Self-locking structure of a new type of DC brushless barrier gate

Abstract

The present invention relates to the technical field of barrier gates, and specifically relates to a self-locking structure of a new type of DC brushless barrier gate, including a chassis, a motor, a transmission mechanism, a balance mechanism, and a barrier rod. A support plate is fixedly arranged inside the chassis. The short end of the barrier rod is connected to the outer wall of the chassis through a rotating shaft. The transmission mechanism includes a main shaft. A lock hole is formed on the outer wall of the barrier rod facing the chassis. Further included is an anti-lifting self-locking assembly arranged on the top of the support plate. The anti-lifting self-locking assembly includes a clutch mechanism, a horizontal movement mechanism, a commutation mechanism, a lock rod, and a support base. The clutch mechanism includes a driving disc and a transmission disc. The horizontal movement mechanism includes a slider. The barrier gate equipped with this device can lock the barrier rod through the lock rod after the barrier rod is placed horizontally, and when the barrier rod is in a locked state, the power transmission between the clutch mechanism and the motor will be cut off, which not only effectively prevents the situation of manual lifting of the rod, but also improves the service life of the motor and the transmission mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of barrier gates, and particularly to a self-locking structure of a new type of DC brushless barrier gate. Background Art

[0002] A barrier gate, also known as a vehicle stopper, is a management device specifically used for restricting the passage of motor vehicles at the entrances and exits of roads. It is now widely used in highway toll stations and parking lot systems to manage vehicle passages for vehicle entry and exit. The barrier gate consists of a speed reducer, a motor, a transmission mechanism, a balancing device, a machine box, a gate rod bracket, a gate rod, etc. The electric barrier gate can be lifted and lowered independently through wireless remote control, or it can be in an automatic management state through a parking lot management system (i.e., an IC card swiping management system). When a vehicle enters, it takes a card and the vehicle is released. When leaving, the vehicle is automatically released after the parking fee is collected.

[0003] Some entrances and exits equipped with barrier gates are only used to temporarily block the current road section to prevent motor vehicles from entering and exiting. At this time, there may be a situation where the motor vehicle tries to enter forcefully, and the gate rod is lifted manually to release the vehicle. In the existing barrier gate, the gate rod is only indirectly connected to the output shaft of the motor through the transmission mechanism. Therefore, the gate rod can be easily lifted manually. Thus, the traditional barrier gate fails to play the basic role of restricting the entry and exit of motor vehicles. Moreover, when the gate rod is lifted manually, the gate rod will overcome the torque at the output end of the motor. In the long run, this will reduce the service life of the motor and the transmission mechanism. Therefore, in order to prevent the situation of manual lifting of the gate rod and to improve the service life of the motor and the transmission mechanism, it is necessary to provide a self-locking structure of a new type of DC brushless barrier gate to solve the above problems. Summary of the Invention

[0004] Based on this, it is necessary to provide a self-locking structure of a new type of DC brushless barrier gate for the problems in the prior art.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is: a new self-locking structure of a DC brushless barrier, including a chassis, a motor, a transmission mechanism, a balancing mechanism and a gate rod, a horizontal support plate is fixedly provided in the chassis, the motor is fixedly provided at the bottom of the support plate, the short end of the gate rod is connected to the outer wall of the chassis through a rotating shaft, the transmission mechanism includes a main shaft provided at the top of the support plate and used to drive the rotating shaft to rotate, a lock hole is provided on the outer wall of the gate rod facing the chassis, and also includes an anti-lifting self-locking component provided at the top of the support plate, the anti-lifting self-locking component includes a clutch mechanism, a horizontal movement mechanism, a reversing mechanism, a locking rod and a bracket, the clutch mechanism is used to cut off and engage the power transmission between the main shaft and the rotating shaft, the clutch mechanism includes a driving disk and a transmission disk that can be engaged with each other, and the driving disk slides It is arranged on the main shaft, the transmission disk is connected to the rotating shaft, the horizontal moving mechanism is arranged beside the clutch mechanism, the horizontal moving mechanism includes a slider, the slider is used to drive the driving disk to slide on the main shaft, so as to realize the engagement and separation of the driving disk and the transmission disk, the bracket is arranged on the outer wall of the chassis, the bracket is used to support the horizontally placed gate rod, the reversing mechanism is arranged beside the horizontal moving mechanism, the reversing mechanism has two output ends that can be synchronously displaced horizontally toward or away from each other, the slider is connected to one of the output ends of the reversing mechanism, and the locking rod is connected to the other output end of the reversing mechanism. When the slider drives the driving disk to separate from the transmission disk, the reversing mechanism is used to make the locking rod gradually rotate to the horizontal gate rod displacement, and finally the locking rod is horizontally inserted into the lock hole to lock the already horizontal gate rod.

[0006] Furthermore, the transmission disk is a conical sleeve, and the driving disk is a conical body embedded with the conical sleeve. The inner circumferential wall of the transmission disk is formed with a plurality of strip blocks evenly distributed along the circumferential direction of the transmission disk, and the outer circumferential wall of the conical body is formed with a plurality of strip slots for inserting the strip blocks. A cylindrical sleeve is coaxially formed on the side of the driving disk away from the transmission disk and is sleeved on the main shaft. A plurality of limit strips evenly distributed along the circumferential direction of the cylindrical sleeve are formed on the inner wall of one end of the cylindrical sleeve close to the driving disk, and a plurality of limit grooves for inserting the limit strips are provided on one end of the main shaft. Retaining rings respectively close to the two ends of the cylindrical sleeve are formed on the outer wall of the cylindrical sleeve, and a movable ring located between the two retaining rings is sleeved on the cylindrical sleeve, and the movable ring is connected to the slider through a No. 1 connecting rod.

[0007] Furthermore, an elastic member is provided between the transmission disk and the rotating shaft, and the elastic member includes a fixed sleeve, a No. 1 spring and a sliding pin. One end of the fixed sleeve is an open structure and is coaxially fixedly connected to the rotating shaft, and the other end of the fixed sleeve is coaxially formed with a circular ring. One end of the sliding pin is a columnar head that slides in the fixed sleeve, and the other end of the sliding pin is a columnar rod that horizontally passes through the center of the circular ring. The transmission disk is coaxially fixedly connected to the protruding end of the columnar rod, and the No. 1 spring is arranged in the fixed sleeve. The two ends of the No. 1 spring respectively conflict with the ends of the columnar sleeve and the rotating shaft. By sliding the columnar head in the fixed sleeve, the transmission disk can only be displaced along its axial direction, and each strip block is formed with an arc-shaped guide surface on one end facing the drive disk.

[0008] Further, the horizontal movement mechanism further includes a lead screw, a limit rod, and a shaft seat. The shaft seat is fixed to the top of the support plate. The lead screw is parallel to the main shaft, and one end of the lead screw is coaxially connected to the shaft seat. The number of limit rods is two, and the two limit rods are symmetrically fixed on both sides of the lead screw respectively. Each limit rod is parallel to the lead screw. The slider is sleeved on the lead screw, and the middle part of the slider is in threaded cooperation with the lead screw. The two ends of the slider slide on the two limit rods respectively. A first gear is coaxially fixed to the end of the lead screw away from the shaft seat, and a second gear meshing with the first gear is coaxially fixed to the main shaft. A safety clutch for preventing the slider from hitting the shaft seat after sliding to the limit is provided at the bottom of the slider.

[0009] Further, the slider includes a rotating cylinder and a sliding seat. A columnar through groove coaxial with the lead screw is formed in the sliding seat. The rotating cylinder is coaxially inserted into the columnar through groove. The inner wall of the rotating cylinder is in threaded cooperation with the lead screw. An insertion hole is formed on the outer wall of the rotating cylinder. The two ends of the sliding seat slide on the two limit rods respectively. The two ends of the first connecting rod are connected to the sliding seat and the movable ring respectively. The safety clutch includes a vertical sleeve, a pin, a second spring, and a telescopic rod. The vertical sleeve is fixed to the bottom of the sliding seat. The pin is vertically arranged in the vertical sleeve. The lower end of the pin slides in the vertical sleeve. The upper end of the pin passes through the sliding seat upward and is inserted into the insertion hole. The second spring is arranged in the vertical sleeve. The upper and lower ends of the second spring respectively abut against the lower end of the pin and the bottom inner wall of the vertical sleeve. A vertically arranged strip-shaped through groove is formed on the peripheral wall of the vertical sleeve. A wedge block horizontally protruding out of the strip-shaped through groove is formed at the lower end of the pin. The telescopic rod is horizontally arranged beside the shaft seat. A wedge surface cooperating with the wedge block is formed at the end of the telescopic rod facing the slider. Thus, the pin is driven to move downward by the telescopic rod abutting against the wedge block.

[0010] Further, the reversing mechanism includes a central gear arranged on the top of the support plate and two racks distributed at 180° along the circumferential direction of the central gear. The axis of the central gear is vertical. Each rack is horizontally slidably connected to the top of the support plate and meshes with the central gear. The two racks are respectively the two output ends of the reversing mechanism. Among them, the sliding seat is fixedly connected to one of the racks through a second connecting rod, and the locking rod is fixedly connected to the other rack.

[0011] Further, a circular groove is formed on each of the two sides of the movable ring, and a rotating ring is arranged in each circular groove.

[0012] Further, the number of locking rods and locking holes is several. Each locking rod is horizontally fixedly connected to the corresponding rack, and several long shaft sleeves corresponding to the locking rods one by one are fixedly arranged on the inner wall of the chassis. Each locking rod can be horizontally inserted into the corresponding long shaft sleeve.

[0013] The beneficial effects of the present invention compared with the prior art are:

[0014] First, when the gate bar of the device is placed horizontally, it can be locked by the locking rod, and when the gate bar is in the locked state, the power transmission between the clutch mechanism and the motor is cut off, which not only effectively prevents the situation of manual lifting of the gate bar, but also improves the service life of the motor and the transmission mechanism;

[0015] Second, during the process of the driving disk in the clutch mechanism being engaged with the driving disk, it can elastically retreat through the elastic member, further preventing the damage to the driving disk and the driving disk caused by gear jamming;

[0016] Third, when the gate bar is manually lifted, each locking rod will be limited by the corresponding long shaft sleeve, and the long shaft sleeve is used to increase the stress surface of the locking rod, thereby improving the strength of the locking rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the embodiment;

[0018] Figure 2 is a three-dimensional structural schematic diagram of the anti-lifting self-locking assembly when the gate bar is horizontal;

[0019] Figure 3 is Figure 2 a partial enlarged schematic diagram indicated by A1 in

[0020] Figure 4 is Figure 3 a partial enlarged schematic diagram indicated by A2 in

[0021] Figure 5 is a three-dimensional structural schematic diagram of the anti-lifting self-locking assembly when the gate bar is vertical;

[0022] Figure 6 is a top view of the slider of the embodiment;

[0023] Figure 7 is Figure 6 a cross-sectional view taken along the line A-A;

[0024] Figure 8 is an exploded three-dimensional structural diagram of the slider of the embodiment;

[0025] Figure 9 is an exploded three-dimensional structural diagram of the driving disk, the main shaft and the movable ring of the embodiment;

[0026] Figure 10 is a three-dimensional structural schematic diagram of the driving disk of the embodiment;

[0027] Figure 11 is an exploded three-dimensional structural diagram of the driving disk, the elastic member and the rotating shaft of the embodiment.

[0028] The reference numerals in the figure are: 1, chassis; 2, motor; 3, transmission mechanism; 4, balance mechanism; 5, brake rod; 6, support plate; 7, rotating shaft; 8, main shaft; 9, lock hole; 10, lock rod; 11, support base; 12, drive disc; 13, transmission disc; 14, slider; 15, strip-shaped block; 16, strip-shaped slot; 17, cylindrical sleeve; 18, limiting strip; 19, limiting groove; 20, retaining ring; 21, movable ring; 22, first connecting rod; 23, fixed sleeve; 24, first spring; 25, sliding pin; 26, circular ring; 27, cylindrical head; 28, cylindrical rod; 29, arc-shaped guiding sliding surface; 30, lead screw; 31, limiting rod; 32, shaft seat; 33, first gear; 34, second gear; 35, safety clutch; 36, rotating drum; 37, sliding seat; 38, cylindrical through slot; 39, jack; 40, vertical sleeve; 41, plug pin; 42, second spring; 43, telescopic rod; 44, strip-shaped through slot; 45, wedge block; 46, wedge surface; 47, central gear; 48, rack; 49, rotating ring; 50, long shaft sleeve; 51, second connecting rod. Specific embodiments

[0029] In order to further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Refer to Figures 1 to 11A novel self-locking structure of a DC brushless barrier shown in the figure comprises a chassis 1, a motor 2, a transmission mechanism 3, a balancing mechanism 4 and a gate rod 5. A horizontal support plate 6 is fixedly provided in the chassis 1, the motor 2 is fixedly provided at the bottom of the support plate 6, the short end of the gate rod 5 is connected to the outer wall of the chassis 1 through a rotating shaft 7, the transmission mechanism 3 comprises a main shaft 8 provided at the top of the support plate 6 and used to drive the rotating shaft 7 to rotate, a lock hole 9 is provided on the outer wall of the gate rod 5 facing the chassis 1, and also comprises an anti-lifting self-locking component provided at the top of the support plate 6, the anti-lifting self-locking component comprises a clutch mechanism, a horizontal movement mechanism, a reversing mechanism, a locking rod 10 and a bracket 11, the clutch mechanism is used to cut off and engage the power transmission between the main shaft 8 and the rotating shaft 7, the clutch mechanism comprises a driving disc 12 and a transmission disc 13 which can be engaged with each other, the driving disc 12 is slidably provided on the main shaft 8, and the transmission disc 13 is provided on the outer wall of the chassis 1. Connected to the rotating shaft 7, the horizontal moving mechanism is arranged beside the clutch mechanism, and the horizontal moving mechanism includes a slider 14, and the slider 14 is used to drive the driving disk 12 to slide on the main shaft 8, so as to realize the engagement and separation of the driving disk 12 and the transmission disk 13. The bracket 11 is arranged on the outer wall of the chassis 1, and the bracket 11 is used to support the horizontally placed gate rod 5. The reversing mechanism is arranged beside the horizontal moving mechanism. The reversing mechanism has two output ends that can be synchronously displaced horizontally in opposite directions. The slider 14 is connected to one of the output ends of the reversing mechanism, and the locking rod 10 is connected to the other output end of the reversing mechanism. When the slider 14 drives the driving disk 12 to separate from the transmission disk 13, the reversing mechanism is used to make the locking rod 10 move toward the gate rod 5 that is gradually rotated to the horizontal state, and finally the locking rod 10 is horizontally inserted into the lock hole 9 to lock the gate rod 5 that has been horizontal.

[0031] The transmission mechanism 3 is used to connect the output end of the motor 2 to the main shaft 8. The balancing mechanism 4 in the barrier gate includes a pull rod and a plurality of tension springs (not shown in the figure). The pull rod is connected to the transmission mechanism 3. Since the rotation point of the gate rod 5 is located at its short end, when the gate rod 5 is driven by the motor 2 to rotate and lift, the gate rod 5 will have a tendency to swing downward at the long end of the gate rod 5 due to the overall force imbalance. At this time, the gate rod 5 will overcome the torque of the motor 2 and rotate in the opposite direction. Therefore, the tension of the plurality of tension springs is used to increase the torque of the motor 2 to prevent the gate rod 5 from reversing when being lifted.

[0032] After the gate rod 5 is placed horizontally, the horizontal gate rod 5 is used to restrict the entry and exit of motor vehicles. The traditional gate rod 5 is only connected to the output end of the motor 2 through the transmission mechanism 3, so it can be easily lifted by humans. In this way, the traditional gate cannot play the basic role of restricting the entry and exit of motor vehicles. Moreover, when the gate rod 5 is lifted by humans, the gate rod 5 will overcome the torque of the output end of the motor 2, which will reduce the service life of the motor 2 in the long run. Therefore, the gate rod 5 placed horizontally is locked by the present device to prevent the gate rod 5 from being lifted by humans.

[0033] When the gate rod 5 is in a vertical state, the drive disc 12 is engaged with the transmission disc 13. When the gate rod 5 needs to be placed horizontally, the motor 2 is started through the control system (not shown in the figure). Thereafter, the output end of the motor 2 transmits the torque to the main shaft 8 through the transmission mechanism 3, so that the main shaft 8 rotates. The rotated main shaft 8 transmits the power to the rotating shaft 7 through the engaged drive disc 12 and the transmission disc 13, so that the gate rod 5 slowly rotates to the horizontal. In the process of the gate rod 5 rotating from vertical to horizontal, the horizontal movement mechanism is started. At this time, the slider 14 will drive the drive disc 12 to gradually separate from the transmission disc 13. When the gate rod 5 is close to the horizontal, the drive disc 12 is driven by the slider 14 to gradually separate from the transmission disc 13. 12 is completely separated from the transmission disk 13. At this time, the short end of the gate rod 5 is in a free state, and the long end of the gate rod 5 will gradually swing down to be supported by the support seat 11 by its own gravity. At this point, the gate rod 5 is completely horizontal, and in the process of the slider 14 driving the driving disk 12 to gradually separate from the transmission disk 13, the slider 14 will drive one of the output ends of the reversing mechanism to move, and then the other output end of the reversing mechanism will drive the locking rod 10 to extend toward the gate rod 5 that gradually rotates to the horizontal state. When the gate rod 5 is completely horizontal, the locking rod 10 will be horizontally inserted into the lock hole 9, so that the gate rod 5 is locked by the locking rod 10, which effectively prevents the gate rod 5 from being artificially lifted;

[0034] When it is necessary to lift the gate rod 5 vertically through the control system, the motor 2 is driven to reverse through the control system first. Since the driving disk 12 and the transfer disk are separated at this time, the power between the gate rod 5 and the motor 2 is disconnected, and the gate rod 5 in the locked state will not be driven to lift up. Then the driving disk 12 is pushed toward the transmission disk 13 through the slider 14. At the same time, the sliding power of the slider 14 is transmitted to the locking rod 10 through the reversing mechanism, and the locking rod 10 is gradually retracted. When the locking rod 10 is retracted to separate from the lock hole 9, the driving disk 12 moves to engage with the transmission disk 13. When the driving disk 12 is engaged with the transfer disk, the main shaft 8 will transmit power to the rotating shaft 7, and finally the gate rod 5 is driven to be gradually lifted up.

[0035] In order to show the specific structure of the clutch mechanism, the following features are set:

[0036] The driving disc 13 is a conical sleeve, and the driving disc 12 is a cone body that fits into the conical sleeve. A number of strip-shaped blocks 15 evenly distributed along the circumferential direction of the driving disc 13 are formed on the inner peripheral wall of the driving disc 13. A number of strip-shaped slots 16 for inserting the strip-shaped blocks 15 are formed on the outer peripheral wall of the cone body. A columnar sleeve 17 sleeved on the main shaft 8 is coaxially formed on the side of the driving disc 12 away from the driving disc 13. A number of limiting strips 18 evenly distributed along the circumferential direction of the columnar sleeve 17 are formed on the inner wall of the columnar sleeve 17 near one end of the driving disc 12. A number of limiting grooves 19 for inserting the limiting strips 18 are formed at one end of the main shaft 8. Retaining rings 20 are formed on the outer wall of the columnar sleeve 17 near both ends of the columnar sleeve 17 respectively. A movable ring 21 is sleeved on the columnar sleeve 17 and is located between the two retaining rings 20. The movable ring 21 is connected to the slider 14 through a first connecting rod 22.

[0037] Through the cooperation of the limiting strips 18 and the limiting grooves 19, the columnar sleeve 17 can rotate following the main shaft 8 and can also displace axially along the main shaft 8. When the brake lever 5 is completely vertical, as Figure 5 shown, the driving disc 12 is fitted with the driving disc 13. At this time, the movable ring 21 abuts against the retaining ring 20 close to the driving disc 12 among them. During the process of the brake lever 5 rotating from vertical to horizontal, through the cooperation of a number of strip-shaped blocks 15 and strip-shaped slots 16, the driving disc 12 can drive the driving disc 13 to rotate. At the same time, the slider 14 drives the retaining ring 20 to gradually move along the axial direction of the columnar sleeve 17 from one retaining ring 20 close to the driving disc 12 to the other retaining ring 20 through the first connecting rod 22. During the movement of the movable ring 21 between the two retaining rings 20, the driving disc 12 and the driving disc 13 are not separated, and through the reversing mechanism, the displacement of the slider 14 will drive the locking rod 10 to gradually extend towards the brake lever 5. Once the movable ring 21 slides on the columnar sleeve 17 until it abuts against the retaining ring 20 far from the driving disc 12 among them, the entire columnar sleeve 17 will displace together with the movable ring 21, so that the driving disc 12 will gradually separate from the driving disc 13. When the brake lever 5 rotates close to horizontal, the driving disc 12 is completely separated from the driving disc 13. At this time, the locking rod 10 has not been inserted into the locking hole 9 yet. When the brake lever 5 swings through itself until it is completely supported by the support 11 and is in a horizontal state, the locking rod 10 will gradually be inserted into the locking hole 9. When the locking rod 10 is inserted into the locking hole 9, the slider 14 stops sliding, thus realizing the locking of the brake lever 5;

[0038] When the brake lever 5 is completely horizontal, as Figure 3As shown, the movable ring 21 abuts against the retaining ring 20 away from the driving disk 12. During the process of the brake lever 5 rotating from horizontal to vertical, the main shaft 8 first rotates in the reverse direction. Since the driving disk 12 is separated from the transmission disk 13 at this time, the brake lever 5 will not be driven to rotate. Then, the movable ring 21 is driven to displace in the reverse direction by the slider 14. At this time, the movable ring 21 will gradually move from the current position towards the retaining ring 20 close to the driving disk 12. At the same time, the locking lever 10 of the reversing mechanism will gradually retract. When the movable ring 21 abuts against the retaining ring 20 close to the driving disk 12, the locking lever 10 completely disengages from the locking hole 9. And as the slider 14 continues to slide, the driving disk 12 will be engaged with the transmission disk 13 after gradually approaching the transmission disk 13. Then, the rotating driving disk 12 will drive the transmission disk 13 to rotate. Since the locking lever 10 has been separated from the locking hole 9 before this, the brake lever 5 will be gradually lifted up thereafter.

[0039] Since the brake lever 5 needs to have a slow lifting and lowering speed, the motor 2 needs to control the main shaft 8 to rotate at a slow speed. Then, during the process of the driving disk 12 being engaged with the transmission disk 13, although the driving disk 12 is in a slow rotation state, tooth jamming will still occur between the driving disk 12 and the transmission disk 13. In order to reduce the damage caused by the above tooth jamming to the driving disk 12 and the transmission disk 13, the following features are specifically set:

[0040] An elastic member is provided between the transmission disk 13 and the rotating shaft 7. The elastic member includes a fixed sleeve 23, a first spring 24 and a sliding pin 25. One end of the fixed sleeve 23 is an open structure and is coaxially fixed to the rotating shaft 7. The other end of the fixed sleeve 23 is coaxially formed with a ring 26. One end of the sliding pin 25 is a columnar head 27 sliding in the fixed sleeve 23, and the other end of the sliding pin 25 is a columnar rod 28 horizontally passing through the center of the ring 26. The transmission disk 13 is coaxially fixed to the extending end of the columnar rod 28. The first spring 24 is arranged in the fixed sleeve 23. The two ends of the first spring 24 respectively abut against the columnar sleeve 17 and the end of the rotating shaft 7. Through the columnar head 27 sliding in the fixed sleeve 23, the transmission disk 13 can only displace along its axial direction. An arc-shaped guiding sliding surface 29 is formed at one end of each strip-shaped block 15 facing the driving disk 12.

[0041] As the drive disk 12 gradually approaches the transmission disk 13, if the strip block 15 cannot be inserted into the rotating strip slot 16, the portion between two adjacent strip slots 16 will conflict with the strip block 15, and as the drive disk 12 gradually approaches, the transmission disk 13 will be conflicted and gradually retreat. At this time, the sliding pin 25 coaxially adjacent to the transmission disk 13 will gradually retract into the fixed sleeve 23, and the columnar head 27 will compress the No. 1 spring 24, so that the No. 1 spring 24 generates elastic force. Then, the gradually approaching drive disk 12 can be rotated by the displacement of the transmission disk 13 to allow the strip block 15 to be inserted into the corresponding strip groove, further preventing damage to the drive disk 12 and the transmission disk 13 caused by tooth hitting. The arc-shaped guide surface 29 of each strip block 15 plays a guiding role when it contacts the portion between two adjacent strip slots 16.

[0042] In order to reduce the number of large drive sources in the chassis 1, the slider 14 is arranged to be connected to the main shaft 8 in a transmission manner, and the slider 14 is driven to move horizontally by the rotation of the main shaft 8. Therefore, in order to achieve the above purpose, the following features are specifically set:

[0043] The horizontal movement mechanism also includes a screw rod 30, a limit rod 31 and a shaft seat 32. The shaft seat 32 is fixed to the top of the support plate 6. The screw rod 30 is parallel to the main shaft 8, and one end of the screw rod 30 is coaxially connected to the shaft seat 32. There are two limit rods 31, and the two limit rods 31 are symmetrically fixed on both sides of the screw rod 30. Each limit rod 31 is parallel to the screw rod 30. The slider 14 is sleeved on the screw rod 30, and the middle part of the slider 14 is threadedly matched with the screw rod 30. The two ends of the slider 14 slide on the two limit rods 31 respectively. A No. 1 gear 33 is coaxially fixedly connected to the end of the screw rod 30 away from the shaft seat 32, and a No. 2 gear 34 meshing with the No. 1 gear 33 is coaxially fixedly connected to the main shaft 8. A safety clutch 35 is provided at the bottom of the slider 14 to prevent the slider 14 from sliding to the limit and hitting the shaft seat 32.

[0044] When the main shaft 8 rotates, the main shaft 8 will drive the second gear 34 to drive the first gear 33 to rotate, so that the lead screw 30 coaxially connected to the first gear 33 will rotate and drive the slider 14 to slide. When the main shaft 8 rotates to drive the gate rod 5 to lift, the slider 14 needs to be displaced toward the driving disk 12 all the time. Since the space in the chassis 1 is limited, when the slider 14 moves to the limit, it will hit the shaft seat 32, thereby jamming the main shaft 8. Therefore, the safety clutch 35 provided at the bottom of the slider 14 is used to stop the displacement of the slider 14 before the slider 14 moves to the limit. At the same time, the current lead screw 30 can still rotate. Therefore, in the process of the lead screw 30 being driven by the main shaft 8 to rotate continuously, the slider 14 will first move to engage the driving disk 12 with the transmission disk 13, and then stop sliding through the safety clutch 35 without affecting the rotation of the lead screw 30.

[0045] In order to show the specific structure of the safety clutch 35, the following features are set:

[0046] The slider 14 includes a rotating cylinder 36 and a sliding seat 37. A cylindrical through groove 38 coaxial with the screw rod 30 is provided in the sliding seat 37. The rotating cylinder 36 is coaxially inserted in the cylindrical through groove 38. The inner wall of the rotating cylinder 36 is threadedly matched with the screw rod 30. A plug hole 39 is provided on the outer wall of the rotating cylinder 36. The two ends of the sliding seat 37 slide on the two limit rods 31 respectively. The two ends of the No. 1 connecting rod 22 are respectively connected to the sliding seat 37 and the movable ring 21. The safety clutch 35 includes a vertical sleeve 40, a latch 41, a No. 2 spring 42 and a telescopic rod 43. The vertical sleeve 40 is fixedly connected to the bottom of the sliding seat 37. The latch 41 is vertically arranged in the vertical sleeve 40. The lower end of the latch 41 Sliding in the vertical sleeve 40, the upper end of the latch pin 41 passes upward through the sliding seat 37 and is inserted into the insertion hole 39. The No. 2 spring 42 is arranged in the vertical sleeve 40. The upper and lower ends of the No. 2 spring 42 respectively contact the lower end of the latch pin 41 and the bottom inner wall of the vertical sleeve 40. A vertical strip through groove 44 is opened on the peripheral wall of the vertical sleeve 40. An inclined wedge block 45 is formed on the lower end of the latch pin 41 and passes through the strip through groove 44 horizontally. The telescopic rod 43 is horizontally arranged on the side of the shaft seat 32. The end of the telescopic rod 43 facing the slider 14 is formed with an inclined wedge surface 46 that matches the inclined wedge block 45, so that the latch pin 41 is driven to move downward by the telescopic rod 43 contacting the inclined wedge block 45.

[0047] The telescopic rod 43 is telescopically extended by a small telescopic cylinder (not shown in the figure). When the slider 14 is away from the transmission disk 13, the No. 2 spring 42 will push up the pin 41. At this time, the upper end of the pin 41 will be inserted into the socket 39, thereby limiting the rotation of the rotating drum 36, so that the rotating drum 36 and the sliding seat 37 are in a fixed state. At this time, the rotating drum 36 and the sliding seat 37 can be regarded as one. Then, when the screw rod 30 rotates, the rotating drum 36 and the sliding seat 37 are driven to move horizontally through the threaded cooperation between the inner wall of the rotating drum 36 and the screw rod 30. At this time, the movable ring 21 connected to the sliding seat 37 will move toward the retaining ring 20 close to the driving disk 12. When the movable ring 21 conflicts with the current retaining ring 20, the entire driving disk 12 and the transmission disk 13 are engaged. In the embodiment of the present invention, the vertical sleeve 40 will gradually approach the telescopic rod 43. Once one end of the contact rod with the inclined wedge surface 46 contacts the inclined wedge block 45, the entire latch 41 will be driven to slide downward and compress the No. 2 spring 42. At this time, the rotating drum 36 will change from the axial sliding state to the rotating state following the rotation of the screw rod 30. When the latch 41 is separated from the insertion hole 39, the driving disk 12 has been engaged with the transmission disk 13. Then, when the driving disk 12 drives the transmission disk 13 to rotate so that the gate rod 5 is lifted, the main shaft 8 will continue to rotate, and the screw rod 30 will continue to rotate with the main shaft 8. However, the rotating drum 36 at this time will not affect the rotation of the screw rod 30, so as to prevent the slider 14 from sliding to the limit and then hitting the shaft seat 32 through the safety clutch 35.

[0048] When the brake rod 5 needs to rotate from the vertical to the horizontal, the main shaft 8 starts to reverse. Therefore, the lead screw 30 will be driven to reverse. At this time, the small telescopic cylinder drives the telescopic rod 43 to retract, so that the wedge block 45 is separated from the end of the telescopic rod 43. Then, the elastic force of the second spring 42 drives the bolt 41 to move upward. After that, the upper end of the bolt 41 will always abut against the outer wall of the rotating cylinder 36 until the rotating cylinder 36 rotates to the jack 39 corresponding to the bolt 41. At this time, the bolt 41 will immediately insert upward into the jack 39, so that the rotating cylinder 36 will be locked with the sliding seat 37 again. After that, the rotating cylinder 36 and the sliding seat 37 will be driven by the lead screw 30 to perform a reverse horizontal displacement. When machining the bolt 41, the end of the upper end of the bolt 41 is machined into a round head shape, so as to play a guiding and sliding role when the upper end of the bolt 41 abuts against the outer wall of the rotating cylinder 36.

[0049] In order to show the specific structure of the commutation mechanism, the following features are set:

[0050] The commutation mechanism includes a central gear 47 arranged at the top of the support plate 6 and two racks 48 distributed at 180° along the circumferential direction of the central gear 47. The axis of the central gear 47 is vertical. Each rack 48 is horizontal and slidably connected to the top of the support plate 6, and each rack 48 meshes with the central gear 47. The two racks 48 are respectively the two output ends of the above commutation mechanism. Among them, the sliding seat 37 is fixedly connected to one of the racks 48 through a second connecting rod 51, and the locking rod 10 is fixedly connected to the other rack 48.

[0051] When the sliding seat 37 drives one of the racks 48 to displace horizontally, the other rack 48 can displace horizontally in the opposite direction through the commutation of the central gear 47, so as to realize that when the driving disc 12 approaches the transmission disc 13, the locking rod 10 gradually retracts, and when the driving disc 12 moves away from the transmission disc 13, the locking rod 10 gradually extends.

[0052] In order to reduce the rotational friction generated after the movable ring 21 abuts against the corresponding retaining ring 20, the following features are specifically set:

[0053] An annular groove is formed on both sides of the movable ring 21, and a rotating ring 49 is arranged in each annular groove.

[0054] Each rotating ring 49 can be connected to the annular groove through a plain bearing (not shown in the figure), so that each rotating ring 49 can rotate in the corresponding annular groove. When the movable ring 21 slides left and right, the two rotating rings 49 will respectively abut against the two retaining rings 20, so that the rotating rings 49 will rotate together with the retaining rings 20, thereby reducing the rotational friction generated after the movable ring 21 abuts against the corresponding retaining ring 20.

[0055] In order to improve the strength after the locking bar 10 locks the gate bar 5, the following features are specifically set:

[0056] The number of locking bars 10 and lock holes 9 is several. Each locking bar 10 is horizontally fixed to the corresponding rack 48, and several long shaft sleeves 50 corresponding to the locking bars 10 are fixedly arranged on the inner wall of the chassis 1. Each locking bar 10 can be horizontally inserted into the corresponding long shaft sleeve 50.

[0057] When the locking bar 10 locks the gate bar 5 and then is manually lifted, the gate bar 5 will drive the rack 48 connected to the locking bar 10 to move upward. Since the rack 48 is slidably connected to the support plate 6, the rack 48 may be disconnected from the support plate 6 due to excessive force. Therefore, the long shaft sleeve 50 is used to increase the force-bearing surface of the locking bar 10. When the gate bar 5 is manually lifted, each locking bar 10 will be limited by the corresponding long shaft sleeve 50, thereby improving the strength of the locking bar 10.

[0058] Working principle:

[0059] After the barrier gate places the gate bar 5 horizontally, the horizontal gate bar 5 is used to restrict the entry and exit of motor vehicles. The traditional gate bar 5 is only connected to the output end of the motor 2 through the transmission mechanism 3, so it can be easily lifted manually. Then the traditional barrier gate cannot play the basic role of restricting the entry and exit of motor vehicles. Moreover, when the gate bar 5 is lifted manually, the gate bar 5 will overcome the torque of the output end of the motor 2. Over time, the service life of the motor 2 will be reduced. Therefore, this device is used to lock the horizontally placed gate bar 5 to prevent the gate bar 5 from being lifted manually;

[0060] When the gate rod 5 is in a vertical state, the drive disc 12 is engaged with the transmission disc 13. When the gate rod 5 needs to be placed horizontally, the motor 2 is started through the control system (not shown in the figure). Thereafter, the output end of the motor 2 transmits the torque to the main shaft 8 through the transmission mechanism 3, so that the main shaft 8 rotates. The rotated main shaft 8 transmits the power to the rotating shaft 7 through the engaged drive disc 12 and the transmission disc 13, so that the gate rod 5 slowly rotates to the horizontal. In the process of the gate rod 5 rotating from vertical to horizontal, the horizontal movement mechanism is started. At this time, the slider 14 will drive the drive disc 12 to gradually separate from the transmission disc 13. When the gate rod 5 is close to the horizontal, the drive disc 12 is driven by the slider 14 to gradually separate from the transmission disc 13. 12 is completely separated from the transmission disk 13. At this time, the short end of the gate rod 5 is in a free state, and the long end of the gate rod 5 will gradually swing down to be supported by the support seat 11 by its own gravity. At this point, the gate rod 5 is completely horizontal, and in the process of the slider 14 driving the driving disk 12 to gradually separate from the transmission disk 13, the slider 14 will drive one of the output ends of the reversing mechanism to move, and then the other output end of the reversing mechanism will drive the locking rod 10 to extend toward the gate rod 5 that gradually rotates to the horizontal state. When the gate rod 5 is completely horizontal, the locking rod 10 will be horizontally inserted into the lock hole 9, so that the gate rod 5 is locked by the locking rod 10, which effectively prevents the gate rod 5 from being artificially lifted;

[0061] When it is necessary to lift the gate rod 5 vertically through the control system, the motor 2 is driven to reverse through the control system first. Since the driving disk 12 and the transfer disk are separated at this time, the power between the gate rod 5 and the motor 2 is disconnected, and the gate rod 5 in the locked state will not be driven to lift up. Then the driving disk 12 is pushed toward the transmission disk 13 through the slider 14. At the same time, the sliding power of the slider 14 is transmitted to the locking rod 10 through the reversing mechanism, and the locking rod 10 is gradually retracted. When the locking rod 10 is retracted to separate from the lock hole 9, the driving disk 12 moves to engage with the transmission disk 13. When the driving disk 12 is engaged with the transfer disk, the main shaft 8 will transmit power to the rotating shaft 7, and finally the gate rod 5 is driven to be gradually lifted up.

[0062] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A self-locking structure of a new type of DC brushless barrier gate, comprising a chassis (1), a motor (2), a transmission mechanism (3), a balance mechanism (4) and a barrier rod (5). A horizontal support plate (6) is fixedly arranged inside the chassis (1). The motor (2) is fixedly arranged at the bottom of the support plate (6). The short end of the barrier rod (5) is connected to the outer wall of the chassis (1) through a rotating shaft (7). The transmission mechanism (3) includes a main shaft (8) arranged at the top of the support plate (6) and used for driving the rotating shaft (7) to rotate. A lock hole (9) is formed on the outer wall of the barrier rod (5) facing the chassis (1). It is characterized in that, It further includes an anti-lifting self-locking assembly arranged on the top of the support plate (6). The anti-lifting self-locking assembly includes a clutch mechanism, a horizontal movement mechanism, a reversing mechanism, a locking rod (10) and a support base (11). The clutch mechanism is used to cut off and engage the power transmission between the main shaft (8) and the rotating shaft (7). The clutch mechanism includes a driving disk (12) and a transmission disk (13) that can be mutually engaged. The driving disk (12) is slidably arranged on the main shaft (8), and the transmission disk (13) is connected to the rotating shaft (7). The horizontal movement mechanism is arranged beside the clutch mechanism. The horizontal movement mechanism includes a slider (14). The slider (14) is used to drive the driving disk (12) to slide on the main shaft (8), so as to realize the engagement and separation of the driving disk (12) and the transmission disk (13). The support base (11) is arranged on the outer wall of the chassis (1). The support base (11) is used to support the horizontally placed brake lever (5). The reversing mechanism is arranged beside the horizontal movement mechanism. The reversing mechanism has two output ends that can move horizontally in the same or opposite directions synchronously. The slider (14) is connected to one of the output ends of the reversing mechanism, and the locking rod (10) is connected to the other output end of the reversing mechanism. When the slider (14) drives the driving disk (12) to separate from the transmission disk (13), the reversing mechanism makes the locking rod (10) displace towards the brake lever (5) that is gradually rotating to the horizontal position. Finally, the locking rod (10) is horizontally inserted into the locking hole (9) to lock the already horizontal brake lever (5).

2. The self-locking structure of a novel DC brushless gate according to claim 1, characterized in that, The transmission disk (13) is a conical sleeve, and the driving disk (12) is a cone that fits with the conical sleeve. A number of strip-shaped blocks (15) evenly distributed along the circumferential direction of the transmission disk (13) are formed on the inner peripheral wall of the transmission disk (13). A number of strip-shaped slots (16) for inserting the strip-shaped blocks (15) are formed on the outer peripheral wall of the cone. A columnar sleeve (17) sleeved on the main shaft (8) is coaxially formed on the side of the driving disk (12) facing away from the transmission disk (13). A number of limiting strips (18) evenly distributed along the circumferential direction of the columnar sleeve (17) are formed on the inner wall of the columnar sleeve (17) near one end of the driving disk (12). A number of limiting grooves (19) for inserting the limiting strips (18) are formed at one end of the main shaft (8). Retaining rings (20) are formed on the outer wall of the columnar sleeve (17) near both ends of the columnar sleeve (17). A movable ring (21) is sleeved on the columnar sleeve (17) between the two retaining rings (20). The movable ring (21) is connected to the slider (14) through a first connecting rod (22).

3. The self-locking structure of a novel DC brushless barrier gate according to claim 2, wherein An elastic member is provided between the driving disc (13) and the rotating shaft (7). The elastic member includes a fixed sleeve (23), a first spring (24), and a sliding pin (25). One end of the fixed sleeve (23) is an open structure and is coaxially fixed to the rotating shaft (7). A circular ring (26) is coaxially formed at the other end of the fixed sleeve (23). One end of the sliding pin (25) is a columnar head (27) that slides within the fixed sleeve (23), and the other end of the sliding pin (25) is a columnar rod (28) that horizontally passes through the center of the circular ring (26). The driving disc (13) is coaxially fixed to the extending end of the columnar rod (28). The first spring (24) is disposed within the fixed sleeve (23), and the two ends of the first spring (24) respectively abut against the columnar sleeve (17) and the end of the rotating shaft (7). Through the columnar head (27) that slides within the fixed sleeve (23), the driving disc (13) can only displace along its axial direction. An arc-shaped guiding and sliding surface (29) is formed at one end of each strip-shaped block (15) facing the driving disc (12).

4. The self-locking structure of a novel DC brushless gate according to claim 1, characterized in that, The horizontal movement mechanism further includes a lead screw (30), a limiting rod (31), and a shaft seat (32). The shaft seat (32) is fixed to the top of the support plate (6). The lead screw (30) is parallel to the main shaft (8), and one end of the lead screw (30) is coaxially connected to the shaft seat (32). The number of limiting rods (31) is two, and the two limiting rods (31) are symmetrically fixed on both sides of the lead screw (30) respectively. Each limiting rod (31) is parallel to the lead screw (30). The slider (14) is sleeved on the lead screw (30), and the middle part of the slider (14) is in threaded cooperation with the lead screw (30). The two ends of the slider (14) respectively slide on the two limiting rods (31). A first gear (33) is coaxially fixed to the end of the lead screw (30) away from the shaft seat (32). A second gear (34) that meshes with the first gear (33) is coaxially fixed to the main shaft (8). A safety clutch (35) for preventing the slider (14) from hitting the shaft seat (32) after sliding to the limit is provided at the bottom of the slider (14).

5. The self-locking structure of a novel DC brushless barrier gate according to claim 4, characterized in that, The slider (14) includes a rotary cylinder (36) and a sliding seat (37). A columnar through groove (38) coaxial with the lead screw (30) is formed in the sliding seat (37). The rotary cylinder (36) is coaxially inserted into the columnar through groove (38). The inner wall of the rotary cylinder (36) is in threaded engagement with the lead screw (30). A jack (39) is formed in the outer wall of the rotary cylinder (36). The two ends of the sliding seat (37) slide on two limiting rods (31) respectively. The two ends of the first connecting rod (22) are connected to the sliding seat (37) and the movable ring (21) respectively. The safety clutch (35) includes a vertical sleeve (40), a plug pin (41), a second spring (42) and a telescopic rod (43). The vertical sleeve (40) is fixedly connected to the bottom of the sliding seat (37). The plug pin (41) is vertically arranged in the vertical sleeve (40). The lower end of the plug pin (41) slides in the vertical sleeve (40). The upper end of the plug pin (41) passes upward through the sliding seat (37) and is inserted into the jack (39). The second spring (42) is arranged in the vertical sleeve (40). The upper and lower ends of the second spring (42) are respectively in contact with the lower end of the plug pin (41) and the bottom inner wall of the vertical sleeve (40). A vertical strip-shaped through groove (44) is formed in the peripheral wall of the vertical sleeve (40). An inclined wedge block (45) horizontally protruding out of the strip-shaped through groove (44) is formed at the lower end of the plug pin (41). The telescopic rod (43) is horizontally arranged beside the shaft seat (32). An inclined wedge surface (46) matched with the inclined wedge block (45) is formed at the end of the telescopic rod (43) facing the slider (14). Thus, the plug pin (41) is driven to move downward by the telescopic rod (43) pressing against the inclined wedge block (45).

6. The self-locking structure of a novel DC brushless barrier gate according to claim 5, characterized in that, The reversing mechanism includes a central gear (47) arranged on the top of the support plate (6) and two racks (48) distributed at 180° along the circumferential direction of the central gear (47). The axis of the central gear (47) is vertical. Each rack (48) is horizontally slidably connected to the top of the support plate (6) and meshes with the central gear (47). The two racks (48) are respectively the two output ends of the above reversing mechanism. Among them, the sliding seat (37) is fixedly connected to one of the racks (48) through a second connecting rod (51), and the locking rod (10) is fixedly connected to the other rack (48).

7. The self-locking structure of a novel DC brushless barrier gate according to claim 2, characterized in that, An annular groove is formed on each side of the movable ring (21), and a rotating ring (49) is arranged in each annular groove.

8. The self-locking structure of a novel DC brushless barrier gate according to claim 6, characterized in that, The number of the locking rods (10) and the locking holes (9) is several. Each locking rod (10) is horizontally fixedly connected to the corresponding rack (48), and a plurality of long shaft sleeves (50) corresponding to the locking rods (10) one by one are fixedly arranged on the inner wall of the chassis (1). Each locking rod (10) can be horizontally inserted into the corresponding long shaft sleeve (50).

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