Cold storage door with clutch device

Abstract

The cold storage door with a clutch device has a clutch transmission mechanism including a power output shaft, one end of which is provided with an active power output gear, which drives the power output shaft to rotate; an electromagnetic clutch is also provided on the shaft body of the power output shaft, and the electromagnetic clutch can be connected and separated with the power output sprocket at the other end of the power output shaft; the power output sprocket drives the door panel to translate by driving the transmission chain; the electromagnetic clutch device and the door panel are respectively two groups, and the two power output gears of the two groups of electromagnetic clutch devices are meshed with each other, and one of the power output gears is meshed with the transmission gear; the motor drives the transmission gear, and then drives the two power output gears to rotate. It not only solves the problem of opening the door to escape in an emergency, but also solves the problem of the cold storage door realizing the opening and closing of any door panel at any position of a single or double door, achieving the goal of environmental protection and energy saving.

Description

Technical Field

[0001] The invention relates to the field of high-speed sliding doors for cold storages, in particular to a cold storage door with a clutch device. Background Art

[0002] How to effectively ensure the low temperature effect in the cold storage door system, especially when people enter and exit, it is necessary to ensure the cooling efficiency in the warehouse and reduce the cold leakage caused by opening the door, which is a technical problem that the industry urgently needs to solve. At present, in the cold storage system, in order to slow down the outflow of cold air, air curtain machine profile wind wall is usually added above the door to reduce the loss of cold air. In addition, measures such as strengthening the sealing around the door are also required, including when the door moves. In terms of transmission mechanism, some cold storage doors on the market currently use electromagnetic clutches in conjunction with motors and chains for power control and transmission, but the structure is more complex and the transmission efficiency is low. Summary of the invention

[0003] The present invention aims to solve the existing problems and provide a cold storage door with a clutch device.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention includes a power output shaft, one end of which is provided with an active power output gear, and the power output gear drives the power output shaft to rotate; an electromagnetic clutch is also provided on the shaft body of the power output shaft, and the electromagnetic clutch can be engaged and separated with the power output sprocket at the other end of the power output shaft.

[0005] The invention also includes an encoder, which is fixed on the power output sprocket and rotates synchronously with the power output sprocket. The invention also includes a motor, which drives a transmission gear, and the transmission gear is meshed with the power output gear.

[0006] Wherein, it also includes a speed reduction mechanism, wherein one end of the speed reduction mechanism is connected to the transmission gear, and the other end is connected to the output shaft of the motor.

[0007] The armature of the electromagnetic clutch is engaged or disconnected with the electromagnetic clutch rotating disk, and the armature of the electromagnetic clutch is fixedly connected to the transmission output sprocket.

[0008] Among them, two rolling bearings are arranged inside the transmission output sprocket and are limited by elastic retaining rings through the holes. Its end face is fixed to the armature of the electromagnetic clutch by bolts, and the gap between the armature of the electromagnetic clutch and the moving plate of the electromagnetic clutch is adjusted by adjusting the gasket.

[0009] The present invention also provides a clutch device, comprising the above-mentioned clutch transmission mechanism.

[0010] The yoke of the electromagnetic clutch is fixed to the fixed bracket through a connecting plate, the moving plate of the electromagnetic clutch is connected to the transmission shaft through a flat key, and the armature of the electromagnetic clutch is fixed to the transmission output sprocket through bolts. The present invention also provides a cold storage door, including the above-mentioned clutch device and a corresponding door panel; the power output sprocket drives the door panel to translate by driving the transmission chain.

[0011] There are two electromagnetic clutch devices and two door panels respectively, and the two power output gears of the two sets of electromagnetic clutch devices are meshed with each other, and one of the power output gears is meshed with the transmission gear; the motor drives the transmission gear, thereby driving the two power output gears to rotate;

[0012] Among them, the transmission gear ratio of the two power output gears is 1:1.

[0013] Wherein, the door panel is provided with a chain power combining device and connected with a chain, and the door panel is provided with a pulley assembly, and the pulley on the pulley assembly is placed in a guide rail and slides left and right along the guide rail.

[0014] Compared with the prior art, the present invention installs the gear on the power output shaft of the reduction motor, directly transmits the power of the reduction motor to the transmission gear on one side of the electromagnetic clutch mechanism, and the transmission gear then transmits the power in reverse to the gear on the other end of the electromagnetic clutch through the double gear meshing design of the electromagnetic clutch mechanism. The two transmission gears transmit the power to the two electromagnetic clutches respectively through a separate power output shaft, and the electromagnetic clutch then transmits the power to the power output sprocket, and the sprocket drives the chain, guide pulley, and sliding door to move, so that the double-opening door obtains reverse, separate, and controllable power, and realizes the opening and closing action of the double-opening door at any position.

[0015] The present invention not only solves the problem of manually opening the door and escaping by disconnecting the power supply of the clutch in an emergency through the electromagnetic clutch mechanism, but also solves the problem of opening and closing any door panel of the cold storage door at any position for single or double opening, thus achieving the goal of environmental protection and energy saving. At the same time, because the internal power of the electromagnetic clutch mechanism adopts gear connection transmission, the transmission efficiency is greatly improved and the noise is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of an embodiment of the invention;

[0017] Figure 2 It is a structural schematic diagram of a clutch transmission mechanism;

[0018] Figure 3 It is a schematic diagram of the structural disassembly of the clutch transmission mechanism;

[0019] Figure 4 It is a structural cross-sectional view of the clutch transmission mechanism;

[0020] Figure 5 It is a structural schematic diagram of another embodiment of the present invention;

[0021] Figure 6 It is a structural diagram of an independent double-opening cold storage door system;

[0022] Referring to the attached drawings, 101, guide rail supporting bottom plate; 102, track; 103, guide rail fixing bracket; 104, motor; 105, speed reduction mechanism; 106, motor power output shaft; 107, transmission gear; 108, power output gear A; 109, power output gear B; 110, gear fixing bracket; 111, power output shaft A; 112, power output shaft B; 113, electromagnetic clutch A; 114, electromagnetic clutch B; 115 power output sprocket A; 116, power output sprocket B; 117, encoder A connecting flange; 118, encoder B connecting flange encoder; 119, encoder A; 120, encoder B; 121, encoder A fixing bracket; 122, encoder B fixing bracket; 123, right door transmission chain; 124, left door transmission chain; 125, speed reduction motor fixing bracket; 126. Right door chain fixing bracket; 127. Left door chain fixing bracket; 140. Drive shaft rolling bearing; 141. Drive gear gasket; 142. Flat key; 143. Electromagnetic clutch adjustment gasket; 144. Output sprocket bearing; 145. Electromagnetic clutch armature; 146. Pulley; 147. Pulley shaft; 148. Pulley bracket; 149. Nut; 150. Connecting shaft adjustment bolt; 151. Sliding door connecting shaft; 160. Motor drive pulley; 161. Drive timing belt; 163. Clutch device pulley; 164. Guide rail fixing bracket 2; 180. Electromagnetic clutch device; 181. Pulley assembly; 182. Chain power combining device; 200. Implementation case module of the independent double-opening cold storage door system in this case; 201. Door frame left support column; 202. Door frame right support column; 203. Left door; 204. Right door. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention is further described in conjunction with the accompanying drawings.

[0024] The present invention discloses an independent double-opening cold storage door system, wherein a reduction motor is installed at the upper end of a guide rail, and a gear, a sprocket, or a synchronous belt pulley can be installed on the output shaft of the reduction motor for power output; the electromagnetic clutch device is installed at the middle position of the upper end of the guide rail, and is connected to the reduction motor for power through a gear, a chain, or a synchronous belt; a sprocket is fixedly installed at the output end of the electromagnetic clutch device, and the sprockets on both sides drive independent chains on both sides for transmission, and power is output to the two chains respectively through the sprockets; a chain power coupling device is installed at the middle position of the left and right sliding doors, and pulley assemblies are installed on both sides, and the pulleys on the pulley assemblies are placed in the guide rails and can slide left and right, and the chain power is transmitted to the left and right sliding doors through the chain power coupling device and the pulley assembly.

[0025] Preferably, the output shaft end of the reduction motor should adopt gear connection as much as possible to output power directly to the electromagnetic clutch mechanism, so that the transmission efficiency is higher and the noise is lower.

[0026] Preferably, the electromagnetic clutch device transmits the power of the power output conversion device to two transmission shafts through a group of transmission gears, and then the transmission shafts output the power to the rotating disks of the two electromagnetic clutches respectively; by controlling the electromagnetic clutch, the armature of the electromagnetic clutch can be attracted or disconnected with the rotating disk of the electromagnetic clutch, wherein the armature of the electromagnetic clutch is fixed to the transmission output sprocket, so that the power can drive the chain, guide pulley and sliding door to move.

[0027] Preferably, the electromagnetic clutch device has a modular structure. When it is a single door, only one electromagnetic clutch device can be used; when it is a double door, one set of electromagnetic clutch devices can be used; when it is three or more doors, multiple sets of electromagnetic clutch devices can be used.

[0028] Preferably, the dual clutch device has orderly internal power transmission and uses a group of gear meshing to transmit power, so that the transmission efficiency can be optimized. At the same time, the structure is compact, the noise is low, and it is easy to maintain.

[0029] Preferably, the outer diameter of the transmission gear in the electromagnetic clutch mechanism is larger than the outer diameter of the sprocket, so that when the transmission gear and the sprocket are installed on the same transmission shaft, the sprocket chain will not interfere with each other.

[0030] Preferably, the transmission gear ratio in the electromagnetic clutch mechanism is 1:1, so as to ensure that the speed of the double doors is consistent and easy to maintain.

[0031] Preferably, the transmission gear and the electromagnetic clutch moving plate in the electromagnetic clutch mechanism are preferably fixed to the transmission shaft, such as using a flat key for radial limitation and a washer for axial limitation, so that the power can be transmitted to the electromagnetic clutch in real time and efficiently.

[0032] Preferably, the transmission gear in the electromagnetic clutch mechanism has fixed supports on both sides, the transmission gear is installed on the transmission shaft, and the transmission shaft is installed with rolling bearings on both sides of the transmission gear, and the rolling bearings are installed on fixed brackets. In this way, the transmission gear can operate smoothly and reliably.

[0033] Preferably, the fixed bracket in the dual electromagnetic clutch mechanism is preferably an integrated piece, and the fixed bracket is located on both sides of the transmission gear, and the lower end is fixed to the guide rail. In this way, it can ensure that the distance between the two gears does not need to be adjusted, and the structure is more compact and maintenance is more convenient.

[0034] Preferably, in the electromagnetic clutch mechanism, the yoke of the electromagnetic clutch is fixed to the fixed bracket via a connecting plate, the moving plate of the electromagnetic clutch is connected to the transmission shaft via a flat key, and the armature of the electromagnetic clutch is fixed to the transmission output sprocket via bolts.

[0035] Preferably, the transmission output sprocket is internally installed with two rolling bearings and is limited by an elastic retaining ring through a hole, the end face is fixed to the armature of the electromagnetic clutch by bolts, and the gap between the armature of the electromagnetic clutch and the moving plate of the electromagnetic clutch is adjusted by adjusting the gasket. In this way, the electromagnetic clutch and the transmission output sprocket can be ensured to work stably and reliably.

[0036] Preferably, the transmission output sprocket in the electromagnetic clutch mechanism is provided with an encoder on its outer side, and the encoder rotating disk rotates together with the transmission output sprocket. In this way, when the electromagnetic clutch slips, the position of the sliding door can still be accurately obtained.

[0037] Preferably, the encoder rotating disk is fixed by an encoder flange, and the encoder housing is fixed by an encoder fixing bracket, so that the encoder can be installed and disassembled as an independent component.

[0038] See also Figure 1-4 , Figure 1-4 What is shown is an embodiment of the present invention, in which the guide rail is fixed to the bottom of the guide rail support by a guide rail fixing bracket, and the bottom of the guide rail support can be fixed to a wall or a steel structure by a bolt bracket. The motor drive gear transmits power through the motor and inputs it into the electromagnetic clutch device. The electromagnetic clutch device is installed at the center of the guide rail by bolts. The translational left door is connected through the pulley assemblies on both sides and the middle chain power coupling device, wherein the pulley assembly is placed in the guide rail, and the chain power coupling device is fixed to the left door drive chain, so that when the drive chain moves, it will be guided by the power coupling device and the pulley assembly. Similarly, the translational right door is connected through the pulley assemblies on both sides and the middle chain power coupling device, and is driven by the drive chain.

[0039] Referring to the figure, the motor drives the motor transmission output shaft to rotate after increasing the torque through the reduction mechanism, and the transmission gear is fixed on the motor transmission output shaft by bolts, so that the motor directly outputs the power to the transmission gear. The transmission gear is meshed with the power output gear A; at the same time, the power output gear A and the power output gear B are also meshed with each other, so that the power of the motor is brought into the two power output shafts A and B in the electromagnetic clutch device through gear transmission, and then the two power output shafts A and B will respectively drive the electromagnetic clutch A and B to work, and the power output sprocket A and the power output sprocket B are respectively fixed on the electromagnetic clutch A and the electromagnetic clutch, so that the power will be output to the power output sprocket A and the power output sprocket B respectively through the control of the electromagnetic clutch.

[0040] See also Figure 3-4 , the gear fixing bracket is fixed on the guide rail by bolts, that is, the structure of the entire clutch device is supported and stressed by the gear fixing bracket, and serves as the external installation interface of the module. Since the two clutch sprocket power systems of the clutch device have the same structure, only one of the clutch devices is described below: the power output shaft is fixed to the power output gear and the electromagnetic clutch by two flat keys. In this way, the gear power is transmitted to the clutch; the inner end face and the middle position of the power output shaft are respectively provided with rolling bearings for supporting and balancing the gear transmission system. The power output gear is provided with limited spacers on both sides for fixing the axial position of the gear. An adjustment spacer is installed on the outside of the electromagnetic clutch for adjusting the gap between the electromagnetic clutch moving plate and the clutch armature, so that the electromagnetic clutch can operate reliably. The power output sprocket is fixed to the clutch armature by bolts, and two output sprocket rolling bearings are installed inside the power output sprocket, which are mainly used to balance the sprocket and ensure concentricity. The encoder uses a flat key or bolt to fix its rotating shaft to the encoder connection flange, and the encoder housing is fixed to the guide rail through the encoder fixing bracket; the encoder connection flange is fixed to the outside of the power output sprocket, so that the encoder can achieve real-time synchronous movement with the transmission sprocket, and can encode clutch slippage and other defects. At the same time, the clutch module can be maintained and replaced by removing the bolts connected to the power output sprocket, which is convenient and quick.

[0041] Figure 5 This is a partial structural diagram of an independent double-opening cold storage door system of another embodiment. This embodiment mainly adjusts the motor installation position. Specifically, as described below, the motor drive gear in the above embodiment is replaced with a motor drive pulley or sprocket, and a transmission synchronous belt or chain is added, and a clutch device pulley or sprocket is installed inside the power output gear of the clutch device. In this way, the motor can be adjusted to any position, and power can be transmitted through the drive pulley or sprocket, which facilitates the restriction of spatial position for each project.

[0042] Figure 6 This is a structural schematic diagram of an independent double-opening cold storage door system provided in an embodiment of the present invention. The electromagnetic clutch device and the entire transmission system are located at the upper end of the sliding door, and the overall structure is supported and fixed by the left and right support columns of the door frame. The independent double-opening cold storage door system can realize the independent operation or stop of the chains at both ends of the electromagnetic clutch device through software and hardware control, even if the left and right doors of the double-opening translation obtain reverse, independent, and controllable power respectively, to realize the switching action of the double-opening door at any position. And in an emergency, the power supply of the clutch can be disconnected, so that the door can be opened manually to escape, so that the safety performance of the system is greatly improved.

[0043] The above embodiment can choose to open and close the left or right door separately or open both doors at the same time according to the different types and specifications of people, goods, forklifts, etc., so as to reduce the cold load dissipation in the cold storage, improve cooling efficiency, and reduce energy loss. The above embodiment adopts a dual clutch system to control the opening and closing of the left or right door separately, and the opening and closing of both doors at the same time, so as to reduce the loss of cold flow. In addition, when there is a power outage or the emergency button is pressed, the clutch loses power, the cold storage door is disconnected from the motor system, and the operator can manually open the cold storage door to escape, avoiding personal accidents caused by the cold storage door. Compared with the cold storage door system currently used in the market, the above embodiment has the characteristics of simple structure, convenient maintenance, and easy operation.

[0044] The above describes the implementation mode of the present invention in combination with the drawings and embodiments. The structure given in the embodiments does not constitute a limitation of the present invention. Those skilled in the art can make adjustments as needed. Various deformations or modifications made within the scope of the attached claims are within the scope of protection.

Claims

1. A cold storage door with a clutch device, characterized in that: The clutch transmission mechanism of the clutch device includes a power output shaft, one end of which is provided with an active power output gear, and the power output gear drives the power output shaft to rotate; An electromagnetic clutch is also provided on the shaft body of the power output shaft, and the electromagnetic clutch can be engaged or disengaged with the power output sprocket at the other end of the power output shaft; the power output sprocket drives the door panel to translate by driving the transmission chain; The electromagnetic clutch device and the door panel are respectively divided into two groups. The two power output gears of the two groups of electromagnetic clutch devices are meshed with each other, and one of the power output gears is meshed with the transmission gear; the motor drives the transmission gear, and then drives the two power output gears to rotate.

2. The cold storage door with a clutch device according to claim 1, characterized in that: The utility model also comprises an encoder, which is fixed on the power output sprocket and rotates synchronously with the power output sprocket.

3. The cold storage door with a clutch device according to claim 1, characterized in that: It also includes a motor, which drives a transmission gear, and the transmission gear is meshed with the power output gear.

4. The cold storage door with a clutch device according to claim 3, characterized in that: It also includes a speed reduction mechanism, one end of which is connected to the transmission gear, and the other end of which is connected to the output shaft of the motor.

5. The cold storage door with a clutch device according to claim 1, characterized in that: The armature of the electromagnetic clutch is engaged or disconnected with the electromagnetic clutch rotating disk, wherein the armature of the electromagnetic clutch is fixedly connected to the transmission output sprocket.

6. The cold storage door with a clutch device according to claim 1, characterized in that: Two rolling bearings are arranged inside the transmission output sprocket and are limited by elastic retaining rings through holes. The end face is fixed to the armature of the electromagnetic clutch by bolts, and the gap between the armature of the electromagnetic clutch and the moving plate of the electromagnetic clutch is adjusted by adjusting the gasket.

7. The cold storage door with a clutch device according to claim 1, characterized in that: The yoke of the electromagnetic clutch is fixed on the fixed bracket through a connecting plate, the moving plate of the electromagnetic clutch is connected to the transmission shaft through a flat key, and the armature of the electromagnetic clutch is fixed to the transmission output sprocket through bolts.

8. The cold storage door with a clutch device according to claim 1, characterized in that: The transmission gear ratio of the two power output gears is 1:

1.

9. The cold storage door with a clutch device according to claim 1, characterized in that: The door panel is provided with a chain power combining device and connected with a chain, and a pulley assembly is installed on the door panel. The pulley on the pulley assembly is placed in a guide rail and slides left and right along the guide rail.

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