A locking and unlocking mechanism of a sled

Abstract

The utility model provides a kind of locking and unlocking mechanism of skid, it is related to the technical field of industrial conveying, including base, the top of base is provided with lifting frame, lifting assembly is installed between base and lifting frame;Lifting assembly is used to drive lifting frame to lift;Four corners of lifting frame are all installed with unlocking mechanism;Lifting assembly includes driving motor, driving motor is fixedly installed on base, the rotating end of driving motor is fixedly connected with driving synchronous pulley, and two horizontal shafts are symmetrically provided on the top of base;Unlocking mechanism can cooperate with skid positioning hole of skid by skid positioning pin, ensure alignment accuracy, skid has inductive sensor real-time detection skid whether in place, combined with unlocking lever opening position inductive sensor and unlocking lever locking position inductive sensor accurate feedback to locking and unlocking state, form whole-process automation control, replace artificial alignment and state confirmation, improve operating efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial conveying, and in particular to a locking and unlocking mechanism for a skid. Background Technology

[0002] A skid is a load-bearing and transfer device used in industrial automated conveying systems. It typically consists of a metal frame with a bottom structure that mates with conveyor tracks and positioning components (such as positioning holes and guide wheels). Its main function is to carry various workpieces and transfer them between different workstations via a conveying system (such as a roller bed). In modern industrial production, especially in automobile manufacturing, logistics warehousing, and construction machinery, automated conveying systems are a core element for achieving efficient production and transfer. As the core carrier for workpiece transfer across workstations, the skid's precise stopping, stable locking, and rapid unlocking at each workstation directly determine production efficiency and operational safety. Traditional skid locking and unlocking mechanisms have the following problems:

[0003] Traditional mechanisms often rely on mechanical limits or manual alignment, resulting in a high misalignment rate between the skid and locking components. This can easily cause the workpiece to shift during locking, affecting the stability of subsequent processing or conveying and leading to low overall efficiency. Some mechanisms use hydraulic or pneumatic drives for lifting and locking, which are susceptible to impacts or shaking during lifting due to fluctuations in medium pressure. Furthermore, wear of the seals can lead to leaks, affecting long-term stability and durability. Therefore, it is necessary to provide a skid locking and unlocking mechanism to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a locking and unlocking mechanism for a skid.

[0005] The present invention provides a locking and unlocking mechanism for a skid, including a base, a lifting frame above the base, and a lifting component installed between the base and the lifting frame;

[0006] The lifting component is used to drive the lifting frame to move up and down;

[0007] Unlocking mechanisms are installed at all four corners of the lifting frame;

[0008] The lifting assembly includes a drive motor, which is fixedly mounted on the base. The rotating end of the drive motor is fixedly connected to a driving synchronous pulley. Two horizontal shafts are symmetrically arranged on both sides of the top of the base. A driven synchronous pulley is fixedly sleeved on the outer side of the horizontal shaft. The driven synchronous pulley and the driving synchronous pulley are jointly driven by a synchronous belt. Cams are fixedly connected to both ends of the horizontal shafts. A needle roller bearing is fixedly sleeved on one end of each cam. Guide grooves corresponding to the needle roller bearings are fixedly connected to the bottom of the lifting frame.

[0009] Preferably, the unlocking mechanism includes an unlocking mounting base, which is fixedly connected to the side wall of the lifting frame. A rotary motor is fixedly installed at the bottom of the unlocking mounting base. The rotating end of the rotary motor passes through the unlocking mounting base and extends above it, where it is fixedly connected to an unlocking lever. A skid positioning pin, an unlocking lever open position sensing sensor, a skid presence / absence sensing sensor, and an unlocking lever lock position sensing sensor are fixedly installed at the top of the unlocking mounting base.

[0010] Preferably, the outer wall of the needle roller bearing is in rolling contact with the inner wall of the guide groove, and two seated bearings are symmetrically rotated on the outer side of the horizontal shaft, with the bottom of the seated bearings fixedly connected to the top of the base.

[0011] Preferably, the base is also equipped with a sensing component, which includes guide wheels. The guide wheels are rotatably connected to the bottom of the lifting frame. Vertical guide blocks are fixedly connected to both sides of the top of the base. There are three guide wheels, and the three guide wheels respectively roll into contact with the three side walls of the vertical guide blocks.

[0012] Preferably, a high-position block and a low-position block are fixedly sleeved on the outer side of the horizontal axis, a high-position sensing sensor corresponding to the high-position block is fixedly installed on one side of the top of the base, and a low-position sensing sensor corresponding to the low-position block is also fixedly installed on one side of the top of the base.

[0013] Preferably, the top of the skid positioning pin is provided with a tapered guide portion.

[0014] Preferably, the base is symmetrically fixed with four feet at its bottom.

[0015] Compared with related technologies, the locking and unlocking mechanism of the skid provided by this utility model has the following advantages:

[0016] 1. The unlocking mechanism can cooperate with the skid positioning hole of the skid through the skid positioning pin to ensure the alignment accuracy. The skid has a sensor to detect whether the skid is in place in real time. Combined with the unlocking lever open position sensor and unlocking lever lock position sensor for accurate feedback on the locking and unlocking status, it forms a fully automated control process, replacing manual alignment and status confirmation, and improving operation efficiency.

[0017] 2. In the lifting assembly, the drive motor drives the horizontal shaft to rotate via a synchronous belt. The cam drives the needle roller bearing to roll in the guide groove, realizing the smooth lifting of the lifting frame and avoiding the impact and shaking of hydraulic and pneumatic drives. The support of the bearing on the horizontal shaft reduces transmission friction. Combined with the perpendicularity constraint of the guide wheel and the vertical guide block, it significantly improves the long-term operational stability and durability of the locking and unlocking mechanism of the skid.

[0018] 3. The sensing components, through the cooperation of high-position blocks, low-position blocks, high-position sensors, and low-position sensors, provide real-time feedback on the high and low position status of the lifting frame, ensuring accurate lifting stroke. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the locking and unlocking mechanism of the skid provided by this utility model;

[0020] Figure 2 This is a partial structural diagram of the locking and unlocking mechanism of the skid in this utility model.

[0021] The diagram shows the following components: 1. Base; 2. Lifting frame; 3. Lifting assembly; 301. Drive motor; 302. Active synchronous pulley; 303. Driven synchronous pulley; 304. Synchronous belt; 305. Horizontal shaft; 306. Cam; 307. Needle roller bearing; 308. Guide groove; 309. Bearing with seat; 4. Sensing assembly; 401. Guide wheel; 402. Vertical guide block; 403. High position sensor; 404. High position block; 405. Low position sensor; 406. Low position block; 5. Unlocking mechanism; 501. Unlocking mounting base; 502. Slide positioning pin; 503. Unlock lever open position sensor; 504. Slide presence / absence sensor; 505. Unlock lever locked position sensor; 506. Rotary motor; 507. Unlock lever; 6. Foot. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Example 1

[0024] Please refer to the following: Figures 1 to 2 A locking and unlocking mechanism for a skid includes a base 1, a lifting frame 2 mounted above the base 1, and a lifting assembly 3 installed between the base 1 and the lifting frame 2. The lifting assembly 3 drives the lifting frame 2 to move up and down. Unlocking mechanisms 5 are installed at each of the four corners of the lifting frame 2, and the installation positions of the unlocking mechanisms 5 are adapted to the skid. The lifting assembly 3 includes a drive motor 301, which is fixedly mounted on the base 1. A drive synchronous pulley 302 is fixedly connected to the rotating end of the drive motor 301. The top two sides of the base 1... The device is equipped with two horizontal shafts 305. A driven synchronous pulley 303 is fixedly sleeved on the outer side of the horizontal shaft 305. A synchronous belt 304 is sleeved on the outer side of the driven synchronous pulley 303 and the driven synchronous pulley 302. Cams 306 are fixedly connected to both ends of the horizontal shaft 305. A needle roller bearing 307 is fixedly sleeved on one end of the cam 306. A guide groove 308 corresponding to the needle roller bearing 307 is fixedly connected to the bottom of the lifting frame 2. The cross-section of the guide groove 308 is rectangular. The needle roller bearing 307 is adapted to the guide groove 308.

[0025] In the above, the base 1 provides stable support for the locking and unlocking mechanism of the entire skid. The lifting frame 2 serves as the mounting carrier for the unlocking mechanism 5. The height is adjusted through the lifting assembly 3. The drive motor 301 drives the horizontal shaft 305 to rotate through the transmission of the active synchronous pulley 302, the synchronous belt 304 and the driven synchronous pulley 303, ensuring that the cams 306 on both sides move in unison. When the cams 306 rotate, the needle roller bearing 307 rolls in the guide groove 308, driving the lifting frame 2 to rise and fall, thus accurately controlling the lifting height of the lifting frame 2.

[0026] Furthermore, the unlocking mechanism 5 includes an unlocking mounting base 501, which is fixedly connected to the side wall of the lifting frame 2. A rotary motor 506 is fixedly installed at the bottom of the unlocking mounting base 501. The rotating end of the rotary motor 506 passes through the unlocking mounting base 501 and extends above it, where an unlocking lever 507 is fixedly connected. A skid positioning pin 502, an unlocking lever open position sensing sensor 503, a skid presence / absence sensing sensor 504, and an unlocking lever locked position sensing sensor 505 are fixedly installed at the top of the unlocking mounting base 501.

[0027] In the above, the unlocking mounting base 501 integrates the components of the unlocking mechanism 5 onto the lifting frame 2. The rotary motor 506 drives the unlocking lever 507 to rotate, realizing the locking and unlocking actions of the skid. The skid positioning pin 502 is used for temporary mechanical positioning after the skid is in place. The unlocking lever open position sensor 503, the skid presence / absence sensor 504, and the unlocking lever locked position sensor 505 respectively detect the open state of the unlocking lever, the presence of the skid, and the locked state, forming a closed-loop control.

[0028] Furthermore, the outer wall of the needle roller bearing 307 rolls in contact with the inner wall of the guide groove 308, and two seated bearings 309 are symmetrically rotated on the outer side of the horizontal shaft 305, with the bottom of the seated bearings 309 fixedly connected to the top of the base 1.

[0029] In the above, the rolling contact between the needle roller bearing 307 and the guide groove 308 reduces the frictional resistance during the lifting process, making the lifting frame 2 move more smoothly. The seated bearing 309 supports and positions the horizontal shaft 305, ensuring that the horizontal shaft 305 has no radial offset when rotating, thus improving the transmission stability.

[0030] Example 2

[0031] For further details, please refer to [link / reference]. Figures 1 to 2Based on Embodiment 1, a sensing component 4 is also installed on the base 1. The sensing component 4 includes a guide wheel 401, which is rotatably connected to the bottom of the lifting frame 2. Vertical guide blocks 402 are fixedly connected to both sides of the top of the base 1. There are three guide wheels 401, and the three guide wheels 401 respectively roll in contact with the three side walls of the vertical guide block 402. Specifically, the three side walls are the left side, the right side and the side near the drive motor 301 of the vertical guide block 402.

[0032] In the above, the three guide wheels 401 of the sensing component 4 contact the three sides of the vertical guide block 402 to form a stable guiding structure, which restricts the horizontal deviation of the lifting frame 2 during the lifting process and ensures that it moves in the vertical direction. This design can effectively counteract the lateral force generated by the cam 306 transmission and improve the accuracy of the lifting action.

[0033] Furthermore, a high-position block 404 and a low-position block 406 are fixedly sleeved on the outer side of the horizontal axis 305. A high-position sensing sensor 403 corresponding to the high-position block 404 is fixedly installed on one side of the top of the base 1, and a low-position sensing sensor 405 corresponding to the low-position block 406 is also fixedly installed on one side of the top of the base 1.

[0034] In the above, the high position block 404 and the low position block 406 rotate with the horizontal axis 305. When the lifting frame 2 rises to the high position, the high position sensor 403 detects the high position block 404 and sends a signal to control the drive motor 301 of the lifting assembly 3 to stop the lifting stroke. When it falls to the low position, the low position sensor 405 detects the low position block 406, realizing precise control of the lifting stroke and ensuring that the lifting frame 2 stays stably at the preset position.

[0035] Furthermore, the top of the skid positioning pin 502 is provided with a tapered guide, and four feet 6 are symmetrically fixedly installed at the bottom of the base 1.

[0036] In the above, the tapered guide at the top of the locating pin 502 can guide the locating pin to smoothly insert into the locating hole of the locating pin through the inclined surface when there is a slight positional deviation of the locating pin, thereby reducing the alignment failure caused by the conveying error. The foot 6 is used to support and fix the locking and unlocking mechanism of the entire locating pin.

[0037] Furthermore, both the drive motor 301 and the rotary motor 506 are commercially available motors. The high-position sensor 403, the low-position sensor 405, the unlock lever open position sensor 503, the skid presence / absence sensor 504, and the unlock lever locked position sensor 505 are all commercially available sensors. The drive motor 301, the high-position sensor 403, the low-position sensor 405, the unlock lever open position sensor 503, the skid presence / absence sensor 504, the unlock lever locked position sensor 505, and the rotary motor 506 are all electrically connected to an external PLC controller via wires, and their working status is controlled by the external PLC controller.

[0038] The working principle of the locking and unlocking mechanism for a skid provided by this utility model is as follows:

[0039] In use, the foot 6 is fixedly installed on the support platform with bolts or other fasteners to achieve stable fixation of the entire skid locking and unlocking mechanism. When the skid is delivered to the unlocking station by the external roller bed, the skid presence sensor 504 detects the skid and sends a signal to the external PLC controller, which then starts the drive motor 301 of the lifting assembly 3. The drive motor 301 drives the driven synchronous pulley 303 and the horizontal shaft 3 through the active synchronous pulley 302 and the synchronous belt 304. As the horizontal shaft 305 rotates, the cam 306 on the horizontal shaft 305 rotates accordingly. The needle roller bearing 307 at the end of the cam 306 rolls within the guide groove 308 of the lifting frame 2, thereby pushing the lifting frame 2 upward. Simultaneously, the three guide wheels 401 in the sensing assembly 4 roll along the vertical guide block 402 to ensure smooth lifting. When the lifting frame 2 reaches the high position, the high position block 404 on the horizontal shaft 305 triggers the high position sensor 403. The high position sensor 403 feeds a signal back to the PLC controller, stopping the drive motor 301. When the sliding lock mechanism 5's locating pin 502 is inserted into the sliding lock locating hole, if the sliding lock needs to be locked, the control rotary motor 506 drives the unlocking lever 507 to rotate. When the unlocking lever 507 reaches the locked position, the unlocking lever locking position sensor 505 sends a signal to the PLC controller, stopping the rotary motor 506 to complete the locking. If unlocking is required, the control rotary motor 506 drives the unlocking lever 507 in the reverse direction. When the unlocking lever 507 returns to the open position, the unlocking lever open position sensor 503 sends a signal. The signal is fed back to the PLC controller, stopping the rotating motor 506 to complete the unlocking; then the drive motor 301 is controlled to rotate in reverse, driving the lifting frame 2 to descend. When it descends to the low position, the low position block 406 on the horizontal axis 305 triggers the low position sensor 405, which feeds back the signal to the PLC controller, stopping the drive motor 301. The skid positioning pin 502 disengages from the skid positioning hole, and then the skid is sent away by the external roller bed. The skid presence or absence sensor 504 signal disappears, and one work cycle is completed.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A locking and unlocking mechanism of a sled, characterized by, Includes a base (1), a lifting frame (2) is provided above the base (1), and a lifting assembly (3) is installed between the base (1) and the lifting frame (2). The lifting component (3) is used to drive the lifting frame (2) to lift. Unlocking mechanisms (5) are installed at the four corners of the lifting frame (2); The lifting assembly (3) includes a drive motor (301), which is fixedly mounted on the base (1). The rotating end of the drive motor (301) is fixedly connected to an active synchronous pulley (302). Two horizontal shafts (305) are symmetrically arranged on both sides of the top of the base (1). A driven synchronous pulley (303) is fixedly sleeved on the outer side of the horizontal shaft (305). A synchronous belt (304) is sleeved on the outer side of the driven synchronous pulley (303) and the active synchronous pulley (302). A cam (306) is fixedly connected to both ends of the horizontal shaft (305). A needle roller bearing (307) is fixedly sleeved on one end of the cam (306). A guide groove (308) corresponding to the needle roller bearing (307) is fixedly connected to the bottom of the lifting frame (2).

2. A sled locking and unlocking mechanism as claimed in claim 1, wherein, The unlocking mechanism (5) includes an unlocking mounting base (501), which is fixedly connected to the side wall of the lifting frame (2). A rotary motor (506) is fixedly installed at the bottom of the unlocking mounting base (501). The rotating end of the rotary motor (506) passes through the unlocking mounting base (501) and extends above it, and is fixedly connected to an unlocking lever (507). A skid positioning pin (502), an unlocking lever open position sensing sensor (503), a skid presence / absence sensing sensor (504), and an unlocking lever lock position sensing sensor (505) are fixedly installed at the top of the unlocking mounting base (501).

3. A sled locking and unlocking mechanism as claimed in claim 1, wherein, The outer wall of the needle roller bearing (307) rolls in contact with the inner wall of the guide groove (308), and two seated bearings (309) are symmetrically rotated on the outer side of the horizontal shaft (305). The bottom of the seated bearing (309) is fixedly connected to the top of the base (1).

4. The locking and unlocking mechanism for a skid according to claim 1, characterized in that, The base (1) is also equipped with a sensing component (4), which includes a guide wheel (401). The guide wheel (401) is rotatably connected to the bottom of the lifting frame (2). Vertical guide blocks (402) are fixedly connected to both sides of the top of the base (1). There are three guide wheels (401), and the three guide wheels (401) respectively roll in contact with the three side walls of the vertical guide block (402).

5. The locking and unlocking mechanism for a skid according to claim 4, characterized in that, A high-position block (404) and a low-position block (406) are fixedly sleeved on the outer side of the horizontal axis (305). A high-position sensing sensor (403) corresponding to the high-position block (404) is fixedly installed on one side of the top of the base (1). A low-position sensing sensor (405) corresponding to the low-position block (406) is also fixedly installed on one side of the top of the base (1).

6. The locking and unlocking mechanism for a skid according to claim 2, characterized in that, The top of the skid positioning pin (502) is provided with a tapered guide.

7. The locking and unlocking mechanism for a skid according to claim 1, characterized in that, The base (1) has four feet (6) symmetrically fixed at its bottom.

Images