Stabilizing structure for traction machine

Abstract

The invention relates to the technical field of elevators, and discloses a stable structure for a traction machine, which comprises a base, a traction wheel and a gear box are arranged on a traction machine main body, a protection part is mounted on the base and buffers and controls the abnormal rotating speed when the traction machine breaks down through the rotating centrifugal force of the traction wheel, and a mounting part is arranged on the front side of the base and is used for mounting the traction machine. The anti-falling arm is installed on the protection part and used for stably installing the protection part, the emergency reaction part is installed on the gearbox and used for conducting emergency locking on the traction wheel after brake failure of the traction machine, and the positioning seat is installed on the front side of the base. When the traction wheel breaks down and is abnormal and the rotating speed is too high, the shifting rod stretches out of the rod sleeve through centrifugal force and makes contact with the shifting plate for extrusion, the shifting plate drives the cross beam and the non-slip mat to do reciprocating lifting motion, intermittent extrusion is conducted on the steel wire rope, speed reduction and buffering are achieved, and the accident risk is prevented from being further increased.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and specifically to a stable structure for a traction machine. Background Art

[0002] A traction machine is the power equipment of an elevator, also known as the elevator main machine, and its function is to transmit and transfer power to make the elevator operate. A traction machine usually consists of a motor, a brake, a reduction gearbox, a frame, a guide wheel, etc. During the working process of the traction machine, the stable structure plays a crucial role. It can ensure the smooth operation of the traction machine, reduce vibration and noise, and improve the safety and comfort of the elevator.

[0003] According to Chinese Patent Publication No. CN108439156B, this patent provides a stable elevator traction machine, including a traction machine main body, and further including a mounting base arranged on the traction machine main body, a screw hole arranged on the mounting base, a mounting bolt arranged on the screw hole, a connecting ring arranged on the mounting bolt, a magnet sheet arranged on the lower surface of the connecting ring, and an electromagnet attracting unit arranged on the screw hole and used for fixing the mounting bolt by magnetically attracting the magnet sheet. By arranging the mounting base, the mounting bolt, the connecting ring, the magnet sheet, the electromagnet attracting unit and a dust-proof unit on the traction machine main body, the purpose of stable installation and fixation of the elevator traction machine is achieved, and it has the advantages of stable and effective installation structure, convenient and flexible loading and unloading operation, and good dust-proof effect of the traction wheel.

[0004] The stable structure of the traction machine in the above technology can only further improve the stability of the traction machine under normal operation. However, in real life, an elevator is a special equipment with relatively high risks. That is to say, the operation risk of the elevator always exists. In an emergency state, due to a fault, the traction machine cannot be correctly braked and locked, resulting in the risk of the counterweight falling rapidly or rising, which brings the risk of the car falling or overshooting to the safety of passengers. The existing technology for the stable structure of the traction machine can only ensure its stability during loading, unloading and operation, and it is difficult to achieve active protection in an emergency state, resulting in the psychological pressure of relevant practitioners and passengers on elevator faults that cannot be reduced. Therefore, a stable structure for a traction machine is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the present invention provides a stable structure for a traction machine, which solves the problem that the existing stable structure of the traction machine is difficult to achieve active protection in an emergency state.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present invention provides the following technical solutions: A stable structure for a traction machine, including a base, the traction machine main body is provided with a traction wheel and a gearbox, a protection part is installed on the base, and the abnormal speed during traction machine failure is buffered and speed-controlled by the centrifugal force generated by the rotation of the traction wheel. An installation part is arranged on the front side of the base for stably installing the protection part. An emergency response part is installed on the gearbox for urgently locking the traction wheel after the braking of the traction machine fails. A positioning seat is installed on the front side of the base.

[0009] Preferably, the protection part includes a gasket, a dial plate is fixedly connected to the middle of the top of the gasket, springs are fixedly connected to the bottoms of both ends of the gasket, arms are fixedly connected to the tops of both ends of the gasket, cross beams are fixedly connected to the ends of both arms, anti-slip pads are fixedly connected to the bottoms of both cross beams, limiting arms are arranged on both cross beams, a connecting plate is fixedly connected between both arms, and a locking hole is opened on the connecting plate.

[0010] Preferably, the limiting arm is of a U-shaped structure, the two ear ends of the limiting arm are respectively fixedly connected to the ends of the two cross beams, and the number of anti-slip pads on each cross beam is the same as the number of steel cable tracks of the traction wheel and is arranged in one-to-one alignment.

[0011] Preferably, the installation part includes an inner groove, the inner groove is opened on the front side of the end of the base, a magnet is installed on the bottom of the inner wall of the inner groove, the gasket is slidably connected to the inner wall of the inner groove, and the gasket is elastically connected to the bottom of the inner wall of the inner groove through two springs.

[0012] Preferably, the gasket and the magnet attract each other with opposite polarities. A rod sleeve is fixedly connected to the outer wall of the traction wheel, the sleeve opening of the rod sleeve faces downward, a dial rod is slidably connected to the inner wall of the rod sleeve, and a first tension spring is elastically connected between the dial rod and the inner wall of the rod sleeve.

[0013] Preferably, the dial plate slidably penetrates through the inner groove and extends to the top of the base, the dial plate and the dial rod are arranged in alignment, the end of the dial rod close to the dial plate is of a spherical structure, the top of the dial plate is of an arc surface structure, both arms slide upward through the inner groove, and both arms and the dial plate are arranged in a staggered manner.

[0014] Preferably, the emergency response part includes an arc seat, the arc seat is installed on the outer wall of the gearbox, two anti-disengagement arms are symmetrically installed on the top of the arc seat, each anti-disengagement arm is provided with a sliding hole corresponding to the anti-slip pad, an emergency rod slidably penetrates through the middle of the arc seat, a limiting plate is fixedly sleeved on the rear end of the emergency rod, a baffle is installed on the outer arc surface of the arc seat, and a second tension spring is elastically connected between the baffle and the limiting plate.

[0015] Preferably, the anti-slip pads on the two cross beams are respectively slidably connected to the inner walls of the corresponding sliding holes, and the two anti-disengagement arms are in contact with the outer wall of the traction wheel.

[0016] Preferably, the top of the limiting plate is a hook-shaped structure, the limiting arm is clamped inside the hook end of the limiting plate, a support disc is installed on the inner wall of the traction wheel, the traction wheel is fixedly connected to the output shaft of the gearbox through the support disc, the support disc has six support foot structures, the front end of the emergency rod is a spherical structure, and the emergency rod is aligned with the area between two adjacent support feet on the support disc.

[0017] Preferably, the output shaft of the gearbox is rotatably connected to the positioning seat, an installation plate is arranged between the positioning seat and the base, and the positioning seat is installed on the front side of the base through the installation plate and seals the inner groove.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the present invention provides a stable structure for a traction machine, which has the following beneficial effects:

[0020] 1. For this stable structure for a traction machine, when the traction wheel is running normally, the anti-disengagement arm improves the rotational stability of the traction wheel and avoids derailment of the steel wire rope. When the traction wheel fails and rotates at an abnormal high speed, the lever projects out of the rod sleeve by centrifugal force and contacts and presses the dial plate, so that the dial plate drives the cross beam and the anti-slip pad to reciprocate up and down, intermittently squeezing the steel wire rope, realizing speed reduction and buffering, and avoiding further increase of accident risks.

[0021] 2. For this stable structure for a traction machine, when the braking further fails and causes the elevator to fall or overrun, the lever projects its rod body out of the rod sleeve by centrifugal force, completely presses the dial plate downward, the gasket contacts and is adsorbed by the magnet, the support arm drives the cross beam to descend, the anti-slip pad presses the steel wire rope to force braking, and at the same time the limiting arm slips out of the limiting plate, and the emergency rod ejects and inserts into the support disc of the traction wheel for limiting and blocking, forcibly locking the traction wheel in case of braking failure, realizing emergency response, and further improving the safety of the elevator under failure.

[0022] 3. For this stable structure for a traction machine, the emergency rod locks the support arm through the locking hole to prevent it from sliding upward and resetting, always keeping the anti-slip pad pressing the steel wire rope, and actively protecting the elevator by relying on the rotational power of the traction wheel itself under conditions such as power failure, power cut-off, and no intelligence, improving emergency safety, being able to provide more effective safety guarantee in the crisis state of the elevator, reducing the possibility of accidents, and thus reducing the concerns and fears of relevant personnel about the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The front side shaft view of a stable structure for a traction machine proposed by the present invention;

[0024] Figure 2 Rear axonometric view of a stabilizing structure for a traction machine proposed by the present invention;

[0025] Figure 3 Schematic structural diagram of a traction machine main body in a stabilizing structure for a traction machine proposed by the present invention;

[0026] Figure 4 Cross-sectional view of a base in a stabilizing structure for a traction machine proposed by the present invention;

[0027] Figure 5 Connection diagram of a base and a protection part in a stabilizing structure for a traction machine proposed by the present invention;

[0028] Figure 6 Schematic structural diagram of a protection part in a stabilizing structure for a traction machine proposed by the present invention;

[0029] Figure 7 Connection diagram of a traction machine main body, a protection part and an emergency response part in a stabilizing structure for a traction machine proposed by the present invention;

[0030] Figure 8 Schematic structural diagram of an emergency response part in a stabilizing structure for a traction machine proposed by the present invention.

[0031] In the figure: 1. Base; 2. Traction machine main body; 3. Protection part; 31. Gasket; 32. Pusher plate; 33. Spring; 34. Support arm; 35. Cross beam; 36. Anti-slip pad; 37. Limit arm; 38. Connecting plate; 39. Locking hole; 4. Installation part; 41. Inner groove; 42. Magnet; 5. Rod sleeve; 6. Pushing rod; 7. Emergency response part; 71. Arc seat; 72. Anti-disengagement arm; 73. Sliding hole; 74. Emergency rod; 75. Limit plate; 76. Baffle plate; 77. Second tension spring; 8. Positioning seat. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1-8, the present invention provides a technical solution: a stable structure for a traction machine, including a base 1. The base 1 is T-shaped and is mainly used for installing the existing traction machine and its related drive motors, braking devices, etc. The traction machine main body 2 is provided with a traction wheel and a gearbox. The traction machine main body 2 belongs to the YJ245 geared permanent magnet asynchronous traction machine in the prior art, which is mainly used for the wire rope traction in the elevator field to enable the elevator car and the counterweight to achieve the function of lifting and lowering. The protection part 3 of this case is installed on the base 1, and buffers and controls the abnormal speed when the traction machine fails through the centrifugal force generated by the rotation of the traction wheel. The installation part 4 of this case is arranged on the front side of the base 1 and is used for stably installing the protection part 3. The emergency response part 7 of this case is installed on the gearbox and is used for urgently locking the traction wheel after the braking of the traction machine fails. The positioning seat 8 is installed on the front side of the base 1.

[0034] In this embodiment, in order to reduce the speed and buffer under the abnormal speed of the traction wheel, the protection part 3 of this case includes a gasket 31. The middle of the top of the gasket 31 is fixedly connected with a dial 32. Both ends of the bottom of the gasket 31 are fixedly connected with springs 33. Both ends of the top of the gasket 31 are fixedly connected with support arms 34. The ends of the two support arms 34 are both fixedly connected with cross beams 35. Both bottoms of the two cross beams 35 are fixedly connected with anti-slip pads 36. Limit arms 37 are arranged on the two cross beams 35. A connecting plate 38 is fixedly connected between the two support arms 34. A locking hole 39 is opened on the connecting plate 38. The limit arm 37 is a U-shaped structure. The two ear ends of the limit arm 37 are respectively fixedly connected with the ends of the two cross beams 35. The number of anti-slip pads 36 on each cross beam 35 is the same as the number of wire rope tracks of the traction wheel and is arranged in one-to-one alignment. A wire rope is wound in each wire rope track, and the anti-slip pad 36 can be abutted against the rotating wire rope by downward extrusion, thereby avoiding the risk of the wire rope slipping in the track.

[0035] It should be noted that in order to enable the protection part 3 to make full use of the space structure of the traction machine main body 2 for installation, the installation part 4 in this case includes an inner groove 41. The inner groove 41 is opened on the front side of the end of the base 1. A magnet 42 is installed at the bottom of the inner wall of the inner groove 41. The gasket 31 is slidably connected to the inner wall of the inner groove 41. The gasket 31 is elastically connected to the bottom of the inner wall of the inner groove 41 through two springs 33. The springs 33 can always push the gasket 31 up to the top of the inner wall of the inner groove 41. The gasket 31 is concealedly installed in the inner groove 41 to achieve controllable lifting operation. The output shaft of the gearbox is rotatably connected to the positioning seat 8. An installation plate is arranged between the positioning seat 8 and the base 1. The positioning seat 8 is installed on the front side of the base 1 through the installation plate and seals the inner groove 41. The gasket 31 and the magnet 42 attract each other with opposite polarities. When the gasket 31 slides down and contacts the magnet 42, it will be adsorbed, thereby driving the support arm 34 and the cross beam 35 to descend. A rod sleeve 5 is fixedly connected to the outer wall of the traction wheel. The mouth of the rod sleeve 5 faces downward. A shift lever 6 is slidably connected to the inner wall of the rod sleeve 5. A first tension spring is elastically connected between the shift lever 6 and the inner wall of the rod sleeve 5. The centrifugal force generated during the rotation of the traction wheel can cause the first tension spring to elastically expand and contract with the rotation speed, thereby prompting the shift lever 6 to slide in the rod sleeve 5. The shift plate 32 slides through the inner groove 41 and extends to the top of the base 1. The shift plate 32 and the shift lever 6 are arranged in alignment. The end of the shift lever 6 close to the shift plate 32 is a spherical structure. The top of the shift plate 32 is an arc surface structure. When the shift lever 6 extends out of the rod sleeve 5 due to centrifugal force, the spherical surface of the rod head will squeeze the arc surface of the shift plate 32, thereby prompting the shift plate 32 to contract into the inner groove 41. Both support arms 34 slide upward through the inner groove 41. The two support arms 34 and the shift plate 32 are arranged in a staggered manner. The staggered arrangement will not cause the rod sleeve 5 to collide with and obstruct the support arms 34 when rotating.

[0036] It should be noted that in order to physically and automatically lock the traction wheel at an abnormal speed when the braking fails, the emergency response department 7 of this case includes an arc seat 71, which is installed on the outer wall of the gearbox. Two anti - detachment arms 72 are symmetrically installed at the top of the arc seat 71. Each anti - detachment arm 72 is provided with a sliding hole 73 corresponding to the anti - slip pad 36. An emergency rod 74 slides through the middle of the arc seat 71. A limiting plate 75 is fixedly sleeved at the rear end of the emergency rod 74. A baffle plate 76 is installed on the outer arc surface of the arc seat 71. A second tension spring 77 is elastically connected between the baffle plate 76 and the limiting plate 75. The anti - slip pads 36 on the two cross beams 35 are respectively slidably connected to the inner walls of the corresponding sliding holes 73. Both anti - detachment arms 72 are in contact with the outer wall of the traction wheel. This contact state can, on the one hand, ensure the stability of the traction wheel rotation and avoid jitter, and on the other hand, limit each steel wire rope to avoid the problem of the steel wire rope derailing. The top of the limiting plate 75 is a hook - shaped structure, and the limiting arm 37 is clamped inside the hook end of the limiting plate 75. A support disc is installed on the inner wall of the traction wheel. The traction wheel is fixedly connected to the output shaft of the gearbox through the support disc. The support disc has six support foot structures. The front end of the emergency rod 74 is a spherical structure. The emergency rod 74 is aligned with the area between two adjacent support feet on the support disc. The emergency rod 74 is pulled by the second tension spring 77 and ejects into the space between the two support feet to forcibly lock the traction wheel.

[0037] Working principle: The main body 2 of the traction machine is installed in the elevator machine room through the base 1. When the traction wheel is running normally, the anti - detachment arm 72 improves the stability of the traction wheel rotation by limiting the outer wall of the traction wheel, and avoids the risk of the steel wire rope falling off and being misaligned from the steel cable track of the traction wheel. During the stable operation of the main body 2 of the traction machine, the traction wheel rotates at a constant speed. At this time, the lever 6 always slides towards the mouth of the sleeve 5 of the rod sleeve through the centrifugal force of rotation but does not slide out. When the traction wheel fails and rotates abnormally at an excessive speed, the end of the lever 6 is thrown out by the centrifugal force. Thus, it contacts and presses the dial plate 32 every time it rotates one week. After being pressed, the dial plate 32 contracts into the inner groove 41 and then resets through the elastic force of the spring 33, so that the dial plate 32 realizes the reciprocating lifting effect. At the same time, it drives the cross beam 35 through the support arm 34 and promotes the anti - slip pad 36 to reciprocate up and down along the sliding hole 73, intermittently squeezing each steel wire rope, thereby achieving the effect of speed reduction and buffering when the traction wheel rotates abnormally, and avoiding the further increase of the accident risk due to the continuous acceleration of the abnormal rotation speed of the traction wheel.

[0038] Under the above-mentioned automatic speed reduction and buffering under the rotational centrifugal force of the traction wheel, more reaction time is provided for brake recovery. If the brake further fails at this time, causing the elevator to fall or overshoot, whether the car falls rapidly or the counterweight falls rapidly will cause the traction wheel to rotate at high speed without being restricted by the brake. At this time, the rotational centrifugal force is greater, which will directly throw the rod body of the lever 6 out of the rod sleeve 5. One end of the tension spring prevents the lever 6 from being thrown off the rod sleeve 5 and can also reset the lever 6 in time when the centrifugal force weakens. Under strong centrifugal force, the rod body of the lever 6 contacts the dial plate 32 and completely squeezes the dial plate 32 downward, causing the gasket 31 to contact the magnet 42 to generate adsorption. At this time, the adsorbed dial plate 32 is no longer reset by the elastic force of the spring 33, and the support arm 34 also drives the cross beam 35 to descend to the lowest position where it can descend. The anti-slip pad 36 presses tightly on the steel wire rope for forced braking. At the same time, the limit arm 37 will completely slip out of the hook-shaped end of the limit plate 75 due to the sufficient descending distance, so that the limit plate 75 is quickly pulled by the tension of the second tension spring 77 and drives the emergency rod 74 to eject and insert into the support disk of the traction wheel to limit and block the support feet. At the same time, after the support arm 34 descends, it drives the connecting plate 38 to align with the emergency rod 74, prompting the end of the emergency rod 74 to insert into the locking hole 39. On the one hand, it forcibly stops the traction wheel in case of brake failure. Using the physical characteristics of centrifugal force and without the need to use a circuit to achieve an emergency response, it can further improve safety in the crisis state of the elevator. At the same time, the emergency rod 74 also locks the support arm 34 through the locking hole 39 to prevent it from sliding upward and resetting, always keeping the anti-slip pad 36 pressing tightly on the steel wire rope, further improving emergency safety. Thus, under conditions such as no power, power failure, and no intelligence, it can also rely on the rotational power of the traction wheel itself to take active protective measures for the elevator, further reducing the psychological pressure of relevant practitioners and passengers on the elevator.

[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A stable structure for a traction machine, characterized in that, Comprising: Base (1); Traction machine main body (2), provided with a traction wheel and a gearbox; Protection part (3), installed on the base (1), buffering and controlling the abnormal speed when the traction machine fails through the centrifugal force generated by the rotation of the traction wheel; Installation part (4), arranged on the front side of the base (1), for stably installing the protection part (3); Emergency response part (7), installed on the gearbox, for urgently locking the traction wheel after the braking of the traction machine fails; Positioning seat (8), installed on the front side of the base (1).

2. The stable structure for a traction machine according to claim 1, wherein: The protection part (3) includes a gasket (31), a dial plate (32) is fixedly connected to the middle of the top of the gasket (31), springs (33) are fixedly connected to the bottoms of both ends of the gasket (31), support arms (34) are fixedly connected to the tops of both ends of the gasket (31), cross beams (35) are fixedly connected to the ends of both support arms (34), anti-slip pads (36) are fixedly connected to the bottoms of both cross beams (35), limiting arms (37) are arranged on both cross beams (35), a connecting plate (38) is fixedly connected between both support arms (34), and a locking hole (39) is formed in the connecting plate (38).

3. The stable structure for a traction machine according to claim 2, characterized in that: The limiting arm (37) is of a U-shaped structure, the two ear ends of the limiting arm (37) are respectively fixedly connected to the ends of both cross beams (35), and the number of anti-slip pads (36) on each cross beam (35) is the same as the number of steel cable tracks of the traction wheel and is arranged in one-to-one alignment.

4. A stable structure for a traction machine according to claim 3, characterized in that: The installation part (4) includes an inner groove (41), the inner groove (41) is opened on the front side of the end of the base (1), a magnet (42) is installed on the bottom of the inner wall of the inner groove (41), the gasket (31) is slidably connected to the inner wall of the inner groove (41), and the gasket (31) is elastically connected to the bottom of the inner wall of the inner groove (41) through two springs (33).

5. The stable structure for a traction machine according to claim 4, characterized in that: The gasket (31) and the magnet (42) attract each other with opposite polarities, a rod sleeve (5) is fixedly connected to the outer wall of the traction wheel, the sleeve opening of the rod sleeve (5) faces downward, a dial rod (6) is slidably connected to the inner wall of the rod sleeve (5), and a first tension spring is elastically connected between the dial rod (6) and the inner wall of the rod sleeve (5).

6. The stable structure for a traction machine according to claim 5, wherein: The dial plate (32) slidably penetrates through the inner groove (41) and extends to the top of the base (1), the dial plate (32) and the dial rod (6) are arranged in alignment, the end of the dial rod (6) close to the dial plate (32) is of a spherical structure, the top of the dial plate (32) is of an arc surface structure, both support arms (34) slide upward through the inner groove (41), and both support arms (34) are arranged in a staggered manner with the dial plate (32).

7. A stabilizing structure for a traction machine according to claim 3, characterized in that: The emergency response department (7) includes an arc seat (71) which is installed on the outer wall of the gearbox. Two anti - detachment arms (72) are symmetrically installed at the top of the arc seat (71). Each anti - detachment arm (72) is provided with a sliding hole (73) corresponding to the anti - slip pad (36). An emergency rod (74) slides through the middle of the arc seat (71). A limiting plate (75) is fixedly sleeved at the rear end of the emergency rod (74). A baffle plate (76) is installed on the outer arc surface of the arc seat (71). A second tension spring (77) is elastically connected between the baffle plate (76) and the limiting plate (75).

8. The stable structure for a traction machine according to claim 7, wherein: The anti - slip pads (36) on the two cross beams (35) are respectively slidably connected to the inner walls of the corresponding sliding holes (73), and the two anti - detachment arms (72) are in contact with the outer wall of the traction wheel.

9. The stable structure for a traction machine according to claim 7, characterized in that: The top of the limiting plate (75) is a hook - shaped structure. The limiting arm (37) is clamped inside the hook end of the limiting plate (75). A support disc is installed on the inner wall of the traction wheel. The traction wheel is fixedly connected to the output shaft of the gearbox through the support disc. The support disc has a six - support - foot structure. The front end of the emergency rod (74) is a spherical structure, and the emergency rod (74) is aligned with the area between two adjacent support feet on the support disc.

10. A stable structure for a traction machine according to claim 4, characterized in that: The output shaft of the gearbox is rotatably connected to the positioning seat (8). An installation plate is arranged between the positioning seat (8) and the base (1). The positioning seat (8) is installed on the front side of the base (1) through the installation plate and seals the inner groove (41).

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