Double-side broken line protector

Abstract

The invention discloses a double-side broken line protector. The double-side broken line protector comprises two sub broken line protectors and a base assembly, the two sub-broken line protectors are arranged on the two sides of the base assembly in a mirror image mode, and the two sub-broken line protectors are fixed through the base assembly. And the sub broken wire protector comprises a speed measuring device for measuring the descending speed of the steel wire and outputting an abnormal speed signal after the wire is broken, a clamping device for clamping the steel wire after receiving the abnormal speed signal, and a battery for supplying power to the testing device and the clamping device. According to the double-side broken wire protector, double protection is conducted on a steel wire rope, the steel wire breakage protection effect is greatly improved, the sensitivity of the protector to steel wire breakage is high, and the possibility of protection failure is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of rope break protection, and particularly relates to a bilateral wire break protector. Background Art

[0002] Chinese Patent: ZL200820096584.7 relates to a wire rope protector. A brake block and a compression screw are installed on a tapered shaft above the main shaft. A saddle sleeve is installed on a sleeve through a connecting screw. The sleeve is connected to a fixed bushing. A flyweight is installed on a bracket. The bracket is fixed on a movable bushing. The movable bushing is connected to the main shaft through a key and is inserted into an annular groove of the fixed bushing. Steel balls are installed on a semi-circular groove below the main shaft. When the wire rope suddenly breaks, causing the lifting appliance to fall out of control, an additional angular velocity is given to the rotating flyweight, increasing the centrifugal force of the flyweight, causing an upward axial movement of the movable bushing. The steel balls move backward along the channel, releasing the constraint between the main shaft and the fixed bushing, and moving upward to cooperate with the saddle sleeve. The brake blocks on three equally spaced pressing blocks on the tapered shaft contract towards the axis, clamping the wire rope, which can prevent the lifting appliance from falling, and is applicable to industries such as construction, coal mines, and metallurgy.

[0003] The moving parts involved in the above wire rope protector during the implementation of its function include a flyweight, a movable bushing, steel balls, and brake blocks. The cooperation of these moving parts can ensure wire break protection. However, when the relative movement speed of the wire rope with respect to the wire break protector is relatively fast, or when one or more of these parts do not move as required after the wire break, it is possible that the protection will fail. Summary of the Invention

[0004] The purpose of the present invention is to provide a bilateral wire break protector, which provides double protection for the wire rope, greatly improves the effect of wire break protection, and has a high sensitivity to wire breaks, reducing the possibility of protection failure.

[0005] To achieve the above purpose, the technical solution of the present invention is to design a bilateral wire break protector, including two sub-wire break protectors and a base assembly; the two sub-wire break protectors are mirror-symmetrically arranged on both sides of the base assembly and are fixed by the base assembly; each sub-wire break protector includes a speed measuring device for measuring the descending speed of the wire rope and outputting an abnormal speed signal after the wire break, a clamping device for clamping the wire rope after receiving the abnormal speed signal, and a battery for supplying power to the testing device and the clamping device.

[0006] Further, the speed measurement device includes a test device housing, an encoder, an auxiliary wheel, a shaft seat, and a speed measurement wheel; the encoder is fixed on the test device housing; the steel wire vertically passes through the inside of the test device housing; a speed measurement wheel and an auxiliary wheel are arranged in parallel inside the test device housing, and the wheel surfaces of the speed measurement wheel and the auxiliary wheel roll on the surface of the steel wire; shaft seats are provided at both ends of the middle shaft of the auxiliary wheel, a shaft seat is provided at one end of the speed measurement wheel, and the other end is connected to the encoder; the shaft seats are fixed on the inner wall of the test device housing.

[0007] Further, the clamping device includes a clamping device housing, a claw cylinder, an electromagnet, a baffle, a slider, a push plate, and a lower end cover; a claw cylinder chute for placing the claw cylinder is provided inside the clamping device housing; the upper part of the claw cylinder is a claw lobe, and the lower part of the claw cylinder is a cylinder body. After the steel wire enters the clamping device housing, it passes through the cylinder body of the claw cylinder; the upper part of the claw cylinder chute is wide for placing the claw lobe in a relaxed state, and the lower part of the claw cylinder chute is narrow for placing the cylinder body; symmetrically distributed baffles are provided on the inner walls of both sides of the claw cylinder chute of the clamping device housing; a slider that can slide relative to the side surface of the baffle is provided on the side wall of the cylinder body of the claw cylinder; a push plate is provided at the lower part of the cylinder body of the claw cylinder; a fixed end of the electromagnet is provided on the inner wall of the clamping device housing, and the movable end push rod of the electromagnet is connected to the push plate; a lower end cover for closing the lower part of the clamping device housing is provided at the lower part of the clamping device housing.

[0008] Further, it includes a protective cover that covers the upper part of the test device housing of the speed measurement device; the lower part of the test device housing is connected to the upper part of the clamping device housing.

[0009] Further, the base assembly is composed of a first base and a second base. Grooves are provided on the splicing end surfaces of the first base and the second base for embedding the lower parts of the clamping device housings of the upper and lower sub-wire break protectors. Steps are provided in the grooves on the splicing end surfaces of the first base and the second base, and the lower parts of the clamping device housings of the upper and lower sub-wire break protectors are fixed on the steps by screws; the splicing end surfaces of the first base and the second base are fastened by bolt connection; the rear end of the first base is connected to a fixing plate by a bolt, and the fixing plate is fixed together with the cross beam to which the tower crane pulley is fixed.

[0010] Further, the protective cover, the test device housing, and the clamping device housing are all composed of two sub-components spliced together on the left and right, and the two sub-components on the left and right are fixedly connected by screws.

[0011] Further, guide posts and guide grooves are respectively provided on the splicing end surfaces of the two sub-components on the left and right.

[0012] The advantages and beneficial effects of the present invention are as follows: The double-sided wire break protector of the present invention provides double protection for the steel wire rope, greatly improving the effect of steel wire break protection, and the protector is highly sensitive to steel wire breakage, reducing the possibility of protection failure. Description of the Drawings

[0013] Figure 1This is a schematic structural diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of partial disassembly of the present invention.

[0015] Figure 3 This is an exploded view of the sub-wire break protector.

[0016] Figure 4 This is a schematic structural diagram of the claw cylinder, slider and baffle.

[0017] Figure 5 This is a top view schematic diagram of the sub-wire break protector.

[0018] Figure 6 This is a schematic diagram of section A-A.

[0019] Figure 7 This is a schematic diagram of section B-B.

[0020] Among them, the protective cover 1, speed measuring device 2, test device housing 2-1, encoder 2-2, auxiliary wheel 2-3, shaft seat 2-4, speed measuring wheel 2-5, clamping device 3, clamping device housing 3-1, claw cylinder 3-2, electromagnet 3-3, baffle 3-4, slider 3-5, push plate 3-6, lower end cover 3-7, battery 4, base assembly 5, first base 5-1, second base 5-2, steel wire 6. Specific embodiments

[0021] The following combines the drawings and embodiments to further describe the specific embodiments of the present invention. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention. Embodiment

[0022] As Figures 1 to 7 shown, a bilateral wire break protector includes two sub-wire break protectors and a base assembly 5; the two sub-wire break protectors are mirror-symmetrically arranged on both sides of the base assembly 5 and are fixed by the base assembly 5.

[0023] The sub-wire break protector includes a protective cover 1, a speed measuring device 2, a clamping device 3 and a battery 4; The protective cover 1 is provided with a through hole for the steel wire 6 to pass through; The speed measurement device 2 includes a test device housing 2-1, an encoder 2-2, an auxiliary wheel 2-3, a shaft seat 2-4, and a speed measurement wheel 2-5; the encoder 2-2 is fixed on the test device housing 2-1; the steel wire 6 vertically passes through the inside of the test device housing 2-1, and a speed measurement wheel 2-5 and an auxiliary wheel 2-3 are arranged in parallel inside the test device housing 2-1, and the wheel surfaces of the speed measurement wheel 2-5 and the auxiliary wheel 2-3 roll on the surface of the steel wire 6; shaft seats 2-4 are provided at both ends of the middle shaft of the auxiliary wheel 2-3, a shaft seat 2-4 is provided at one end of the speed measurement wheel 2-5, and the other end is connected to the encoder 2-2; the shaft seats 2-4 are fixed on the inner wall of the test device housing 2-1.

[0024] The clamping device 3 includes a clamping device housing 3-1, a claw cylinder 3-2, an electromagnet 3-3, a baffle 3-4, a slider 3-5, a push plate 3-6, and a lower end cover 3-7; a claw cylinder chute for placing the claw cylinder 3-2 is provided inside the clamping device housing 3-1; the upper part of the claw cylinder 3-2 is a claw lobe, and the lower part is a cylinder body. After the steel wire 6 enters the clamping device housing 3-1, it passes through the cylinder body of the claw cylinder 3-2; the upper part of the claw cylinder chute is wide for placing the claw lobe in a relaxed state, and the lower part is narrow for placing the cylinder body. Symmetrically distributed baffles 3-4 are provided on the inner walls of the clamping device housing 3-1 on both sides of the claw cylinder chute; a slider 3-5 that can slide relative to the side surface of the baffle 3-4 is provided on the side wall of the cylinder body of the claw cylinder 3-2; a push plate 3-6 is provided at the lower part of the cylinder body of the claw cylinder 3-2, and a fixed end of the electromagnet 3-3 is provided on the inner wall of the clamping device housing 3-1, and the movable end push rod of the electromagnet 3-3 is connected to the push plate 3-6; a lower end cover 3-7 for closing the lower part of the clamping device housing 3-1 is provided at the lower part of the clamping device housing 3-1.

[0025] The protective cover 1 covers the upper part of the test device housing 2-1 of the speed measurement device 2, and the lower part of the test device housing 2-1 is connected to the upper part of the clamping device housing 3-1.

[0026] A battery 4 is connected to the side walls of the test device housing 2-1 and the clamping device housing 3-1. The battery 4 supplies energy to the encoder 2-2 and the electromagnet 3-3. The encoder 2-2 collects the speed signal of the speed measurement wheel 2-5 and feeds back the signal to control the movement of the electromagnet 3-3.

[0027] The base assembly 5 is composed of a first base 5-1 and a second base 5-2. Grooves are provided on the splicing end faces of the first base 5-1 and the second base 5-2 for embedding the lower parts of the clamping device housings 3-1 of the upper and lower sub-break wire protectors. Steps are provided in the grooves on the splicing end faces of the first base 5-1 and the second base 5-2, and the lower parts of the clamping device housings 3-1 of the upper and lower sub-break wire protectors are fixed on the steps by screws; the splicing end faces of the first base 5-1 and the second base 5-2 are fastened by bolt connection; the rear end of the first base 5-1 is connected to a fixing plate by a bolt, and the fixing plate is fixed together with the cross beam to which the tower crane pulley is fixed.

[0028] The protective cover 1, the housing 2-1 of the testing device, and the housing 3-1 of the clamping device are all composed of two sub-components spliced together on the left and right, and the two sub-components on the left and right are fixedly connected by screws.

[0029] On the splicing end faces of the two sub-components on the left and right of the protective cover 1, the housing 2-1 of the testing device, and the housing 3-1 of the clamping device, guide posts and guide grooves are respectively provided for positioning and guiding the splicing of the two sub-components on the left and right.

[0030] Usage method: The steel wire 6 passes through the two sub wire break protectors in sequence. When the steel wire 6 breaks, the descending speed of the steel wire 6 increases, the rotation speed of the speed measuring wheel 2-5 increases. After the encoder 2-2 collects the signal of abnormal speed, it sends a signal to the electromagnet 3-3. After receiving the signal, the movable end push rod of the electromagnet 3-3 pushes down the push plate of the claw cylinder 3-2, the claw cylinder 3-2 moves downward, and the claw petals of the claw cylinder 3-2 contract under the extrusion of the claw cylinder chute, that is, the claw cylinder 3-2 clamps the steel wire 6, thus playing the role of wire break protection.

[0031] The two sub wire break protectors play a dual role in wire break protection. If one sub wire break protector fails, the other sub wire break protector still plays a protective role.

[0032] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A double-sided wire break protector, characterized in that: It comprises two sub-broken wire protectors and a base assembly; the two sub-broken wire protectors are mirror-imaged on both sides of the base assembly, and the two sub-broken wire protectors are fixed by the base assembly; the sub-broken wire protector comprises a speed measuring device for measuring the descending speed of the steel wire and outputting an abnormal speed signal after the wire is broken, a clamping device for clamping the steel wire after receiving the abnormal speed signal, and a battery for powering the testing device and the clamping device.

2. A double-sided wire break protector according to claim 1, characterized in that: The speed measuring device includes a test device housing, an encoder, an auxiliary wheel, an axle seat, and a speed measuring wheel; the encoder is fixed on the test device housing; a steel wire vertically passes through the inside of the test device housing; a speed measuring wheel and an auxiliary wheel are arranged in parallel in the test device housing, and the steel wire surfaces of the speed measuring wheel and the auxiliary wheel roll; axle seats are provided at both ends of the central axis of the auxiliary wheel, an axle seat is provided at one end of the speed measuring wheel, and the other end is connected to the encoder; the axle seat is fixed to the inner wall of the test device housing.

3. A double-sided wire break protector according to claim 1, characterized in that: The clamping device includes a clamping device shell, a claw cylinder, an electromagnet, a baffle, a slider, a push plate, and a lower end cover; a claw cylinder slide groove for placing the claw cylinder is provided inside the clamping device shell; the upper part of the claw cylinder is a claw petal, and the lower part of the claw cylinder is a cylinder body. After the steel wire enters the clamping device shell, it passes through the cylinder body of the claw cylinder; the upper part of the claw cylinder slide groove is wide, which is used to place the claw petal in a relaxed state, and the lower part of the claw cylinder slide groove is narrow, which is used to place the cylinder body; symmetrically distributed baffles are provided on the inner wall of the clamping device shell on both sides of the claw cylinder slide groove; a slider that can slide relative to the side of the baffle is provided on the side wall of the cylinder body of the claw cylinder; a push plate is provided at the lower part of the cylinder body of the claw cylinder; the inner wall of the clamping device shell is provided with a fixed end of the electromagnet, and the push rod at the movable end of the electromagnet is connected to the push plate; the lower part of the clamping device shell is provided with a lower end cover for closing the lower part of the clamping device shell.

4. A double-sided wire break protector according to claim 1, characterized in that: It also includes a protective cover, which covers the upper part of the test device shell of the speed measuring device; the lower part of the test device shell is connected to the upper part of the clamping device shell.

5. The double-sided wire break protector according to claim 1, characterized in that: The base assembly is composed of a first base and a second base. The spliced ​​end faces of the first base and the second base are provided with a groove for embedding the lower part of the outer shell of the clamping device of the upper and lower sub-broken wire protectors. A step is provided in the groove of the spliced ​​end faces of the first base and the second base, and the lower part of the outer shell of the clamping device of the upper and lower sub-broken wire protectors is fixed to the step by screws; the spliced ​​end faces of the first base and the second base are fastened by bolt connection; the rear end of the first base is connected to a fixing plate by bolts, and the fixing plate is fixed together with the crossbeam fixed to the tower crane pulley.

6. The double-sided wire break protector according to any one of claims 2 to 4, characterized in that: The protective cover, the test device housing and the clamping device housing are all formed by splicing two left and right sub-components, and the left and right sub-components are fixedly connected by screws.

7. A double-sided wire break protector according to claim 6, characterized in that: The splicing end surfaces of the left and right sub-components are respectively provided with guide columns and guide grooves.

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