Buffer structure for elevator door motor

Abstract

The utility model relates to the technical field of elevator door motors, and discloses a buffer structure for an elevator door motor, which comprises a main body mechanism, a driving mechanism and a protection mechanism, the driving mechanism is positioned in the main body mechanism, and the protection mechanism is positioned in the main body mechanism; the main body mechanism comprises a door machine outer cover, a mounting plate is fixedly connected to the top end of the door machine outer cover, and a protective shell is fixedly connected to the inner wall of the door machine outer cover. Through the arrangement of the first damping spring, when the driving mechanism drives the left door knife assembly and the right door knife assembly to move towards the two sides of the door machine outer cover and extrudes a rubber plate, a connecting plate on the rubber plate slides in a groove, meanwhile, a rotating plate rotates in a rotating bottom plate, and a sliding block moves in the linear direction of a connecting rod; and the impact force among the left door knife assembly, the right door knife assembly and the rubber plate is relieved through the elastic force of the first damping spring, and the buffering effect of the structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator door machines, in particular to a buffer structure for an elevator door machine. Background Art

[0002] An elevator door machine is a mechanism that drives the opening and closing of an elevator car door. It mainly drives a door hanging plate to move linearly along a guide rail through the cooperation of a driving unit and a door knife assembly, thereby realizing the opening and closing of the elevator car door. The motor in the driving unit drives a synchronous belt to rotate to drive the door knife assembly to make a linear reciprocating motion along with the synchronous belt (the synchronous belt rotates forward and backward). The door knife assembly is fixedly connected to the door hanging plate, and the movement of the door knife assembly drives the door hanging plate to move linearly along the guide rail.

[0003] According to the elevator door machine with the publication number CN209210154U, it includes a door machine outer cover with a square structure and two elevator door hanging plates slidably arranged inside the door machine outer cover. The two elevator door hanging plates are connected by a wire rope (the wire rope is not shown in the figure) and adopt a side-opening structure to open and close the car door. A driving unit for driving the elevator door hanging plate to slide is arranged at the top wall of the door machine outer cover. The driving unit includes a motor and a synchronous belt group arranged inside the door machine outer cover. Two guide rails are horizontally arranged between the two side walls of the door machine outer cover, and the two elevator door hanging plates are respectively slidably arranged on the corresponding guide rails. The driving unit directly drives the door knife assembly to move horizontally. The movement of the door knife assembly drives the elevator door hanging plate connected thereto to slide along the guide rail, and drives the other elevator door hanging plate to slide along the same side of the guide rail through the wire rope, so as to achieve the purpose of driving the two elevator door hanging plates to move sidewise.

[0004] Through the above driving unit, the door knife assembly can be driven to move horizontally. However, when the door knife assembly moves, since there is no buffer component in the door machine outer cover, it is easy to cause the door knife assembly to collide with the door machine outer cover, resulting in damage to the door knife assembly and affecting the normal use of the elevator. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a buffer structure for an elevator door machine.

[0006] The utility model is realized by adopting the following technical solutions: A buffer structure for an elevator door machine includes a main body mechanism, a driving mechanism, and a protection mechanism. The driving mechanism is located inside the main body mechanism, and the protection mechanism is located inside the main body mechanism;

[0007] The main body mechanism includes a door machine outer cover. The top of the door machine outer cover is fixedly connected with a mounting plate. The inner wall of the door machine outer cover is fixedly connected with a protective shell. A groove is formed on one side of the protective shell away from the door machine outer cover. The inner wall of the protective shell is fixedly connected with a fixing block. A connecting rod is fixedly connected to the middle of the fixing block. A first shock-absorbing spring is arranged on the surface of the connecting rod. A sliding block is slidably connected to the surface of the connecting rod. A rotating plate is rotatably connected to the middle of the sliding block. A rotating bottom plate is rotatably connected to the surface of the rotating plate. A rubber plate is fixedly connected to one side of the rotating bottom plate away from the connecting rod.

[0008] Through the above technical solution, the left door knife assembly and the right door knife assembly squeeze the rubber plate. At the same time, the rotating plate rotates in the rotating bottom plate, causing the sliding block to move along the straight line direction of the connecting rod and squeezing the first shock-absorbing spring. The impact force is slowed down by the elastic force of the first shock-absorbing spring, increasing the buffering effect of the structure.

[0009] As a further improvement of the above solution, the first shock-absorbing spring is located between the fixing block and the sliding block. Rotating rods are arranged between the rotating plate and the sliding block, and between the rotating plate and the rotating bottom plate.

[0010] As a further improvement of the above solution, the driving mechanism includes a driving motor. The driving motor is fixedly connected to the top of the door machine outer cover. The output end of the driving motor is fixedly connected with a driving wheel. A belt is arranged on the surface of the driving wheel. A driven wheel is arranged inside the belt. A first rotating shaft is fixedly connected to the inner wall of the driven wheel. A driving gear is fixedly connected to the surface of the first rotating shaft. A driving rack is meshed with the surface of the driving gear. A driven gear is meshed with the inner wall of the driving rack. A second rotating shaft is fixedly connected to the inner wall of the driven gear.

[0011] Through the above technical solution, when the driving motor is started, the driving wheel rotates under its drive, and the power is transmitted to the driven wheel through the belt. The first rotating shaft rotates to drive the driving gear to rotate, and drives the driven gear to rotate through the driving rack. While the driving gear moves, the left door knife assembly and the right door knife assembly slide in the sliding groove, thereby controlling the opening and closing of the elevator door and improving the convenience of elevator door control.

[0012] As a further improvement of the above solution, the driving motor and the driving wheel are located above the door machine outer cover. The first rotating shaft and the second rotating shaft are rotatably connected to the inner wall of the door machine outer cover.

[0013] As a further improvement of the above solution, the protection mechanism includes a left door knife assembly fixedly connected to the surface of the transmission rack. A left backing plate is fixedly connected to the front of the left door knife assembly. A right door knife assembly is fixedly connected to the surface of the transmission rack. A right backing plate is fixedly connected to the front of the right door knife assembly. A chute is formed at the bottom of the door machine housing. A partition plate is fixedly connected to the inner wall of the door machine housing. A second shock-absorbing spring is fixedly connected to the inner wall of the partition plate. One side of the second shock-absorbing spring away from the partition plate is fixedly connected to a buffer plate. A guide rod is fixedly connected to the side of the buffer plate close to the partition plate.

[0014] As a further improvement of the above solution, the left door knife assembly and the right door knife assembly are located in the middle of the chute.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] By setting the first shock-absorbing spring in the present utility model, when the driving mechanism drives the left door knife assembly and the right door knife assembly to move towards both sides of the door machine housing, the left door knife assembly and the right door knife assembly squeeze the rubber plate, causing the connecting plate on the rubber plate to slide in the groove. At the same time, the rotating plate rotates in the rotating bottom plate, causing the sliding block to move along the linear direction of the connecting rod and squeezing the first shock-absorbing spring. The elastic force of the first shock-absorbing spring slows down the impact force between the left door knife assembly, the right door knife assembly and the rubber plate, increasing the buffering effect of the structure.

[0017] By setting the driving motor in the present utility model, when the driving motor is started, the driving wheel starts to rotate under its drive, and the power is transmitted to the driven wheel through the belt. The first rotating shaft rotates to drive the driving gear to rotate, and drives the driven gear to rotate through the transmission rack. While the transmission rack is moving, the left door knife assembly and the right door knife assembly slide in the chute, thereby controlling the opening and closing of the elevator door and improving the convenience of elevator door control. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is the present utility model Figure 1 is an enlarged schematic diagram of the structure at A in

[0020] Figure 3 is a schematic sectional view of the partition plate of the present utility model;

[0021] Figure 4 is a schematic sectional view of the protective housing of the present utility model.

[0022] MAIN SYMBOL DESCRIPTION:

[0023] Main body mechanism; 101, door machine housing; 102, mounting plate; 103, protective housing; 104, groove; 105, fixing block; 106, connecting rod; 107, first shock-absorbing spring; 108, sliding block; 109, rotating plate; 110, rotating bottom plate; 111, rubber plate; 2, driving mechanism; 201, driving motor; 202, driving wheel; 203, belt; 204, driven wheel; 205, first rotating shaft; 206, driving gear; 207, transmission rack; 208, driven gear; 209, second rotating shaft; 3, protection mechanism; 301, left door knife assembly; 302, left backing plate; 303, right door knife assembly; 304, right backing plate; 305, chute; 306, partition plate; 307, second shock-absorbing spring; 308, buffer plate; 309, guide rod. Detailed implementation manners

[0024] Next, in combination with the accompanying drawings and the detailed implementation manners, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments. Embodiment

[0025] Please refer to Figures 1-4 , a buffer structure for an elevator door machine in this embodiment includes a main body mechanism 1, a driving mechanism 2 and a protection mechanism 3. The driving mechanism 2 is located inside the main body mechanism 1, and the protection mechanism 3 is located inside the main body mechanism 1;

[0026] The main body mechanism 1 includes a door machine housing 101. The top end of the door machine housing 101 is fixedly connected with a mounting plate 102. The inner wall of the door machine housing 101 is fixedly connected with a protective housing 103. A groove 104 is opened on one side of the protective housing 103 away from the door machine housing 101. The inner wall of the protective housing 103 is fixedly connected with a fixing block 105. The middle part of the fixing block 105 is fixedly connected with a connecting rod 106. A first shock-absorbing spring 107 is arranged on the surface of the connecting rod 106. A sliding block 108 is slidably connected to the surface of the connecting rod 106. The middle part of the sliding block 108 is rotatably connected with a rotating plate 109. The surface of the rotating plate 109 is rotatably connected with a rotating bottom plate 110. The side of the rotating bottom plate 110 away from the connecting rod 106 is fixedly connected with a rubber plate 111.

[0027] The first shock-absorbing spring 107 is located between the fixing block 105 and the sliding block 108. A rotating rod is arranged between the rotating plate 109 and the sliding block 108 and the rotating bottom plate 110.

[0028] The driving mechanism 2 includes a driving motor 201 which is fixedly connected to the top end of the door machine housing 101. A driving wheel 202 is fixedly connected to the output end of the driving motor 201. A belt 203 is arranged on the surface of the driving wheel 202. A driven wheel 204 is arranged inside the belt 203. A first rotating shaft 205 is fixedly connected to the inner wall of the driven wheel 204. A driving gear 206 is fixedly connected to the surface of the first rotating shaft 205. A transmission rack 207 is meshed with the surface of the driving gear 206. A driven gear 208 is meshed with the inner wall of the transmission rack 207. A second rotating shaft 209 is fixedly connected to the inner wall of the driven gear 208.

[0029] The driving motor 201 and the driving wheel 202 are located above the door machine housing 101. The first rotating shaft 205 and the second rotating shaft 209 are rotatably connected to the inner wall of the door machine housing 101.

[0030] The protection mechanism 3 includes a left door knife assembly 301 which is fixedly connected to the surface of the transmission rack 207. A left backing plate 302 is fixedly connected to the front of the left door knife assembly 301. A right door knife assembly 303 is fixedly connected to the surface of the transmission rack 207. A right backing plate 304 is fixedly connected to the front of the right door knife assembly 303. A sliding groove 305 is formed at the bottom of the door machine housing 101. A partition plate 306 is fixedly connected to the inner wall of the door machine housing 101. A second shock-absorbing spring 307 is fixedly connected to the inner wall of the partition plate 306. A buffer plate 308 is fixedly connected to the side of the second shock-absorbing spring 307 away from the partition plate 306. A guide rod 309 is fixedly connected to the side of the buffer plate 308 close to the partition plate 306.

[0031] The left door knife assembly 301 and the right door knife assembly 303 are located in the middle of the sliding groove 305.

[0032] The implementation principle of a buffer structure for an elevator door machine in the embodiment of the present application is as follows:

[0033] Start the drive motor 201. Driven by it, the driving wheel 202 starts to rotate, and transmits power to the driven wheel 204 through the belt 203. The first rotating shaft 205 rotates to drive the driving gear 206 to rotate, and drives the driven gear 208 to rotate through the transmission rack 207. While the transmission rack 207 moves, the left door knife assembly 301 and the right door knife assembly 303 slide in the chute 305, thereby controlling the opening and closing of the elevator door. When the driving mechanism 2 drives the left door knife assembly 301 and the right door knife assembly 303 to move to both sides of the door machine housing 101, the left door knife assembly 301 and the right door knife assembly 303 squeeze the rubber plate 111, causing the connecting plate on the rubber plate 111 to slide in the groove 104. At the same time, the rotating plate 109 rotates in the rotating bottom plate 110, causing the sliding block 108 to move along the linear direction of the connecting rod 106 and squeeze the first shock-absorbing spring 107. The elastic force of the first shock-absorbing spring 107 reduces the impact force between the left door knife assembly 301, the right door knife assembly 303 and the rubber plate 111. When the left door knife assembly 301 and the right door knife assembly 303 approach the partition plate 306, the left cushion plate 302 and the right cushion plate 304 are inserted into the through grooves on both sides of the partition plate 306 and squeeze the buffer plate 308, causing the second shock-absorbing spring 307 to contract. The elasticity of the second shock-absorbing spring 307 buffers the left door knife assembly 301 and the right door knife assembly 303, increasing the protection effect on the elevator door.

[0034] The above embodiments are only the preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of protection required by the present invention.

Claims

1. A buffer structure for an elevator door machine, characterized in that, It includes a main body mechanism (1), a driving mechanism (2) and a protection mechanism (3). The driving mechanism (2) is located inside the main body mechanism (1), and the protection mechanism (3) is located inside the main body mechanism (1). The main body mechanism (1) includes a door machine outer cover (101). The top of the door machine outer cover (101) is fixedly connected with a mounting plate (102). The inner wall of the door machine outer cover (101) is fixedly connected with a protection outer shell (103). A groove (104) is formed on the side of the protection outer shell (103) away from the door machine outer cover (101). The inner wall of the protection outer shell (103) is fixedly connected with a fixing block (105). The middle of the fixing block (105) is fixedly connected with a connecting rod (106). A first shock-absorbing spring (107) is arranged on the surface of the connecting rod (106). A sliding block (108) is slidably connected to the surface of the connecting rod (106). The middle of the sliding block (108) is rotatably connected with a rotating plate (109). The surface of the rotating plate (109) is rotatably connected with a rotating bottom plate (110). A rubber plate (111) is fixedly connected to the side of the rotating bottom plate (110) away from the connecting rod (106).

2. The buffer structure for an elevator door machine according to claim 1, characterized in that: The first shock-absorbing spring (107) is located between the fixing block (105) and the sliding block (108). Rotating rods are arranged between the rotating plate (109) and the sliding block (108) and the rotating bottom plate (110).

3. The buffer structure for an elevator door machine according to claim 1, characterized in that: The driving mechanism (2) includes a driving motor (201). The driving motor (201) is fixedly connected to the top of the door machine outer cover (101). The output end of the driving motor (201) is fixedly connected with a driving wheel (202). A belt (203) is arranged on the surface of the driving wheel (202). A driven wheel (204) is arranged inside the belt (203). The inner wall of the driven wheel (204) is fixedly connected with a first rotating shaft (205). A driving gear (206) is fixedly connected to the surface of the first rotating shaft (205). A driving rack (207) is engaged with the surface of the driving gear (206). A driven gear (208) is engaged with the inner wall of the driving rack (207). The inner wall of the driven gear (208) is fixedly connected with a second rotating shaft (209).

4. The buffer structure for an elevator door machine according to claim 3, characterized in that: The driving motor (201) and the driving wheel (202) are located above the door machine outer cover (101). The first rotating shaft (205) and the second rotating shaft (209) are rotatably connected to the inner wall of the door machine outer cover (101).

5. The buffer structure for an elevator door machine according to claim 1, wherein: The protection mechanism (3) includes a left door knife assembly (301), the left door knife assembly (301) is fixedly connected to the surface of the transmission rack (207), a left backing plate (302) is fixedly connected to the front surface of the left door knife assembly (301), a right door knife assembly (303) is fixedly connected to the surface of the transmission rack (207), a right backing plate (304) is fixedly connected to the front surface of the right door knife assembly (303), a chute (305) is formed at the bottom of the door machine housing (101), a partition plate (306) is fixedly connected to the inner wall of the door machine housing (101), a second shock-absorbing spring (307) is fixedly connected to the inner wall of the partition plate (306), a buffer plate (308) is fixedly connected to the side of the second shock-absorbing spring (307) away from the partition plate (306), and a guide rod (309) is fixedly connected to the side of the buffer plate (308) close to the partition plate (306).

6. The buffer structure for an elevator door machine according to claim 5, characterized in that: The left door knife assembly (301) and the right door knife assembly (303) are located in the middle of the chute (305).

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