Elevator braking force detecting and adjusting device

Abstract

The invention relates to the technical field of elevator detection, in particular to an elevator braking force detection and adjustment device which is suitable for a drum brake of a traction elevator. The detection adjusting device comprises an integrated spring shaft, a jacking assembly and a right blocking piece. The integrated spring shaft comprises a small-diameter bolt, a connecting thin shaft, a large-diameter screw rod, an adjusting shaft cavity, a worm penetrating hole, a limiting protruding ring, a connecting channel and a through side hole. And the jacking assembly comprises an annular worm gear, a driving worm, a transmission insertion block, an inner threaded pipe, a transmission insertion groove, a jacking screw rod, a communicating side rod and a pressing circular ring. The right blocking piece is arranged on the integrated spring shaft and comprises a puller bolt, a sliding clamp and a clamping lock cylinder. According to the elevator braking force detecting and adjusting device, the elastic force of the braking spring can be detected in real time, and the final braking force is reflected through the elastic force of the spring.

Description

TECHNICAL FIELD

[0001] The application relates to the elevator detection technical field, in particular to an elevator brake force detection adjusting device. BACKGROUND

[0002] The elevator drum brake is usually a normally closed electromechanical brake. In the case of no power, the brake relies on the elastic force of the brake spring to drive the brake arm to clamp the brake wheel inward, thereby maintaining the braking state. The brake spring is the power source for generating braking force, and the spring force directly determines the final braking force of the elevator. The detection of the spring force is carried out by an indirect measurement method in daily inspection, that is, the magnetic force generated by the electromagnet overcomes the brake spring pressure to attract the armature and release the brake, and the lowest voltage at which the brake can just be opened is called the release voltage. The spring pressure can be obtained by measuring the release voltage and combining the standard value provided by the manufacturer.

[0003] However, the above indirect measurement has a large error, and a technical solution for directly obtaining the spring force by using a force gauge or a pressure sensor needs to be designed. SUMMARY

[0004] The elevator brake force detection adjusting device is suitable for a drum brake of a traction elevator, and the drum brake at least comprises a support, a brake wheel, a brake arm, a brake spring and an electromagnet coil.

[0005] The detection adjusting device comprises an integrated spring shaft, a pressing assembly and a right stop piece. The integrated spring shaft comprises a small-diameter bolt, a connecting thin shaft arranged on the right side of the small-diameter bolt, a large-diameter screw rod arranged on the right side of the connecting thin shaft, an adjusting shaft cavity arranged on the right half of the inner wall of the adjusting shaft cavity, a worm hole penetrating through the large-diameter screw rod in the front-rear direction and communicating with the adjusting shaft cavity, a limiting convex ring arranged on the right half of the inner wall of the adjusting shaft cavity, a connecting channel arranged on the left side of the adjusting shaft cavity and inserted into the connecting thin shaft, and through holes uniformly distributed in the circumferential direction and arranged on the outer wall of the connecting channel. The pressing assembly comprises a ring-shaped worm gear arranged on the left half of the adjusting shaft cavity and capable of rotating, a driving worm arranged in the worm hole and capable of rotating and meshing with the ring-shaped worm gear, a transmission plug fixedly arranged on the inner wall of the ring-shaped worm gear, an internal thread pipe sleeved on the ring-shaped worm gear, a transmission slot formed on the outer wall of the internal thread pipe and in plug-in cooperation with the transmission plug, a tightening screw rod screwed on the left side of the internal thread pipe and penetrating through the connecting channel, communication side rods uniformly distributed in the circumferential direction and arranged on the outer wall of the tightening screw rod and in plug-in cooperation with the through side holes, and a pressing ring sleeved on the outer wall of the connecting thin shaft and connected with the communication side rods. The right stop piece is arranged on the integrated spring shaft. The brake spring is arranged between the right stop piece and the brake arm of the integrated spring shaft.

[0006] The right stop includes a tightening bolt, a sliding clamp, and a clamping lock cylinder; The tightening bolt includes an internally threaded tube screwed onto the large-diameter screw, an external hexagonal terminal formed on the right side of the internally threaded tube, a limiting ring groove set on the outer wall of the internally threaded tube, a rotatable adjusting ring set in the limiting ring groove, through transverse holes evenly distributed circumferentially in the adjusting ring, arc-shaped insertion holes evenly distributed circumferentially on the left side of the limiting ring groove, a side-mounted circular cavity formed on the left side of the internally threaded tube and communicating with the arc-shaped insertion hole, and tightening side holes evenly distributed circumferentially on the left side of the side-mounted circular cavity. The sliding clamp includes an annular base located in the side-mounted circular cavity, a clamping protrusion located on the left side of the annular base and inserted into the clamping side hole, a clamping annular groove located on the right half of the annular base, a groove edge protrusion formed on the right side of the clamping annular groove, and radial insertion holes evenly distributed on the left side of the clamping annular groove. The clamping lock cylinder includes a rotatable lock cylinder ring disposed in the clamping ring groove, a ring side groove disposed on the outer right side of the lock cylinder ring and cooperating with the groove side protrusion ring, and driven horizontal shafts evenly distributed circumferentially on the right side of the lock cylinder ring. The driven horizontal shafts pass through the arc-shaped insertion hole and are inserted into the corresponding through horizontal hole. The left side of the lock cylinder ring is evenly distributed with active inclined grooves. Each radial insertion hole is respectively inserted with a radial locking rod. Each radial locking rod has a driven short rod on its right side that is inserted and cooperates with the active inclined groove one by one.

[0007] It also includes a pressure sensor, which is located on the right side of the adjustment shaft cavity.

[0008] The right side of the internally threaded tube has a right end face that abuts against the pressure sensor.

[0009] The pressure sensor is a disc-shaped pressure sensor.

[0010] The beneficial effects of this invention are: The elevator braking force detection and adjustment device of the present invention, under normal conditions, compresses the brake spring by turning the right stop, and the brake spring provides braking force to the brake wheel through the drive brake arm; the external hexagonal terminal is easy to operate with a wrench.

[0011] The elevator braking force detection and adjustment device described in this case can detect the braking spring force and react to the final braking force through the spring force: the clamping lock core retracts and stops on the left side of the top pressure assembly, and adjusting the top pressure assembly can drive the clamping lock core and the sliding clamp to move to the left until the sliding clamp replaces the top bolt to achieve direct contact with the braking spring. At this time, the real-time braking spring force can be obtained by reading the pressure sensor. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of one embodiment of the drum brake.

[0014] Figure 2 This is a schematic diagram of one embodiment of the detection and adjustment device.

[0015] Figure 3 This is a cross-sectional view of the first state of the detection and adjustment device.

[0016] Figure 4 This is a cross-sectional view of the second state of the detection and adjustment device.

[0017] Figure 5 This is a cross-sectional view of the third state of the detection and adjustment device.

[0018] Figure 6 This is a cross-sectional view of one embodiment of the integrated spring shaft.

[0019] Figure 7 This is a cross-sectional view of one embodiment of the integrated spring shaft and top pressure assembly.

[0020] Figure 8 This is a schematic diagram of one embodiment of the right stop member.

[0021] Figure 9 This is a partial cross-sectional view of one embodiment of the tightening bolt.

[0022] Figure 10 This is a cross-sectional view of one embodiment of the sliding clamp.

[0023] Figure 11 This is a cross-sectional view of one embodiment of the sliding clamp and clamping lock cylinder.

[0024] Figure 12 This is a schematic diagram of one embodiment of the lock cylinder ring.

[0025] The numbers in the diagram are as follows: 9. Drum brake; 91. Brake bracket; 92. Brake wheel; 93. Brake arm; 94. Brake spring; 95. Electromagnetic coil; 8. Testing and adjustment device; 1. Integrated spring shaft; 11. Small diameter bolt; 12. Connecting thin shaft; 13. Large diameter screw; 14. Adjusting shaft cavity; 15. Worm gear through hole; 16. Limiting convex ring; 17. Connecting channel; 18. Through side hole; 2. Pressing assembly, 21. Annular worm gear, 22. Driving worm, 23. Transmission insert, 24. Internal threaded tube, 25. Transmission slot, 26. Pressing screw, 27. Connecting side rod, 28. Pressing ring; 3. Right stop; 31. Tightening bolt; 311. Internally threaded pipe; 312. External hexagonal terminal; 313. Limiting ring groove; 314. Adjusting ring; 315. Through horizontal hole; 316. Arc-shaped insertion hole; 317. Side-mounted circular cavity; 318. Tightening side hole. 32. Sliding clamp; 321. Annular base; 322. Tightening protrusion; 323. Clamp annular groove; 324. Groove edge protruding ring; 325. Radial insertion hole; 33. Clamping lock cylinder; 331. Lock cylinder ring; 332. Ring side groove; 333. Driven horizontal shaft; 334. Driven oblique groove; 335. Radial lock rod; 336. Driven short rod. 4. Pressure sensor. Detailed Implementation

[0026] An elevator braking force detection and adjustment device is applicable to the drum brake 9 of a traction elevator. The drum brake 9 includes at least a bracket 91, a brake wheel 92, a brake arm 93, a brake spring 94, and an electromagnetic coil 95.

[0027] The detection and adjustment device 8 includes an integrated spring shaft 1, a top pressure assembly 2, and a right stop 3; The integrated spring shaft 1 includes a small-diameter bolt 11, a connecting thin shaft 12 located on the right side of the small-diameter bolt 11, a large-diameter screw 13 located on the right side of the connecting thin shaft 12, an adjusting shaft cavity 14 located on the right side inside the large-diameter screw 13, a worm gear through hole 15 that passes through the large-diameter screw 13 in the front-back direction and communicates with the adjusting shaft cavity 14, a limiting protrusion ring 16 located on the right half of the inner wall of the adjusting shaft cavity 14, a connecting channel 17 located on the left side of the adjusting shaft cavity 14 and inserted into the connecting thin shaft 12, and through side holes 18 evenly distributed around the outer edge of the connecting channel 17. The top-pressing assembly 2 includes an annular worm gear 21 rotatably disposed in the left half of the adjusting shaft cavity 14, a driving worm 22 rotatably disposed in the worm through hole 15 and meshing with the annular worm gear 21, a transmission insert 23 fixedly disposed on the inner wall of the annular worm gear 21, an internally threaded tube 24 sleeved in the annular worm gear 21, a transmission slot 25 formed on the outer wall of the internally threaded tube 24 and inserted into the transmission insert 23, a top-pressing screw 26 screwed to the left side of the internally threaded tube 24 and passing through the connecting channel 17, a connecting side rod 27 circumferentially distributed on the outer wall of the top-pressing screw 26 and inserted into the through side hole 18, and a pressing ring 28 slidably sleeved on the outer wall of the connecting thin shaft 12 and connected to the connecting side rod 27; The right stop 3 is mounted on the integrated spring shaft 1; The integrated spring shaft 1 is located between the right stop 3 and the brake arm 93, where the brake spring 94 is installed.

[0028] The right stop 3 includes a tightening bolt 31, a sliding clamp 32, and a clamping lock cylinder 33; The tightening bolt 31 includes an internally threaded tube 311 screwed onto the large-diameter screw 13, an external hexagonal terminal 312 formed on the right side of the internally threaded tube 311, a limiting ring groove 313 set on the outer wall of the internally threaded tube 311, an adjusting ring 314 rotatably set in the limiting ring groove 313, a through transverse hole 315 evenly distributed in the adjusting ring 314, an arc-shaped insertion hole 316 evenly distributed on the left side of the limiting ring groove 313, a side-mounted circular cavity 317 formed on the left side of the internally threaded tube 311 and communicating with the arc-shaped insertion hole 316, and a tightening side hole 318 evenly distributed on the left side of the side-mounted circular cavity 317. The sliding clamp 32 includes an annular base 321 disposed in the side-positioned circular cavity 317, a clamping protrusion 322 disposed on the left side of the annular base 321 and inserted into the clamping side hole 318, a clamping annular groove 323 disposed on the right half of the annular base 321, a groove edge protrusion ring 324 formed on the right side of the clamping annular groove 323, and radial insertion holes 325 evenly distributed on the left side of the clamping annular groove 323. The clamping lock cylinder 33 includes a lock cylinder ring 331 rotatably disposed in the clamping ring groove 323, a ring side groove 332 disposed on the outer right side of the lock cylinder ring 331 and cooperating with the groove side protrusion ring 324, and a driven horizontal shaft 333 circumferentially distributed on the right side of the lock cylinder ring 331. The driven horizontal shaft 333 passes through the arc-shaped insertion hole 316 and is inserted into the corresponding through horizontal hole 315. The left side of the lock cylinder ring 331 is circumferentially distributed with active inclined grooves 334. Each radial insertion hole 325 is respectively inserted with a radial locking rod 335. Each radial locking rod 335 is provided with a driven short rod 336 on the right side that is inserted and cooperates with the active inclined groove 334.

[0029] It also includes a pressure sensor 4, which is located on the right side of the adjustment shaft cavity 14.

[0030] The right side of the internally threaded tube 24 is provided with a right end face that abuts against the pressure sensor 4.

[0031] The pressure sensor 4 is a disc-shaped pressure sensor.

[0032] It should be noted that the inner diameter of the annular base 321 is not less than the inner diameter of the internally threaded pipe 311.

[0033] Furthermore, when the radial locking rod 335 is in its outermost position, the inner end of the radial locking rod 335 is completely submerged in the radial insertion hole 325, thus preventing the inner side of the radial locking rod 335 from affecting the screw connection between the internal threaded tube 311 and the large-diameter screw 13.

[0034] Furthermore, when the radial locking rod 335 is in its innermost position, the inner end of the radial locking rod 335... The elevator braking force detection and adjustment device described in this case adjusts the braking force as follows under normal conditions: Pass the integrated spring shaft 1 through the opening on the brake arm 93 from right to left, and then screw the small diameter bolt 11 onto the bracket 91. Fit the brake spring 94 into the integrated spring shaft 1 and abut against the right side of the brake arm 93; Tighten the external hexagonal terminal 312, and then gradually screw the right stop 3 into the large-diameter screw 13 from right to left. The internal threaded tube 311 gradually squeezes the brake spring 94 until the braking force meets the requirements.

[0035] This system can also detect braking force in real time, as follows: S1, Right stop 3 switching mode: Rotate the adjusting ring 314 and the through transverse hole 315; The through transverse hole 315 acts on the driven transverse shaft 333, thereby driving the annular side groove 332, the lock core ring 331, and the active inclined groove 334 to rotate. The active inclined groove 334 acts on the corresponding driven short rod 336, thereby driving the radial locking rod 335 to move inward until the inner side of the radial locking rod 335 stops at the left side of the clamping ring 28; S2, pressurize the top pressure assembly 2: Rotating the active worm gear 22 drives the annular worm wheel 21 and the transmission plug 23 to rotate, which in turn drives the transmission slot 25 and the internal threaded tube 24 to rotate relative to the tightening screw 26, the connecting side rod 27 and the pressing ring 28. The internal threaded tube 24 is separated from the tightening screw 26, the connecting side rod 27, and the clamping ring 28 until the internal threaded tube 24 abuts against the pressure sensor 4 to the right, while the clamping ring 28 abuts against the radial locking rod 335 to the left. Continue rotating the drive worm gear 22, the tightening screw 26, the connecting side rod 27, and the pressing ring 28 move to the left, and drive the clamping lock core 33 and the sliding clamp 32 to move to the left relative to the tightening bolt 31 through the radial locking rod 335; Until the tightening protrusion 322 extends to the left out of the tightening side hole 318 and abuts against the brake spring 94, when the right end of the spring begins to deform, its right end no longer applies clamping pressure to the tightening bolt 31, but instead applies pressure directly to the pressure sensor 4 through the clamping ring 28, the connecting side rod 27, the tightening screw 26, and the internal threaded tube 24. The control system connected to the pressure sensor 4 reads the rightward elastic force of the brake spring 94 in real time.

[0036] Furthermore, the method for adjusting the spring force of the brake spring 94 is as follows: When the braking force of the brake spring 94 is found to be insufficient, the drive worm gear 22 continues to rotate and eventually drives the clamping lock core 33 to continue to squeeze the brake spring 94 to the left until the spring force meets the requirements.

[0037] Then rotate the tightening bolt 31 to move it to the left until the left side of the internal threaded tube 311 just replaces the tightening protrusion 322 and abuts against the brake spring 94.

Claims

1. An elevator braking force detection and adjustment device, applicable to the drum brake (9) of a traction elevator, wherein the drum brake (9) includes at least a bracket (91), a brake wheel (92), a brake arm (93), a brake spring (94), and an electromagnetic coil (95), characterized in that: The detection and adjustment device (8) includes an integrated spring shaft (1), a top pressure assembly (2), and a right stop (3); The integrated spring shaft (1) includes a small diameter bolt (11), a connecting thin shaft (12) located on the right side of the small diameter bolt (11), a large diameter screw (13) located on the right side of the connecting thin shaft (12), an adjusting shaft cavity (14) located on the right side inside the large diameter screw (13), a worm gear through hole (15) that passes through the large diameter screw (13) in the front-back direction and communicates with the adjusting shaft cavity (14), a limiting protrusion ring (16) located on the right half of the inner wall of the adjusting shaft cavity (14), a connecting channel (17) located on the left side of the adjusting shaft cavity (14) and inserted into the connecting thin shaft (12), and through side holes (18) evenly distributed around the outer edge of the connecting channel (17). The top-pressing assembly (2) includes a rotatable annular worm gear (21) located in the left half of the adjusting shaft cavity (14), a rotatable active worm gear (22) located in the worm through hole (15) and meshing with the annular worm gear (21), a transmission plug (23) fixedly set on the inner wall of the annular worm gear (21), an internal thread tube (24) sleeved in the annular worm gear (21), a transmission slot (25) formed on the outer wall of the internal thread tube (24) and inserted into the transmission plug (23), a top-pressing screw (26) screwed to the left side of the internal thread tube (24) and passing through the connecting channel (17), a connecting side rod (27) evenly distributed on the outer wall of the top-pressing screw (26) and inserted into the through side hole (18), and a pressing ring (28) slidably sleeved on the outer wall of the connecting thin shaft (12) and connected to the connecting side rod (27). The right stop (3) is mounted on the integrated spring shaft (1); The brake spring (94) is located between the right stop (3) and the brake arm (93) on the integrated spring shaft (1).

2. The elevator braking force detection and adjustment device according to claim 1, characterized in that: The right stop (3) includes a tightening bolt (31), a sliding clamp (32), and a clamping lock cylinder (33); The tightening bolt (31) includes an internally threaded tube (311) screwed onto the large-diameter screw (13), an external hexagonal terminal (312) formed on the right side of the internally threaded tube (311), a limiting ring groove (313) provided on the outer wall of the internally threaded tube (311), an adjustable ring (314) rotatably provided in the limiting ring groove (313), a through transverse hole (315) evenly distributed in the adjusting ring (314) around the circumference, an arc-shaped insertion hole (316) evenly distributed on the left side of the limiting ring groove (313) around the circumference, a side-mounted circular cavity (317) formed on the left side of the internally threaded tube (311) and communicating with the arc-shaped insertion hole (316), and a tightening side hole (318) evenly distributed on the left side of the side-mounted circular cavity (317) around the circumference. The sliding clamp (32) includes an annular base (321) disposed in the side-mounted circular cavity (317), a clamping protrusion (322) disposed on the left side of the annular base (321) and inserted into the clamping side hole (318), a clamping annular groove (323) disposed on the right half of the annular base (321), a groove edge protrusion ring (324) formed on the right side of the clamping annular groove (323), and radial insertion holes (325) evenly distributed on the left side of the clamping annular groove (323). The clamping lock cylinder (33) includes a lock cylinder ring (331) rotatably disposed in the clamping ring groove (323), a ring side groove (332) disposed on the outer right side of the lock cylinder ring (331) and cooperating with the groove side protrusion ring (324), and a driven horizontal shaft (333) circumferentially distributed on the right side of the lock cylinder ring (331). The driven horizontal shaft (333) passes through the arc-shaped insertion hole (316) and is inserted into the corresponding through horizontal hole (315). The left side of the lock cylinder ring (331) is circumferentially distributed with active inclined grooves (334). Each radial insertion hole (325) is respectively inserted with a radial locking rod (335). Each radial locking rod (335) is provided with a driven short rod (336) on the right side that is inserted and cooperates with the active inclined groove (334).

3. The elevator braking force detection and adjustment device according to claim 2, characterized in that: It also includes a pressure sensor (4), which is located on the right side of the adjustment shaft cavity (14).

4. The elevator braking force detection and adjustment device according to claim 3, characterized in that: The right side of the internally threaded tube (24) is provided with a right end face that abuts against the pressure sensor (4).

5. The elevator braking force detection and adjustment device according to claim 4, characterized in that: The pressure sensor (4) is a disc-shaped pressure sensor.

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