finally, other parts of the brake part are installed.

Due to the adoption of the structure, the invention has the beneficial effects that: firstly, the technical scheme adopts a mode of pouring epoxy resin paint after assembly to manufacture a fixed plate assembly consisting of a fixed plate, an interval iron core, a coil assembly, a spring guide sleeve and epoxy resin for pouring and fixing the coil assembly, and then other brake parts such as a brake spring, a damping device, a movable iron core, a brake release device and the like are installed, the manufacture of the fixed plate assembly makes full use of the iron core and resin materials, the problem that the time and labor are wasted and the iron core materials are wasted in the static iron core processing process in the prior art is solved, the production efficiency is improved, and the manufacturing cost is reduced; and secondly, the cooled epoxy resin forms an integral structure, so that parts are reduced, the functions of heat dissipation, shock absorption and noise reduction are achieved, the performance of the brake is greatly improved, and the service life of the brake is greatly prolonged.

Drawings

Fig. 1 is an installation front view of an embodiment of a brake for a hoist according to the present invention.

Fig. 2 is an installation perspective view of an embodiment of the brake for a hoist according to the present invention.

Fig. 3 is a perspective view of a brake component in an embodiment of the brake for a traction machine according to the present invention.

Fig. 4 is a sectional view of a brake part according to an embodiment of the brake for a traction machine of the present invention.

Fig. 5 is a schematic view of a brake component without a movable iron core in an embodiment of the brake for a traction machine according to the present invention.

Fig. 6 is a schematic view of a brake component equipped with a rectangular frame in an embodiment of the brake for a traction machine according to the present invention.

Fig. 7 is a schematic view of a brake component equipped with a rectangular opening frame in an embodiment of the brake for a traction machine according to the present invention.

Fig. 8 is a schematic view of a fixing plate assembly before epoxy resin paint is applied to an embodiment of a brake for a traction machine according to the present invention.

Fig. 9 is a schematic view of a fixing plate assembly after epoxy resin paint is applied to an embodiment of the brake for a traction machine according to the present invention.

Fig. 10 is a schematic view of a fixing plate assembly with a dust-proof plate removed after epoxy resin is poured in one embodiment of the brake for a traction machine according to the present invention.

Fig. 11 is a schematic view showing the installation of another embodiment of the brake for a hoist according to the present invention.

Fig. 12 is a sectional view of a brake part in another embodiment of the brake for a traction machine according to the present invention.

In the figure: 1. the brake comprises a brake component, 11, a fixing plate, 111, a fixing part, 112, a fixing plate groove, 113, an adjusting gasket, 12, a movable iron core, 121, a sinking groove, 122, a stepped hole, 13, a coil assembly, 131, a coil iron core, 1311, a spring guide hole I, 1312, a rod counter bore, 14, a brake spring, 141, a spring guide sleeve, 142, a cylinder counter bore, 15, a spacing iron core, 151, a spring guide hole II, 16, a dust guard, 161, a rectangular frame body, 162, a fastening screw, 163, a rectangular opening frame, 164, a concave-convex opening frame, 17, a guide rod, 171, a sliding bearing, 18, a damping device, 181, a damping pad, 182, a gasket, 19, a brake release device, 191, a brake release screw, 192, a compression spring, 193, a brake release handle, 193194, a steel ball, 195, a slotted nut, 196 and a split pin; 2. the brake comprises a brake disc, 21, a friction framework, 22, a first brake shoe I; 3. a machine shell and 31. a boss is arranged; 10. a double-headed screw; 20. locking the nut; 30. a detection device; 40. encoder part, 41, encoder, 42, encoder cover, 421, lug; 50. the friction assembly 51, the second brake shoe II and 52, the fixed frame; 60. and a brake wheel.

Detailed Description

The following detailed description of the embodiments of the present invention will be described with reference to the accompanying drawings, but the description of the embodiments is not intended to limit the technical solutions, and any changes in form and not essential to the inventive concept should be regarded as the protection scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the positions shown in the corresponding drawings, and thus, should not be construed as particularly limiting the technical solution provided by the present invention.

Example 1

Referring to fig. 1 and 2, the present invention relates to a brake for a traction machine, the traction machine includes a brake disc 2, the brake disc 2 is mounted on a main shaft of the traction machine through a spline connection, and when the brake is not braked, the brake disc 2 can rotate along with the main shaft of the traction machine. Brake disc 2 include friction skeleton 21 and be located the first brake shoe I22 on the disk face of friction skeleton 21 both sides, the first brake shoe I22 of 2 one sides of brake disc is just corresponding the casing 3 of hauler, the first brake shoe I22 of 2 opposite sides of brake disc is just corresponding two sets of brake parts 1.

As shown in fig. 3 to 5, each set of the brake component 1 includes a fixed plate assembly and a movable iron core 12, the fixed plate assembly includes a fixed plate 11, and the fixed plate 11 is a rectangular parallelepiped. A movable iron core 12, a coil assembly 13, a brake spring 14 and the like are arranged between the fixed plate 11 and the brake disc 2, one surface of the movable iron core 12 is opposite to the brake disc 2, and the coil assembly 13, the coil iron core 131, the brake spring 14 and the like are arranged between the other surface of the movable iron core 12 and the fixed plate 11. The coil assembly 13 is sleeved on the outer ring of the coil iron core 131. When coil pack 13 have two or more, be equipped with interval iron core 15 between the coil pack 13, coil core 131 and interval iron core 15 be fixed in on fixed plate 11, in this embodiment, coil core 131 and interval iron core 15 all be fixed in on fixed plate 11 through the fastener. The coil assemblies 13 are preferably two sets, the two sets of coil assemblies 13 are respectively located at the upper and lower parts of the fixing plate 11, and a spacing iron core 15 is arranged between the two sets of coil assemblies 13. The shape of the coil assembly 13 is circular, racetrack, etc., and the shape of the coil core 131 inside the coil assembly 13 is not limited as long as the coil assembly 13 can be sleeved outside the coil core 131, and in this embodiment, the shape of the coil core 131 is consistent with the shape of the inner ring of the coil assembly 13.

As shown in fig. 4 and 5, the braking spring 14 is installed outside all coil assemblies 13 and/or in the space core 15 between the adjacent coil assemblies 13 and/or in the coil core 131 in the coil assembly 13. When the brake spring 14 is installed inside the coil assembly 13, the first spring guide hole 1311 for installing the brake spring 14 is formed in the coil core 131, and the first spring guide hole 1311 is a blind hole or a through hole, so that when the brake spring 14 is installed in the first spring guide hole 1311, one end of the brake spring abuts against the fixed plate 11 or the coil core 131, and the other end of the brake spring abuts against the movable core 12. When the brake spring 14 is installed between the adjacent coil assemblies 13, the second spring guide hole 151 for installing the brake spring 14 is formed in the spaced iron core 15, the second spring guide hole 151 is a blind hole, a stepped hole or a through hole, when the brake spring 14 is installed in the second spring guide hole 151, one end of the brake spring abuts against the fixed plate 11 or the spaced iron core 15, and the other end of the brake spring abuts against the movable iron core 12. When the braking springs 14 are disposed outside all the coil assemblies 13, that is, the two end portions of the fixed plate 11 are provided with the spring guide sleeves 141, the braking springs 14 are disposed in the spring guide sleeves 141, one end of each braking spring 14 abuts against the fixed plate 11, and the other end abuts against the movable iron core 12. In order to better position the spring guide 141, a cartridge counterbore 142 is machined into the mounting plate 11, said spring guide 141 being inserted into the cartridge counterbore 142. The first spring guide hole 1311, the second spring guide hole 151 and the spring guide sleeve 141 are collectively referred to as a spring guide, that is, a spring guide for installing the braking spring 14 and guiding the operation thereof is provided on the fixed plate assembly.

As shown in fig. 4, 5 and 9, the coil assembly 13 is cast between the coil core 131 and the spacer core 15 by epoxy resin. Therefore, the fixing plate assembly is mainly composed of the fixing plate 11, the coil assembly 13, the coil core 131, the spacer core 15, and epoxy resin for fixing the coil assembly 13. In this embodiment, the spring guide bushes 141 are provided at both ends of the fixing plate 11, and epoxy resin is poured around the spring guide bushes 141 to stabilize the operation of the brake spring 14, so the fixing plate assembly in this embodiment further includes the spring guide bushes 141. Here, since the brake spring 14 is installed in the spring guide sleeve 141, the first spring guide hole 1311 and the second spring guide hole 151, epoxy resin does not need to be poured into all the three; and the casting thickness of the epoxy resin is required to be not higher than the thicknesses of the coil core 131, the spacer core 15 and the spring guide bush 141.

In order to assist the brake component 1 to pour epoxy resin, the parts such as the spring guide sleeve 141, the brake spring 14, the coil assembly 13, the spacing iron core 15 and the like between the fixed plate 11 and the movable iron core 12 are enclosed by an auxiliary device, the epoxy resin is poured in the range enclosed by the auxiliary device, and whether the auxiliary device is removed or not is determined according to the situation after the pouring is finished and the cooling is finished. In this embodiment, the auxiliary device is a dust guard 16, and the dust guard 16 is fixed on the fixing plate 11 and/or the spacer core 15. Epoxy resin is poured into gaps between the dust guard 16, the coil core 131, the spacing core 15 and the spring guide sleeve 141, and finally the coil assembly 13 is poured and fixed.

The dust-proof plate 16 may be a rectangular frame 161 formed by bending one piece, and is fixed to both side surfaces of the fixing plate 11 in the width direction by a plurality of fastening screws 162, as shown in fig. 6. The dust-proof plate 16 may be formed by symmetrically installing two rectangular opening frames 163 having one opening, both ends of the opening of the rectangular opening frames 163 extend to both ends of the spacer core 15, and each of the rectangular opening frames 163 is also fixed to both sides of the fixed plate 11 in the width direction by a plurality of fastening screws 162, as shown in fig. 7. In this embodiment, in order to reduce the epoxy resin pouring, two concave-convex opening frames 164 are formed in a concave-convex structure symmetrically disposed along the end frame in the longitudinal direction of the brake member 1 between the two brake springs 14 in addition to the rectangular opening frame 163, as shown in fig. 5. Here, the dust-proof plate 16 is only fixed on the fixing plate 11, and of course, the dust-proof plate 16 may also be fixed on the fixing plate 11 and the spacer core 15 at the same time, or the dust-proof plate 16 is only fixed on the spacer core 15, which is not described herein again.

The spring guide sleeve 141, the spacer core 15, the coil core 131, the coil assembly 13 and the dust-proof plate 16 are assembled on the fixing plate 11, as shown in fig. 8; epoxy resin is poured into the gaps between the dust-proof plate 16, the coil core 131, the spacer core 15 and the spring guide sleeve 141, so that the coil assembly 13 is fixedly poured, as shown in fig. 9. After the epoxy resin is cooled and shaped, whether the dust-proof plate 16 is removed or not is determined according to the situation, and the fixing plate assembly obtained after the dust-proof plate 16 is removed is shown in fig. 10, but the dust-proof plate 16 used in casting is removed, and a similar dust-proof plate 16 with a protection function can be installed subsequently to play a protection role for the brake. Finally the other parts of the brake part 1 are mounted.

As shown in fig. 4 and 5, when the coil assembly 13 of the brake is energized, an electromagnetic attraction force is generated, so as to attract the plunger 12; when the coil assembly 13 loses the electromagnetic attraction force when the power is turned off, the brake spring 14 pushes the plunger 12 toward the brake disc 2, thereby braking the traction machine. In order to provide a guiding function for the movable iron core 12, a guiding rod 17 is fixed on the coil iron core 131 or the spacing iron core 15, and the movable iron core 12 is slidably arranged on the guiding rod 17. In this embodiment, one end of the guide rod 17 is inserted into the rod counterbore 1312 of the coil core 131, a threaded hole is processed at one end of the guide rod 17 inserted into the rod counterbore 1312, and a bolt is screwed into the threaded hole of the guide rod 17 after passing through the fixing plate 11 and the coil core 131, so as to fix the guide rod 17. The other end of the guide rod 17 extends into the corresponding through hole of the movable iron core 12. The part of the guide rod 17 extending into the movable iron core 12 is sleeved with a sliding bearing 171 for facilitating the movement of the movable iron core 12.

As shown in fig. 4, the brake component 1 further includes a damping device 18, in this embodiment, the damping device 18 includes a damping pad 181 and a washer 182, the damping pad 181 and the washer 182 are installed in a counter sink 121 of the movable iron core 12, a stud 10 is screwed into a threaded hole on the fixed plate 11, then passes through the braking spring 14, and finally abuts against the washer 182, and the other end of the stud 10 located outside the fixed plate 11 is locked by a locking nut 20. Here, the damper 18 is installed to face the brake spring 14, and the damper may be installed between the coil core 131 and the movable core 12 or between the spacer 15 and the movable core 12.

When the damping device is installed between the coil core 131 and the movable core 12, the damping pad 181 and the spacer 182 are installed in the sinking groove 121 of the movable core 12 or the sinking groove processed on the coil core 131, and the stud screw 10 is screwed into the threaded hole on the fixing plate 11, then passes through the coil core 131, and finally abuts against the spacer 182. When the damping device is installed between the spacer core 15 and the movable core 12, the damping pad 181 and the spacer 182 are installed in the sinking groove 121 of the movable core 12 or the sinking groove processed on the spacer core 15, and after the stud screw 10 is screwed into the threaded hole on the fixing plate 11, the stud screw passes through the spacer core 15 and finally abuts against the spacer 182.

As shown in fig. 4, each brake component 1 includes a brake release device 19, the brake release device 19 is installed in the middle of the brake component 1, and specifically includes a brake release screw 191, a pressure spring 192, a brake release handle 193, a steel ball 194, a slotted nut 195 and a cotter pin 196, a stepped hole 122 whose aperture gradually decreases toward the direction of the fixed plate 11 is opened in the middle of the movable iron core 12, and since the brake spring 14 is installed in the middle of the spacing iron core 15 in this embodiment, the stepped hole 122 on the movable iron core 12 faces the brake spring 14 in the middle of the spacing iron core 15. The brake releasing screw 191 sequentially passes through the pressure spring 192, the stepped hole 122 on the movable iron core 12, the braking spring 14, the through hole on the fixed plate 11 and the through hole at one end of the brake releasing handle 193, and is locked by the slotted nut 195 and the split pin 196. The head of the trip screw 191 sinks into the stepped hole 122, and one end of the compression spring 192 presses against the head of the trip screw 191, and the other end presses against a stepped surface of the stepped hole 122. The fixing plate 11 is processed with a fixing plate groove 112 around the periphery of the through hole through which the trip screw 191 passes, the trip handle 193 is processed with a handle groove 1931 around the periphery of the through hole through which the trip screw 191 passes, and the steel ball 194 is locked and installed in the space formed by the handle groove 1931 and the fixing plate groove 112.

As shown in fig. 2 and 3, a detection device 30 is mounted on the outer side surface of each brake component 1, and the detection device 30 is used for detecting the state of the movable iron core 12 to determine whether the brake is operated in a braking state or a releasing state.

As shown in fig. 2 to 5, the width of the movable iron core 12 is the same as the width of the fixed plate 11, the length of the movable iron core extends to the inner wall of the dust-proof plate 16, and the dust-proof plate 16 extends to the side surface of the movable iron core 12, so as to better protect the components between the movable iron core 12 and the fixed plate 11. The two ends of the fixing plate 11 in the length direction protrude out of the dust-proof plate 16, and the protruding part is used for fixing and installing with the machine case 3 of the traction machine, that is, the two ends of the fixing plate 11 protruding out of the dust-proof plate 16 are fixing parts 111 of the brake component 1. The two sides of one end of the tractor for installing the brake are convexly provided with installation bosses 31, the installation bosses 31 extend out to be matched with the fixing parts 111 of the fixing plates 11 for installation, the fixing bolts penetrate through holes in the fixing parts 111 and then are screwed into the installation bosses 31, the brake is installed on the tractor, and the brake disc 2, the movable iron core 12 and parts between the movable iron core 12 and the fixing plates 11 are located between the installation bosses 31 on the two sides. An adjusting gasket 113 is arranged between the fixing part 111 and the mounting boss 31 and is used for adjusting the working gap a between the movable iron core 12 and the fixing plate component. The adjusting gasket 113 is rectangular, and an opening hole for clamping the fixing bolt is formed in the adjusting gasket.

As shown in fig. 1 and 2, when the two sets of brake members 1 are attached to the casing 3 of the hoisting machine, an encoder member 40 for detecting the operating condition of the hoisting machine is attached between the two sets of brake members. Specifically, the encoder component 40 includes an encoder 41 and an encoder cover 42, the encoder 41 is fixedly connected with a main shaft of the hoisting machine, and a lug 421 fixedly connected with the fixing plates 11 on both sides is convexly arranged on the encoder cover 42.

With reference to fig. 1, fig. 2, and fig. 4, the working process of the brake for a hoisting machine according to the embodiment is as follows: when the coil assembly 13 of the brake component 1 is electrified, a magnetic loop is formed among the fixed plate assembly, the movable iron core 12 and the working gap A between the fixed plate assembly and the movable iron core 12, electromagnetic force is generated, the fixed plate assembly and the movable iron core 12 are mutually attracted, the movable iron core 12 is separated from the brake disc 2, and the brake disc 2 freely rotates along with the main shaft of the traction machine under the effect of spline connection. If the elevator stops running, the brake is needed to stop the brake disc 2, the brake needs to be powered off, after the coil assembly 13 is powered off, the electromagnetic force between the fixed plate assembly and the movable iron core 12 is lost, the movable iron core 12 is far away from the fixed plate assembly under the action of the brake spring 14, the brake disc 2 is pressed against the shell 3 of the tractor, the brake disc 2 cannot rotate, the main shaft of the tractor is stopped, and the elevator stops running.

Example 2

As shown in fig. 11 and 12, the present embodiment is different from embodiment 1 in that: the two groups of brake components 1 are respectively arranged on two radial sides of a brake wheel 60 of the tractor, and the brake wheel 60 is clasped during braking. Specifically, a friction assembly 50 for braking the brake wheel 60 is installed on the other side surface of the movable iron core 12, the friction assembly 50 comprises a second brake shoe II 51 for performing friction braking with the brake wheel 60 during braking and a fixing frame 52 for fixing the second brake shoe II 51, and the fixing frame 52 is fixedly installed on the movable iron core 12. Other components and structures thereof are the same as those of embodiment 1.

With reference to fig. 11 and 12, the working process of the brake for a hoisting machine according to the present embodiment is as follows: when the coil assembly 13 of the brake component 1 is energized, a magnetic circuit is formed between the fixed plate assembly, the movable iron core 12 and the working gap a therebetween, electromagnetic force is generated, the fixed plate assembly and the movable iron core 12 are attracted to each other, the movable iron core 12 drives the friction assembly 50 to separate from the brake wheel 60, and the brake wheel 60 can rotate freely. If the elevator is stopped, the brake is needed to brake the brake wheel 60, the brake is powered off, after the coil assembly 13 is powered off, the electromagnetic force between the fixed plate assembly and the movable iron core 12 is lost, the movable iron core 12 is far away from the fixed plate assembly under the action of the brake spring 14, the friction assembly 50 is pressed against the brake wheel 60, friction braking force is generated between the brake wheel 60 and the brake wheel, and therefore the brake wheel 60 is braked, and the elevator stops running.

In summary, the innovation of the invention is as follows: the coil core 131 and the spacer core 15 are one or more independent components, and are manufactured separately from the fixing plate 11 and mounted on the fixing plate 11, so that the mounting position of the coil assembly 13 is provided, a coil slot does not need to be formed in the whole iron core, and the processing procedure is greatly simplified. The coil assembly 13 is poured and fixed by epoxy resin, and the formed epoxy resin is integrally arranged between the fixed plate 11 and the movable iron core 12, so that the number of parts is reduced, and the functions of heat dissipation, shock absorption and noise reduction are achieved.