Two-column elevator with self-locking transmission system

Abstract

The invention relates to a two-column elevator with a self-locking transmission system. The two-column elevator comprises a first supporting column, a vehicle carrying plate, an inclined plate and a second supporting column. The first supporting column is connected with the rear end of the vehicle carrying plate, the vehicle carrying plate is hinged to the left end of the inclined plate, and the second supporting column is arranged at the front end of the vehicle carrying plate. According to the two-column elevator with the self-locking transmission system, when the motor breaks down or is in emergency power failure, due to the fact that the lead angle of the worm is small (generally smaller than the equivalent friction angle), the self-locking performance is achieved, only the worm can drive the worm gear, reverse rotation is prevented, first-weight self-locking is formed, meanwhile, the rotation speed sensor cannot detect rotation of the worm, and the worm can be driven to rotate. When the worm rotates, the electric push rod does contraction motion to drive the ejector rod to move towards the right end, so that the clamping blocks on the multiple clamping block structures are folded and close to each other, the right end of the worm is clamped and locked, rotation of the worm is prevented, double self-locking and double protection are formed, a vehicle carrying plate is prevented from falling, and the use safety of the elevator is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lifting machinery garage, in particular to a two-column elevator with self-locking transmission system. BACKGROUND

[0002] The two-column simple lifting machinery garage is one of the parking equipment widely used at present, which has simple structure and low cost and is suitable for family and small commercial places.

[0003] The traditional two-column elevator usually adopts a chain lifting system, and the lifting of the car plate is realized by driving the chain by the motor, and the motor brake system is relied on to brake during lifting.

[0004] This design has a big defect in safety. When the motor fails or power fails, the chain is dragged in the opposite direction by the gravity of the car plate, and the motor brake cannot provide enough braking force, resulting in the risk of vehicle falling. The reliability of the motor brake system is subject to mechanical wear and working condition fluctuation, and may fail after long-term use. The safety hazard gradually increases due to the aging of the motor. SUMMARY

[0005] (I) Technical problems solved

[0006] To solve the above technical problems, the present application provides a two-column elevator with self-locking transmission system.

[0007] (II) Technical solutions

[0008] Based on this, the present application provides the following technical solutions: a two-column elevator with self-locking transmission system, comprising a support column one, a car plate, an inclined plate, a support column two;

[0009] The support column one is connected with the rear end of the car plate, the car plate is hinged with the left end of the inclined plate, and the front end of the car plate is provided with the support column two.

[0010] The support column one comprises a support frame, a self-locking driving mechanism, a ball screw, a fixed block, a moving seat, a guide wheel set and a receiving frame, the car plate is fixed with the left end of the moving seat, the bottom of the support frame is fixed with the receiving frame, the top of the support frame is fixed with the self-locking driving mechanism, the output end of the self-locking driving mechanism is in transmission connection with the top of the ball screw, the ball nut of the ball screw is embedded in the inside of the fixed block, and the fixed block is fixed with the left end of the moving seat.

[0011] Preferably, the structure of the support column one is consistent with that of the support column two, and the support column one and the support column two are symmetrically distributed, so as to lift the car plate together through the support column one and the support column two, thereby lifting the car plate.

[0012] Preferably, the support frame is composed of two vertical rods, and the two vertical rods are oppositely arranged at the front and back ends of the inside of the receiving frame, the inside of the receiving frame is in a cavity structure, and the support frame, the ball screw, the fixed block, the moving seat and the guide wheel set are all installed in the inside of the receiving frame.

[0013] Preferably, the moving seat is oppositely provided with a guide wheel set at the front and back ends, and the guide wheel set slides along the vertical end of the vertical rod, the vertical rod penetrates the middle part of the guide wheel set, and the guide wheel set and the vertical rod are in sliding fit, thereby guiding the vertical movement of the moving seat.

[0014] Preferably, the self-locking driving mechanism comprises a protection frame, a motor, a worm, a worm wheel, a bevel gear one, a bevel gear two, a pinion, a gear wheel and a locking mechanism, the bottom of the protection frame is fixed with the support frame, the protection frame is bolted with the bottom of the motor, the output end of the motor is in transmission connection with the worm, the worm is in meshing transmission with the rear end of the worm wheel, the worm wheel is in synchronous rotation with the top of the bevel gear one, the bottom of the bevel gear one is movably connected with the protection frame, the bevel gear one is in meshing transmission with the left end of the bevel gear two, the bevel gear two is in synchronous rotation with the bottom of the pinion, the pinion is in meshing transmission with the left end of the gear wheel, the gear wheel is in transmission connection with the top of the ball screw, and the right end of the worm is embedded in the inside of the locking mechanism and movably connected with the inside of the locking mechanism.

[0015] Preferably, the worm is provided with a bearing seat on the left and right sides, and the worm is movably connected with the inside of the bearing seat, thereby facilitating the smooth rotation of the worm.

[0016] Preferably, the locking mechanism comprises a base, a movable seat, an electric push rod, a top rod, a clamping block structure and a rotation speed sensor, the bottom of the base is bolted with the protection frame, the right end of the base is fixed with the movable seat, the right end of the movable seat is embedded with the electric push rod, the right end of the electric push rod is fixed with the top rod, the left end of the movable seat is circumferentially provided with the clamping block structure, and the clamping block structure is fixed with the top of the rotation speed sensor.

[0017] Preferably, the clamping block structure comprises a receiving seat, a telescopic rod, a spring, a clamping block and a movable rod, the left end of the receiving seat is bolted with the movable seat, the right end of the telescopic rod is fixed with the receiving seat, the left end of the receiving seat is movably connected with the clamping block, and the clamping block is movably connected with the inside of the movable seat through the movable rod.

[0018] Preferably, the telescopic rod penetrates the middle part of the spring, the right end of the spring is fixed with the receiving seat, the left end of the spring is fixed with the sliding sleeve of the telescopic rod, and the left end of the clamping block is provided with a movable recess, and the right end of the worm is embedded in the movable recess and movably connected with the inside of the movable recess.

[0019] (Three) beneficial effects

[0020] Compared with the prior art, the two-column elevator with a self-locking transmission system has the following beneficial effects:

[0021] The two-column elevator with a self-locking transmission system has the following beneficial effects: when the motor fails or power is suddenly cut off, the worm has self-locking property due to the small lead angle (usually less than the equivalent friction angle), and can only drive the worm wheel, preventing reverse rotation, forming a first self-locking; at the same time, the rotation speed sensor fails to detect the rotation of the worm, and the electric push rod performs a contraction movement, driving the top rod to move to the right end, so that the clamping blocks on the multi-group clamping block structure are closed and close to each other, clamping and locking the right end of the worm, thereby preventing the rotation of the worm, forming double self-locking, double protection, preventing the car plate from falling, and increasing the safety of the elevator. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the application;

[0023] Figure 2 It is a schematic diagram of the overall structure of the application;

[0024] Figure 3 It is a schematic diagram of the internal structure of the self-locking drive mechanism of the application;

[0025] Figure 4 It is a schematic diagram of the internal structure of the self-locking drive mechanism of the application;

[0026] Figure 5 It is a schematic diagram of the internal structure of the self-locking drive mechanism of the application;

[0027] Figure 6 It is a schematic diagram of the internal structure of the self-locking drive mechanism of the application;

[0028] Figure 7 It is a schematic diagram of the internal structure of the self-locking drive mechanism of the application;

[0029] In the figure: 1, support one, 2, car plate, 3, inclined plate, 4, support two, 11, support frame, 12, self-locking drive mechanism, 13, ball screw, 14, fixed block, 15, moving seat, 16, guide wheel group, 17, receiving frame, 121, protection frame, 122, motor, 123, worm, 124, worm wheel, inclined 125, gear one, 126, helical gear two, 127, pinion, 128, gear, 129, locking mechanism, 1291, base, 1292, movable seat, 1293, electric push rod, 1294, top rod, 1295, clamping block structure, 1296, rotation speed sensor, 12951, receiving seat, 12952, telescopic rod, 12953, spring, 12954, clamping block, 12955, movable rod. DETAILED DESCRIPTION

[0030] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0031] Please refer to Figures 1-2 A two-column elevator with a self-locking transmission system, comprising a support column 1, a vehicle carrying plate 2, an inclined plate 3, and a support column 2 4; the support column 1 is connected to the rear end of the vehicle carrying plate 2, the vehicle carrying plate 2 is hingedly connected to the left end of the inclined plate 3, and the front end of the vehicle carrying plate 2 is provided with the support column 2 4; the support column 1 comprises a support frame 11, a self-locking drive mechanism 12, a ball screw 13, a fixed block 14, a moving seat 15, a guide wheel set 16, and a receiving frame 17; the vehicle carrying plate 2 is fixed to the left end of the moving seat 15, the bottom of the support frame 11 is fixed to the receiving frame 17, the top of the support frame 11 is fixed with the self-locking drive mechanism 12, the output end of the self-locking drive mechanism 12 is in transmission connection with the top of the ball screw 13, and the ball nut of the ball screw 13 is embedded and installed in the inside of the fixed block 14.

[0032] In some embodiments, the structure of the support column 1 is consistent with the structure of the support column 2 4, and the support column 1 and the support column 2 4 are symmetrically distributed, which cooperates with the support column 2 4 to lift the vehicle carrying plate 2, so that the vehicle carrying plate 2 lifts the car driving in, the support frame 11 is composed of two vertical rods, and the two vertical rods are oppositely arranged along the front and rear ends of the inside of the receiving frame 17, the inside of the receiving frame 17 is in a hollow structure, the support frame 11, the ball screw 13, the fixed block 14, the moving seat 15, and the guide wheel set 16 are all installed in the inside of the receiving frame 17, the front and rear ends of the moving seat 15 are oppositely provided with the guide wheel set 16, and the guide wheel set 16 slides along the vertical end of the vertical rod, the vertical rod penetrates the middle part of the guide wheel set 16, and the vertical movement of the moving seat 15 is guided by the sliding cooperation of the guide wheel set 16 and the vertical rod, the bottom of the inclined plate 3 is in contact with the ground, thereby forming a slope, which facilitates the car to drive into the inside of the vehicle carrying plate 2 from the inclined plate 3, the ball screw 13 is a common ball screw, which is a precision transmission element for converting rotary motion into linear motion (or vice versa), and the support column 1 can be provided with a controller, the controller is electrically connected with the motor 122, the rotating speed sensor 1296, and the electric push rod 1293, when the motor 122 is powered off or fails to stop rotating, that is, the rotating speed sensor 1296 fails to detect the rotation of the worm 123, the electric signal is transmitted to the controller by the rotating speed sensor 1296, and the electric push rod 1293 is controlled to work by the controller.

[0033] Please refer to Figures 3-4The two-column elevator with self-locking transmission system, the self-locking drive mechanism 12 comprises a protection frame 121, a motor 122, a worm 123, a worm wheel 124, a bevel gear one 125, a bevel gear two 126, a pinion 127, a gear wheel 128, a locking mechanism 129, the bottom of the protection frame 121 is fixed with the support frame 11, the protection frame 121 is bolted with the bottom of the motor 122, the output end of the motor 122 is in transmission connection with the worm 123, the worm 123 is in meshing transmission with the rear end of the worm wheel 124, the worm wheel 124 is in synchronous rotation with the top of the bevel gear one 125, the bottom of the bevel gear one 125 is in movable connection with the protection frame 121, the bevel gear one 125 is in meshing transmission with the left end of the bevel gear two 126, the bevel gear two 126 is in synchronous rotation with the bottom of the pinion 127, the pinion 127 is in meshing transmission with the left end of the gear wheel 128, the gear wheel 128 is in transmission connection with the top of the ball screw 13, and the right end of the worm 123 is embedded in the inner side of the locking mechanism 129 and is in movable connection with the inner side of the locking mechanism 129.

[0034] In some embodiments, the left and right sides of the worm 123 are provided with bearing seats, the worm 123 is movably connected with the inner side of the bearing seat, so as to facilitate the stable rotation of the worm 123, and the motor 122 is a common motor, i.e. an electric motor or an engine. The working principle is that the motor 122 is driven to rotate in the magnetic field through the power winding, the worm 123 is driven to rotate the worm wheel 124, the worm 123 is prevented from being reversely rotated, the tooth surface of the bevel gear is inclined at a spiral angle with respect to the axis, the tooth profile is composed of a gradual curve surface, the contact line gradually expands from a point to a surface during meshing, gradual meshing is formed, the contact line continuously changes during meshing, impact and vibration are reduced, the gear wheel 128 is driven to rotate by the pinion 127, the rotation speed of the gear wheel 128 is significantly reduced, the output torque is increased according to the transmission ratio, so that the high-speed low-torque input can be converted into low-speed high-torque output, and the ball screw 13 is driven to rotate stably.

[0035] Please refer to Figures 5-7The locking mechanism 129 comprises a base 1291, a movable seat 1292, an electric push rod 1293, a top rod 1294, a clamping block structure 1295 and a rotating speed sensor 1296. The bottom of the base 1291 is bolted to the protection frame 121. The base 1291 is fixed to the right end of the movable seat 1292. The electric push rod 1293 is embedded in the right end of the movable seat 1292. The right end of the electric push rod 1293 is fixed to the top rod 1294. The left end of the movable seat 1292 is circumferentially provided with the clamping block structure 1295. The clamping block structure 1295 is fixed to the top of the rotating speed sensor 1296. The clamping block structure 1295 comprises a receiving seat 12951, an extension rod 12952, a spring 12953, a clamping block 12954 and a movable rod 12955. The left end of the receiving seat 12951 is bolted to the movable seat 1292. The right end of the extension rod 12952 is fixed to the receiving seat 12951. The left end of the receiving seat 12951 is movably connected to the clamping block 12954. The clamping block 12954 is movably connected to the inner side of the movable seat 1292 through the movable rod 12955.

[0036] In some embodiments, the extension rod 12952 penetrates the middle part of the spring 12953. The right end of the spring 12953 is fixed to the receiving seat 12951. The left end of the spring 12953 is fixed to the sliding sleeve of the extension rod 12952. The left end of the clamping block 12954 is provided with a movable groove. The right end of the worm 123 is embedded in the movable groove and movably connected to the inner side of the movable groove. The electric push rod 1293 is a common electric push rod, also known as a linear actuator. It mainly comprises a motor push rod and a control device and other mechanisms. It can be considered as an extension of the rotating motor in structure. The right end of the clamping block 12954 is provided with a slope surface which gradually inclines from left to right. The slope surface is away from the end wall of the top rod 1294.

[0037] In summary, in use, the two-column elevator with self-locking transmission system is placed in a suitable position in the family and small commercial places.

[0038] Subsequently, the automobile can drive into the inside of the vehicle loading plate 2 from the inclined plate 3. Next, the motor 122 drives the worm 123 to rotate. The worm 123 drives the bevel gear one 125 to synchronously rotate through the worm gear 124. The bevel gear one 125 drives the pinion 127 to rotate through the bevel gear two 126. The pinion 127 drives the ball screw 13 to rotate through the gear wheel 128.

[0039] In the process of rotating the ball screw 13, the screw nut drives the fixed block 14 to move upwards along the screw, and the fixed block 14 slides on the support frame 11 through the guide wheel set 16, thereby lifting the car plate 2 and storing the car at a high position, and another car can be parked at the bottom of the car plate 2, thus increasing the number of parked cars;

[0040] And when the motor 122 fails or the power is suddenly cut off, due to the worm 123 and the worm gear 124, the worm 123 has a small lead angle (usually smaller than the equivalent friction angle), which has self-locking property, and only the worm 123 can drive the worm gear 124, preventing reverse rotation, forming the first heavy self-locking, and the rotation speed sensor 1296 fails to detect the rotation of the worm 123, and the rotation speed sensor 1296 transmits an electrical signal to the controller, and the controller controls the electric push rod 1293 to perform a contraction movement, driving the jack 1294 to move to the right end, when the jack 1294 moves to the right end, the clamping block 12954 is released from the jacking force, and the spring 12953 restores the elastic potential energy of the deformation, driving the clamping block 12954 to swing around the movable rod 12955, so that the clamping blocks 12954 on the multiple clamping block structures 1295 are closed and close to each other, clamping and locking the right end of the worm 123, thereby preventing the rotation of the worm 123, forming double self-locking, double protection, preventing the car plate 2 from falling, and increasing the safety of the elevator.

[0041] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A two-column elevator having a self-locking drive system, characterized by: It includes the prop one (1), the car plate (2), the inclined plate (3), the prop two (4); The prop one (1) is connected with the rear end of the car plate (2), the car plate (2) is hinged with the left end of the inclined plate (3), and the front end of the car plate (2) is provided with the prop two (4); The prop one (1) includes support frame (11), self-locking drive mechanism (12), ball screw (13), fixed block (14), moving seat (15), guide wheel group (16), receiving frame (17), the left end of the car plate (2) is fixed with the moving seat (15), the bottom of the support frame (11) is fixed with the receiving frame (17), the top of the support frame (11) is fixed with the self-locking drive mechanism (12), the output end of the self-locking drive mechanism (12) is drivingly connected with the top of the ball screw (13), the ball nut of the ball screw (13) is embeddedly installed in the inside of the fixed block (14), and the left end of the fixed block (14) is fixed with the moving seat (15).

2. A two-post lift having a self-locking drive system as defined in claim 1, characterized in that: The structure of the prop one (1) is consistent with the structure of the prop two (4), and the prop one (1) and the prop two (4) are symmetrically distributed.

3. A two-post lift having a self-locking drive system as defined in claim 1, wherein: The support frame (11) is composed of two vertical rods, and the two vertical rods are oppositely arranged along the inside of the receiving frame (17), and the inside of the receiving frame (17) is in a cavity structure.

4. A two-post lift having a self-locking drive system as defined in claim 3, wherein: The front and rear ends of the moving seat (15) are oppositely provided with the guide wheel group (16), and the guide wheel group (16) slides along the vertical end of the vertical rod, and the vertical rod penetrates the middle part of the guide wheel group (16).

5. A two-post lift having a self-locking drive system as defined in claim 1, wherein: The self-locking drive mechanism (12) includes protection frame (121), motor (122), worm (123), worm gear (124), bevel gear one (125), bevel gear two (126), pinion (127), gear wheel (128), locking mechanism (129), the bottom of the protection frame (121) is fixed with the support frame (11), the protection frame (121) is bolted with the bottom of the motor (122), the output end of the motor (122) is drivingly connected with the worm (123), the worm (123) is meshingly drivingly connected with the rear end of the worm gear (124), the worm gear (124) is synchronously rotated with the top of the bevel gear one (125), the bottom of the bevel gear one (125) is movably connected with the protection frame (121), the bevel gear one (125) is meshingly drivingly connected with the left end of the bevel gear two (126), the bevel gear two (126) is synchronously rotated with the bottom of the pinion (127), the pinion (127) is meshingly drivingly connected with the left end of the gear wheel (128), the gear wheel (128) is drivingly connected with the top of the ball screw (13), and the right end of the worm (123) is embedded in the inside of the locking mechanism (129) and movably connected with the inside of the locking mechanism (129).

6. A two-post lift having a self-locking drive system as defined in claim 5, wherein: The left and right sides of the worm (123) are provided with bearing seats, and the worm (123) is movably connected with the inside of the bearing seat.

7. A two-post lift having a self-locking drive system as defined in claim 5, wherein: The locking mechanism (129) comprises a base (1291), a movable seat (1292), an electric push rod (1293), a top rod (1294), a clamping block structure (1295), and a rotating speed sensor (1296), the bottom of the base (1291) is bolted with the protection frame (121), the base (1291) is fixed with the right end of the movable seat (1292), the right end of the movable seat (1292) is embedded with the electric push rod (1293), the right end of the electric push rod (1293) is fixed with the top rod (1294), the left end of the movable seat (1292) is circumferentially distributed with the clamping block structure (1295), and the clamping block structure (1295) is fixed with the top of the rotating speed sensor (1296).

8. A two-post lift having a self-locking drive system as defined in claim 7, wherein: The clamping block structure (1295) comprises a receiving seat (12951), an extension rod (12952), a spring (12953), a clamping block (12954), and a movable rod (12955), the left end of the receiving seat (12951) is bolted with the movable seat (1292), the right end of the extension rod (12952) is fixed with the receiving seat (12951), the left end of the receiving seat (12951) is movably connected with the clamping block (12954), and the clamping block (12954) is movably connected with the inner side of the movable seat (1292) through the movable rod (12955).

9. A two-post lift having a self-locking drive system as defined in claim 8, wherein: The extension rod (12952) penetrates the middle part of the spring (12953), the right end of the spring (12953) is fixed with the receiving seat (12951), and the left end of the spring (12953) is fixed with the sliding sleeve of the extension rod (12952).

10. A two-post lift having a self-locking drive system as defined in claim 8, wherein: The left end of the clamping block (12954) is provided with a movable recess.

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