Locking device with compact structure

Abstract

The utility model discloses a locking device with a compact structure, which comprises a locking driver, a locking head and an advancing and retreating mechanism, the locking head is provided with a first locking head and a second locking head, the first locking head is connected with a driving shaft of the locking driver, and the second locking head is connected to a locked piece. The opposite locking sides of the first locking head and the second locking head are each provided with a screw-in locking piece used for rotating and locking. The advancing and retreating mechanism is provided with an advancing and retreating driver, a steering assembly and a transmission assembly, the advancing and retreating driver is arranged on one side of the locking driver in parallel, the output end of the advancing and retreating driver is in transmission connection with the steering assembly, and the steering assembly is connected with the locking driver through the transmission assembly so that the locking driver can be driven by the advancing and retreating driver to be close to a locked piece. And the first locking head is driven to rotate and is rotationally locked with the second locking head through the screw-in locking piece. In this way, the locking firmness of the locked piece is improved, the locking device is suitable for the high-load use scene of large equipment, consumable replacement is not needed, cost is saved, and the overall assembly structure is more compact.

Description

TECHNICAL FIELD

[0001] The utility model relates to drive locking equipment technical field especially relates to a compact structure locking device. BACKGROUND

[0002] At present, in the driving control of such drivers as motors, an auxiliary braking mechanism is usually arranged to prevent the motor from continuing to rotate when it stops due to power failure or mechanical failure during operation, thereby avoiding equipment damage or personnel injury.

[0003] For example, a Chinese utility model patent with the publication number CN220487759U and the patent name "Brake locking device for wind turbine" discloses a rotating shaft locking structure for locking the rotating shaft of the wind wheel. The rotating shaft locking structure includes first electric push rods fixed on the upper and lower sides of the inner wall of the generator compartment. Through the driving of the corresponding first electric push rods, the arc-shaped plate with a wear-resistant layer and a clamping groove is driven to tightly hold the ring with teeth on the outer wall of the rotating shaft of the wind wheel, so that the rotating shaft of the wind wheel no longer rotates and is not affected by strong winds, thereby better protecting the wind turbine.

[0004] For example, a Chinese utility model patent with the publication number CN220122728U and the patent name "Damping device for motor output shaft" includes an outer ring and an inner ring arranged coaxially, and a plurality of support ribs connected between the outer ring and the inner ring. In use, the inner ring is sleeved on the motor output shaft and fixed to the motor housing through the protrusions. The inner side surface of the arc-shaped part, i.e. the braking surface, is in frictional contact with the motor output shaft. Therefore, it is also a braking mode that applies frictional force to the output shaft.

[0005] However, the existing technology still has the following defects:

[0006] 1. The existing braking mode for the motor output shaft adopts frictional contact or upper and lower holding. As the friction layer thins, the braking effect decreases, and the friction layer needs to be replaced frequently. Moreover, the frictional contact braking is usually suitable for use scenarios with small loads, and the braking effect is not ideal when facing large loads.

[0007] In addition, the braking mechanism using frictional braking is usually arranged on the surface and radial direction of the output shaft. Therefore, it occupies the space around the output shaft, which leads to an insufficiently compact assembly structure of the braking mechanism and the driver, resulting in a large overall size.

[0008] 2. The existing frictional contact braking does not have an automatic reset function after the braking action is released. Therefore, the frictional braking mechanism is still prone to interfere with the rotation of the output shaft. UTILITY MODEL CONTENTS

[0009] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a locking device with a compact structure.

[0010] The purpose of this utility model is achieved by the following technical solution: a compact locking device, including a locking driver, a locking head and an advancing and retreating mechanism, wherein the locking head has a first locking head connected to the driving shaft of the locking driver and a second locking head connected to the locked part, and the opposing locking sides of the first locking head and the second locking head each have a screw-in locking member for rotational locking;

[0011] The forward and backward mechanism has a forward and backward drive, a steering component, and a transmission component. The forward and backward drive is arranged side by side on one side of the locking drive. The output end of the forward and backward drive is connected to the steering component, and the steering component is connected to the locking drive through the transmission component, so that the locking drive approaches the locked part under the drive of the forward and backward drive and drives the first locking head to rotate and the second locking head to be rotated and locked through the screw-in locking component.

[0012] Furthermore, the screw-in locking member includes a locking claw and a screw-in rib. The screw-in ribs on the opposing locking sides of the first locking head and the second locking head have opposite rotation directions. The screw-in end of the screw-in rib has a screw-in inclined surface that gradually slopes inward toward the inside of the first locking head or the second locking head, so that the locking claw locks onto the back side of the screw-in rib along the screw-in inclined surface and locks the first locking head and the second locking head.

[0013] Furthermore, a buffer is provided on the opposing locking sides of the first locking head and / or the second locking head.

[0014] Furthermore, the transmission assembly is arranged in parallel between the locking driver and the forward / reverse driver.

[0015] Furthermore, the transmission assembly has a first tube, a second tube, and a telescopic spring. The first tube is fixedly connected to the steering assembly. One end of the second tube is movably sleeved with the first tube, and the other end of the second tube is fixedly connected to the locking driver.

[0016] The telescopic spring is sleeved on the outside of the first pipe and the second pipe, and the two ends of the telescopic spring are respectively connected to the steering assembly and the locking driver, so that the telescopic spring, driven by the forward and backward driver, elastically pushes the first locking head on the locking driver closer to the second locking head, or elastically pulls the first locking head on the locking driver away from the second locking head.

[0017] Further, the advancing and retreating mechanism has an advancing and retreating seat, an advancing and retreating sliding hole is arranged on the advancing and retreating seat, the advancing and retreating driver and the turning assembly are arranged on the advancing and retreating seat, the turning assembly swings back and forth along the arrangement direction of the advancing and retreating sliding hole under the driving of the advancing and retreating driver and drives the locking driver through the transmission assembly.

[0018] Further, the turning assembly has a transmission arm and a swing seat, one end of the swing seat is movably connected to the advancing and retreating seat through a fixing shaft, the other end of the swing seat is connected to the transmission assembly and is slidably assembled on the advancing and retreating sliding hole through a sliding shaft, and the output end of the advancing and retreating driver is connected to the swing seat through the transmission arm.

[0019] Further, the locking device comprises a motor box and a locking sliding seat, a guide sliding hole is arranged on the motor box along the advancing and retreating direction of the locking driver, and the locking driver is arranged on the locking sliding seat and is slidably mounted on the guide sliding hole of the motor box.

[0020] Further, one end of the transmission assembly is connected with a transmission seat which is slidably mounted on the guide sliding hole of the motor box, and the transmission seat is fixedly connected to the locking sliding seat.

[0021] Further, the first locking head and the second locking head are movably sleeved with protection seats.

[0022] Compared with the prior art, the application has the following beneficial effects:

[0023] (1) The first locking head is arranged on the output end of the locking driver, and under the driving of the advancing and retreating driver and the transmission of the transmission assembly, the second locking head on the locked part is close to the first locking head, and the first locking head is driven to rotate and screw in by the locking driver, so that the first locking head is rotated and locked with the second locking head through the screwing locking part. Compared with the previous friction braking implementation means, the locking effect is more firm and better, especially suitable for large equipment high load use scene, and without frequent replacement of friction layer and other consumables, cost is saved.

[0024] In addition, the transmission output direction of the locking driver is arranged through the transmission assembly, and the transmission assembly is arranged side by side with the advancing and retreating driver and the locking driver, so that the assembly structure of the advancing and retreating driver, the locking driver and the transmission assembly is more compact, which is beneficial to the miniaturization design of the locking device and does not occupy the axial space of the locked part.

[0025] (2) by the first pipe and the second pipe on the set of telescopic spring, under the drive of the drive, can be through the elastic force of telescopic spring, push the locking drive and the first locking head forward, or pull the locking drive and the first locking head retreat, further realize the first locking head's automation forward locking and retreat reset purpose;Compared with the past using friction braking means, the locking device provided by the embodiment of the application can automatically reset to avoid interference to the locked part after unlocking, the safety effect is better, improve the locking and unlocking execution ability of the locking device. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the whole structure assembly schematic view of the locking device in the preferred embodiment of the utility model;

[0027] Figure 2 It is the partial cutaway three-dimensional schematic view of the locking device in the preferred embodiment of the utility model;

[0028] Figure 3 It is the enlarged schematic view of the first lock head and the second lock head after unlocking in the preferred embodiment of the utility model;

[0029] Figure 4 It is the schematic view of the first locking head of the locking drive and the second locking head of the locked part in the preferred embodiment of the utility model.

[0030] In the drawing:

[0031] 10, locking drive;11, motor box;110, guide sliding hole;12, locking slide;20, advance and retreat mechanism;201, advance and retreat driver;202, steering assembly;2021, transmission arm;2022, swing seat;203, transmission assembly;2031, first pipe;2032, second pipe;2033, telescopic spring;2034, transmission seat;204, advance and retreat seat;2041, advance and retreat sliding hole;205, fixed shaft;206, sliding shaft;30, first locking head;31, second locking head;32, rotation locking piece;320, locking jaw;321, rotation convex rib;3210, rotation inclined surface;33, buffer;34, protection seat;d, locked part. DETAILED DESCRIPTION

[0032] Next, the utility model is further described in combination with the drawings and specific embodiments, and it should be explained that, under the premise of not conflicting, the following described each embodiment or each technical feature between can be combined to form new embodiment.

[0033] As Figures 1-4As shown in the figure, a compact locking device for locking the output shaft of a driver such as a motor, the compact locking device comprising a motor box 11, a locking slide 12, a locking driver 10, a locking head and a forward and backward mechanism 20, wherein the locking driver 10 provided by the embodiment of the application is preferably a motor, one end of the motor box 11 is provided with a mounting hole, when the locking driver 10 is slidably mounted in the motor box 11, the output end of the locking driver 10 can extend out of the mounting hole, and the mounting hole can also provide a certain space for the locking driver 10 to move forward and backward.

[0034] As shown in the figure, Figure 2 The motor box 11 is provided with two guide sliding holes 110 arranged in the forward and backward direction of the locking driver 10, the locking driver 10 is arranged on the locking slide 12 and is slidably mounted on the guide sliding hole 110 through the locking slide 12, so that the locking driver 10 can reciprocatingly slide forward and backward along the guide sliding hole 110 through the locking slide 12, and the guide sliding hole 110 can improve the stability of the locking driver 10 sliding forward and backward in the motor box 11, thereby improving the locking and loosening action effect on the locked part d.

[0035] The locking head has a first locking head 30 and a second locking head 31, the first locking head 30 is mounted on the driving shaft of the locking driver 10, so that the first locking head 30 slides forward and backward together with the locking driver 10. The second locking head 31 is mounted on the locked part d, the locked part d of the embodiment of the application is a driver with a rotary output shaft, for example, the output shaft of a motor.

[0036] As shown in the figure, Figures 1-2 The forward and backward mechanism 20 is connected with the locking driver 10, so that the forward and backward mechanism 20 can drive the locking driver 10 to move forward along the guide sliding hole 110 of the motor box 11 towards the locked part d or to move backward in the opposite direction. When the locking driver 10 moves forward towards the locked part d, the first locking head 30 gradually approaches the second locking head 31, until the first locking head 30 and the second locking head 31 are in close contact, the locking driver 10 drives the first locking head 30 to rotate and gradually lock with the second locking head 31.

[0037] In order to further improve the assembly stability and locking tightness of the first locking head 30 and the second locking head 31, a protective seat 34 is movably arranged on the first locking head 30 and the second locking head 31, the first locking head 30 and the second locking head 31 can freely rotate on the protective seat 34, and when the first locking head 30 and the second locking head 31 are locked, their protective seats 34 are also tightly overlapped.

[0038] As shown in the figure, Figures 2-4As shown, preferably, each of the first locking head 30 and the second locking head 31 has a screw-in locking member 32 on its opposing locking sides. The screw-in locking member 32 includes a locking claw 320 and a screw-in rib 321. At least two locking claws 320 are provided, and the two locking claws 320 are generally hook-shaped. Several screw-in ribs 321 are provided at intervals around the first locking head 30 and the second locking head 31. The screw-in ribs 321 on the first locking head 30 and the second locking head 31 are arranged in opposite directions. Moreover, the screw-in end of the screw-in rib 321 is provided with a screw-in inclined surface 3210, which is gradually inclined towards the inside of the first locking head 30 or the second locking head 31.

[0039] Therefore, when the first locking head 30 contacts the second locking head 31, the locking driver 10 drives the first locking head 30 to rotate, so that the locking claw 320 of the first locking head 30 rotates and slides along the screw-in inclined surface 3210 of the screw-in protrusion 321 of the second locking head 31 until the locking claw 320 slides to the middle position of the back side of the screw-in protrusion 321; similarly, the locking claw 320 of the second locking head 31 rotates and slides along the screw-in inclined surface 3210 of the screw-in protrusion 321 of the first locking head 30 until the locking claw 320 slides to the middle position of the back side of the screw-in protrusion 321. This achieves the purpose of gradually rotating and locking the first locking head 30 and the second locking head 31. Furthermore, through the locking method of the locking claw 320 and the screw-in protrusion 321, the first locking head 30 and the second locking head 31 are quickly aligned and connected to the lock. Unlocking can be achieved simply by driving the first locking head 30 to rotate in the opposite direction through the locking driver 10. The operation is simple and convenient.

[0040] Preferably, a buffer 33 is provided on the opposing locking sides of the first locking head 30 and / or the second locking head 31. The buffer 33 can be an elastic object such as a plastic pad or a rubber pad. By providing the buffer 33, the impact force when the first locking head 30 and the second locking head 31 come into close contact can be reduced, preventing excessive collision force from damaging the equipment and improving the service life of the locking head.

[0041] like Figures 1-2 As shown, the forward / reverse mechanism 20 provided in this embodiment of the application includes a forward / reverse seat 204, a forward / reverse driver 201, a steering assembly 202, and a transmission assembly 203. The forward / reverse seat 204 is generally groove-shaped and is fixedly installed on one side of the motor housing 11. The forward / reverse driver 201 and the steering assembly 202 are both installed on the forward / reverse seat 204, thereby arranging the forward / reverse driver 201 and the steering assembly 202 side by side on one side of the locking driver 10. The forward / reverse seat 204 is provided with a forward / reverse sliding hole 2041, which is arc-shaped.

[0042] More specifically, the steering assembly 202 has a transmission arm 2021 and a swing seat 2022, and the transmission assembly 203 has a first pipe 2031, a second pipe 2032 and an extension spring 2033. When the steering assembly 202 is installed, one end of the swing seat 2022 is movably connected to the in-out seat 204 through a fixed shaft 205, the other end of the swing seat 2022 is slidably assembled on the in-out sliding hole 2041 of the in-out seat 204 through a sliding shaft 206, one end of the first pipe 2031 is also connected to the swing seat 2022 through the sliding shaft 206, and the output end of the in-out driver 201 is connected to the sliding shaft 206 through the transmission arm 2021, thereby driving the swing seat 2022 to swing on the in-out sliding hole 2041, and then driving the first pipe 2031.

[0043] Therefore, when the in-out driver 201 drives the steering assembly 202 to reciprocate along the in-out sliding hole 2041, the first pipe 2031 is driven to move in and out synchronously.

[0044] When the transmission assembly 203 is installed, one end of the first pipe 2031 is fixedly connected to the swing seat 2022 of the steering assembly 202, the diameter of the first pipe 2031 is greater than that of the second pipe 2032, and one end of the second pipe 2032 is movably sleeved in the first pipe 2031, so that the second pipe 2032 can slide into or out of the first pipe 2031 under the action of an external force.

[0045] Then the other end of the second pipe 2032 is connected with a transmission seat 2034, which is slidably installed on the guide sliding hole 110 of the motor box 11 and fixedly connected with the locking sliding seat 12 for installing the locking driver 10, thereby enabling the locking driver 10 to reciprocate along the guide sliding hole 110 together with the transmission seat 2034.

[0046] The extension spring 2033 is sleeved outside the first pipe 2031 and the second pipe 2032, one end of the extension spring 2033 is fixedly connected to the swing seat 2022, and the other end of the extension spring 2033 is fixedly connected to the transmission seat 2034. Therefore, the first pipe 2031, the second pipe 2032 and the extension spring 2033 are arranged side by side with the locking driver 10, and the movement direction of the entire transmission assembly 203 is the in-out direction of the locking driver 10, thereby making the assembly structure of the in-out driver 201, the locking driver 10 and the transmission assembly 203 more compact, which is beneficial to the miniaturization design of the locking device and does not occupy the axial space of the locked piece d.

[0047] Therefore, under the driving of the advancing and retreating driver 201, the swing base 2022 is synchronously driven to slide the telescopic spring 2033 when sliding in the locking direction of the advancing and retreating sliding hole 2041, so that the telescopic spring 2033 pushes the transmission base 2034 and the locking driver 10 to slide on the guide sliding hole 110 in the direction of the locked member d by the elastic force of the telescopic spring 2033 until the first locking head 30 contacts the second locking head 31. When the telescopic spring 2033 is compressed to a certain extent, the locking driver 10 can be pushed by the first pipe 2031 and the second pipe 2032, and the first pipe 2031 and the second pipe 2032 can also prevent the telescopic spring 2033 from being twisted and deformed. Then the locking driver 10 drives the first locking head 30 to rotate and screw into the second locking head 31.

[0048] Compared with the implementation means of the friction brake in the prior art, the locking effect is more firm and better, and the locking device is especially suitable for use in a large equipment and a high load scene, and does not need to frequently replace consumables such as a friction layer, thereby saving costs.

[0049] When the first locking head 30 and the second locking head 31 need to be unlocked, the locking driver 10 drives the first locking head 30 to rotate and unscrew from the second locking head 31, and under the elastic contraction of the telescopic spring 2033, the locking driver 10 and the first locking head 30 retreat and reset along the guide sliding hole 110, so as to prevent the first locking head 30 from interfering with the first locking head 30 and the locked member d. Compared with the implementation means of the friction brake in the prior art, the locking device provided in the embodiment of the application can automatically reset to avoid interference with the locked member d after unlocking, and the safety effect is better, and the locking and unlocking execution capability of the locking device is improved.

[0050] The specific locking working process of the locking device provided in the embodiment of the application is as follows:

[0051] First, the transmission arm 2021 is driven by the advancing and retreating driver 201, the transmission arm 2021 drives the swing of the swing base 2022 along the advancing and retreating sliding hole 2041, and the swing base 2022 synchronously drives the first pipe 2031, the second pipe 2032 and the telescopic spring 2033;

[0052] Then, under the pushing action of the telescopic spring 2033 or the first pipe 2031 and the second pipe 2032, the locking driver 10 follows the transmission base 2034 to slide along the guide sliding hole 110 of the motor box 11 in the direction of the locked member d, and then the first locking head approaches and contacts the second head of the locked member d;

[0053] Finally, the locking driver 10 drives the first locking head 30 to rotate and screw into the locking card of the rotating convex rib 321 through the locking jaw 320, and then the first locking head 30 and the second locking head 31 are gradually locked;

[0054] When being unlocked, the locking driver 10 drives the first locking head 30 to rotate reversely until the locking claw 320 rotates out of the back side of the spiral convex rib 321, so that the first locking head is separated from the second locking head 31; at this time, due to the contraction elastic effect of the extension spring 2033, the locking driver 10 slides backward along the direction of the guide sliding hole 110, and then the locking driver 10 and the first locking head 30 are pulled back by a certain distance, and the swing seat 2022 also slides backward along the advance and retreat sliding hole 2041 by a certain distance, so as to avoid the interference of the first locking head to the work of the second locking head and the locked member d.

[0055] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A compact locking device, characterized in that, It includes a locking driver, a locking head, and a forward / backward mechanism. The locking head has a first locking head connected to the drive shaft of the locking driver and a second locking head connected to the locked member. The opposing locking sides of the first locking head and the second locking head each have a screw-in locking member for rotational locking. The forward and backward mechanism has a forward and backward drive, a steering component, and a transmission component. The forward and backward drive is arranged side by side on one side of the locking drive. The output end of the forward and backward drive is connected to the steering component, and the steering component is connected to the locking drive through the transmission component, so that the locking drive approaches the locked part under the drive of the forward and backward drive and drives the first locking head to rotate and the second locking head to be rotated and locked through the screw-in locking component.

2. The compact locking device as described in claim 1, characterized in that, The screw-in locking member includes a locking claw and a screw-in rib. The screw-in ribs on the opposing locking sides of the first locking head and the second locking head have opposite rotation directions. The screw-in end of the screw-in rib has a screw-in inclined surface that gradually slopes inward toward the inside of the first locking head or the second locking head, so that the locking claw locks onto the back side of the screw-in rib along the screw-in inclined surface and locks the first locking head and the second locking head.

3. The compact locking device as described in claim 1, characterized in that, A buffer is provided on the opposing locking sides of the first locking head and / or the second locking head.

4. The compact locking device as described in claim 1, characterized in that, The transmission assembly is arranged in parallel between the locking driver and the forward / reverse driver.

5. The compact locking device according to any one of claims 1-4, characterized in that, The transmission assembly has a first tube, a second tube, and a telescopic spring. The first tube is fixedly connected to the steering assembly. One end of the second tube is movably sleeved with the first tube, and the other end of the second tube is fixedly connected to the locking driver. The telescopic spring is sleeved on the outside of the first pipe and the second pipe, and the two ends of the telescopic spring are respectively connected to the steering assembly and the locking driver, so that the telescopic spring, driven by the forward and backward driver, elastically pushes the first locking head on the locking driver closer to the second locking head, or elastically pulls the first locking head on the locking driver away from the second locking head.

6. The compact locking device according to any one of claims 1-4, characterized in that, The forward and backward mechanism has a forward and backward seat with forward and backward sliding holes. The forward and backward drive and the steering assembly are disposed on the forward and backward seat. The steering assembly reciprocates along the arrangement direction of the forward and backward sliding holes under the drive of the forward and backward drive and drives the locking drive through the transmission assembly.

7. The compact locking device as described in claim 6, characterized in that, The steering assembly has a transmission arm and a swing seat. One end of the swing seat is movably connected to the forward / reverse seat via a fixed shaft, and the other end of the swing seat is connected to the transmission assembly and slidably mounted on the forward / reverse sliding hole via a sliding shaft. The output end of the forward / reverse drive is connected to the swing seat via the transmission arm.

8. The compact locking device according to any one of claims 1-4, characterized in that, The locking device includes a motor housing and a locking slide. The motor housing has a guide slide hole along the forward and backward direction of the locking driver. The locking driver is mounted on the locking slide and is slidably installed on the guide slide hole of the motor housing through the locking slide.

9. The compact locking device as described in claim 8, characterized in that, One end of the transmission assembly is connected to a transmission seat that can be slidably mounted on a guide hole in the motor housing, and the transmission seat is fixedly connected to the locking slide.

10. The compact locking device according to any one of claims 1-4, characterized in that, Protective seats are movably fitted onto the first locking head and the second locking head.

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