Roller shutter door chain tensioning automatic adjusting mechanical device

Abstract

The utility model discloses a roller shutter door chain tensioning automatic adjusting mechanical device and a tensioning mechanism, the roller shutter door chain tensioning automatic adjusting mechanical device comprises a tensioning assembly arranged on the front side of a supporting plate, the tensioning assembly comprises an adjusting groove formed in the front side of the supporting plate, the surface of the adjusting groove is fixedly connected with a fixing rod, the surface of the fixing rod is provided with an extrusion part, and the extrusion part is fixedly connected with the supporting plate. When the chain is loosened due to abrasion or temperature change, the extrusion spring pushes the pressing wheel to move downwards through elastic deformation and continuously abuts against the outer side of the chain, and the loosening amount is compensated; a mechanical locking structure of the reset spring and the positioning rod keeps the tension stable during normal operation; when the sensing piece monitors that the looseness of the chain is large in real time, locking of the positioning rod is relieved by pulling the pull block, the elastic force of the reset spring drives the reset plate to move upwards, the reset plate drives the extrusion spring and the pressing wheel to rapidly reset to the initial position, the extrusion state of the chain can be relieved without a tool, and replacement and overhaul of the chain are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of rolling slats door chain, especially relates to rolling slats door chain tension automatic regulation mechanical device. BACKGROUND

[0002] As the opening and closing equipment commonly used in industrial and civil buildings, the reliability of the chain transmission system of the rolling slats door directly affects the operation safety and service life; the traditional rolling slats door chain tension device generally adopts a manual adjustment mode, adjusts the position of the tensioning wheel through a bolt or a nut, or relies on a fixed spring to provide an initial tensioning force; such device is widely applied in small and medium-sized rolling slats doors, but with the popularity of high-frequency use scenarios (such as logistics warehouses and industrial plants), its inherent defects gradually become prominent.

[0003] When the chain is relaxed due to wear or thermal expansion and cold contraction, the chain can be given an appropriate tension; when the relaxation is too large and needs to be replaced, the replacement operation of personnel is facilitated. UTILITY MODEL CONTENTS

[0004] In view of the problems existing in the prior art, the utility model provides a rolling slats door chain tension automatic regulation mechanical device, which solves the problem that the existing chain can be given an appropriate tension when relaxed due to wear or thermal expansion and cold contraction in frequent use; when the relaxation is too large and needs to be replaced, the replacement operation of personnel is facilitated.

[0005] The utility model is implemented in the following manner: the rolling slats door chain tension automatic regulation mechanical device comprises,

[0006] A supporting mechanism comprising a supporting plate, a motor for transmission is arranged on the rear side of the supporting plate, and the output end of the motor is transmissionally connected with a chain assembly;

[0007] The chain assembly comprises a main sprocket transmissionally connected to the output end of the motor, an auxiliary sprocket is arranged on the left side of the main sprocket, the rear side of the auxiliary sprocket is rotationally connected to the front side of the supporting plate, and the surfaces of the main sprocket and the auxiliary sprocket are transmissionally connected with a chain.

[0008] A tensioning mechanism comprising a tensioning assembly arranged on the front side of the supporting plate, and the tensioning assembly is located at the top of the chain assembly.

[0009] As preferred in the utility model, the tensioning assembly comprises an adjusting groove arranged on the front side of the supporting plate, a fixed rod is fixedly connected to the surface of the adjusting groove, an extrusion component is arranged on the surface of the fixed rod, the adjusting groove defines the movement path of the extrusion component, ensures that the pressing force is always vertically applied to the chain, and avoids uneven tensioning caused by lateral deviation; the fixed rod not only ensures that the extrusion spring is stably stressed, but also reduces the frictional resistance through surface smoothing treatment, so that the extrusion component can flexibly respond to the change of the chain tension.

[0010] As the utility model preferred, the extrusion component includes the extrusion spring of setting in the fixed rod surface, the bottom of extrusion spring is provided with extrusion block, the outside of extrusion block is slidably connected with the inner wall of adjusting groove, the front side of extrusion block is provided with the compression wheel, the surface of compression wheel is in contact with the outside of chain, and extrusion spring provides continuous tension through elastic deformation, when chain is slack, spring elongation pushes extrusion block to descend, and makes compression wheel closely adhere to the outside of chain, when chain tension is too large, extrusion spring compression absorbs the excess stress.

[0011] As the utility model preferred, the bottom of fixed rod is provided with reset spring, the top of reset spring is fixedly connected with reset plate, and the top of reset plate is provided with positioning piece, when chain needs to be replaced, reset spring releases elastic force through positioning piece, and the replacement of chain is convenient.

[0012] As the utility model preferred, the positioning piece includes the positioning slot of setting in the front side of support plate, the front side of positioning slot extends to the front side of support plate, the surface of positioning slot is slidably connected with positioning rod, one side of positioning rod is provided with positioning spring, one side of positioning spring is fixedly connected with the surface of positioning slot, and the top of positioning rod is inclined, and when manual adjustment or chain replacement is needed, positioning rod can be pulled into positioning slot by overcoming the elastic force of positioning spring through pull block, so that the locking state can be released, and the operation is simple and quick.

[0013] As the utility model preferred, the front side of positioning rod is provided with pull block, and the outside of pull block is slidably connected with the inside of positioning slot, the pull block is integrated on the front side of positioning rod, and is slidably connected with the inside of positioning slot, and the locking and unlocking state of positioning rod can be directly controlled by pulling pull block on the front side of support plate by the operator.

[0014] As the utility model preferred, the front side of adjusting groove is provided with sensing piece, and the sensing piece is used for chain slackness sensing, when the slackness of chain exceeds the preset threshold, the control system can automatically trigger alarm, so that the tensioning process is more accurate and timely, the equipment failure caused by chain slackness is effectively prevented, and the safety and automation level of roller shutter door operation are improved.

[0015] Compared with the prior art, the utility model has the advantages of the following:

[0016] The utility model discloses a chain tensioning automatic adjusting mechanical device for roller shutter door, which comprises a supporting mechanism, a tensioning mechanism, an extruding component and a reset spring. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the supporting mechanism schematic diagram provided by the utility model embodiment;

[0018] Figure 2 is the chain assembly schematic diagram provided by the utility model embodiment;

[0019] Figure 3 is the extruding component schematic diagram provided by the utility model embodiment;

[0020] Figure 4 is the utility model embodiment provided Figure 1 the local enlarged schematic diagram of A place in the utility model.

[0021] In the drawing: 100, supporting mechanism;101, support plate;102, motor;103, chain assembly;103a, main sprocket;103b, auxiliary sprocket;103c, chain;200, tensioning mechanism;201, tensioning assembly;201a, adjusting groove;201b, fixed rod;202, extruding component;202a, extruding spring;202b, extruding block;202c, compression wheel;203, reset spring;204, reset plate;205, positioning piece;205a, positioning groove;205b, positioning rod;205c, positioning spring;206, pull block;207, inductive piece. DETAILED DESCRIPTION

[0022] In order to further understand the invention content, characteristics and efficacy of the utility model, the following examples are cited, and the detailed description is as follows in cooperation with the drawings.

[0023] The structure of the utility model will be described in detail below in combination with the drawings.

[0024] As Figures 1 to 4 shown, the utility model embodiment provides a roller shutter door chain tensioning automatic adjusting mechanical device, which comprises,

[0025] The supporting mechanism 100 comprises a support plate 101, the rear side of the support plate 101 is provided with a motor 102 for transmission, and the output end of the motor 102 is transmissionally connected with a chain assembly 103.

[0026] The chain assembly 103 comprises a main sprocket 103a connected to the output end of the motor 102, a secondary sprocket 103b arranged on the left side of the main sprocket 103a, and a chain 103c arranged on the surfaces of the main sprocket 103a and the secondary sprocket 103b.

[0027] The tensioning mechanism 200 comprises a tensioning assembly 201 arranged on the front side of the support plate 101 and located on the top of the chain assembly 103.

[0028] With reference to Figure 1 , 3 and 4, the tensioning assembly 201 comprises an adjusting groove 201a arranged on the front side of the support plate 101, a fixed rod 201b fixedly connected to the surface of the adjusting groove 201a, and an extrusion component 202 arranged on the surface of the fixed rod 201b.

[0029] The adjusting groove 201a defines the movement path of the extrusion component 202, ensures that the pressing force is always perpendicular to the chain 103c, and avoids uneven tensioning caused by lateral deviation.

[0030] With reference to Figure 3 , the extrusion component 202 comprises an extrusion spring 202a sleeved on the surface of the fixed rod 201b, an extrusion block 202b arranged at the bottom of the extrusion spring 202a, and a pressing wheel 202c arranged on the front side of the extrusion block 202b.

[0031] The extrusion spring 202a provides continuous tensioning force through elastic deformation. When the chain 103c is relaxed, the spring elongates to push the extrusion block 202b downward, so that the pressing wheel 202c tightly contacts the outer side of the chain 103c. Conversely, when the tensioning force of the chain 103c is too large, the extrusion spring 202a is compressed to absorb the excess stress.

[0032] With reference to Figure 3 , 4 A reset spring 203 is sleeved on the bottom of the fixed rod 201b, a reset plate 204 is fixedly connected to the top of the reset spring 203, and a positioning member 205 is arranged on the top of the reset plate 204.

[0033] Adopt the above scheme: when the chain 103c needs to be replaced, the reset spring 203 releases the elastic force through the positioning piece 205, facilitating the replacement of the chain 103c.

[0034] Reference Figure 4 The positioning piece 205 comprises a positioning groove 205a formed on the front side of the support plate 101, the front side of the positioning groove 205a extends to the front side of the support plate 101, and a positioning rod 205b is slidably connected to the surface of the positioning groove 205a, one side of the positioning rod 205b is provided with a positioning spring 205c, one side of the positioning spring 205c is fixedly connected to the surface of the positioning groove 205a, and the top of the positioning rod 205b is inclined.

[0035] Adopt the above scheme: when manual adjustment or replacement of the chain 103c is required, the positioning rod 205b can be pulled into the positioning groove 205a by overcoming the elastic force of the positioning spring 205c through the pull block 206, so that the locking state is released, and the operation is simple and quick.

[0036] Reference Figure 4 The front side of the positioning rod 205b is provided with a pull block 206, and the outer side of the pull block 206 is slidably connected to the inner side of the positioning groove 205a.

[0037] Adopt the above scheme: by integrating the pull block 206 on the front side of the positioning rod 205b and slidably matching the pull block 206 with the inner side of the positioning groove 205a, the operator can directly control the locking and unlocking states of the positioning rod 205b by pulling the pull block 206 on the front side of the support plate 101.

[0038] Reference Figure 4 The front side of the adjusting groove 201a is provided with a sensing piece 207, and the sensing piece 207 is used for sensing the slackness of the chain 103c.

[0039] Adopt the above scheme: when the slackness of the chain 103c exceeds the preset threshold, the control system can automatically trigger an alarm, so that the tensioning process is more accurate and timely, effectively prevents equipment failure caused by the slackness of the chain 103c, and improves the safety and automation level of the operation of the roller shutter door.

[0040] The working principle of the utility model is:

[0041] When the tensioning automatic adjusting device is used,

[0042] The motor 102 is fixed to the rear side of the support plate 101, and the output end thereof is connected to the main sprocket 103a. The auxiliary sprocket 103b is installed on the front side of the support plate 101 through a rotating shaft and is kept at a certain distance from the main sprocket 103a. The chain 103c is wound around the main sprocket 103a and the auxiliary sprocket 103b to form a transmission loop. The fixed rod 201b of the tensioning mechanism 200 is vertically installed in the adjusting groove 201a. The compression spring 202a is sleeved on the upper part of the fixed rod 201b, and the bottom thereof is connected to the extrusion block 202b. The outer side of the extrusion block 202b is in sliding fit with the inner wall of the adjusting groove 201a. The compression wheel 202c on the front side is in close contact with the outer side of the chain 103c. In the initial state, the compression spring 202a provides a pre-tightening force to ensure that the chain 103c is moderately tensioned.

[0043] When the chain 103c is loosened due to wear or thermal expansion and cold contraction caused by frequent opening and closing of the roller shutter door, the tension of the chain 103c decreases. The elastic force of the compression spring 202a pushes the extrusion block 202b to slide downward along the adjusting groove 201a, and drives the compression wheel 202c to continuously press the outer side of the chain 103c, so that the chain 103c is re-tensioned.

[0044] If the chain 103c is loosened too much, the sensing part 207 sends an alarm signal to prompt the operator to check and repair. By pulling the pull block 206, the operator overcomes the elastic force of the positioning spring 205c to pull the positioning rod 205b out of the positioning groove 205a, thereby unlocking the reset plate 204. The pre-tightening force of the reset spring 203 quickly pushes the reset plate 204 upward, driving the extrusion block 202b and the compression wheel 202c to rise synchronously to the initial position, completely releasing the extrusion force on the chain 103c. At this time, the chain 103c is in a relaxed state and can be easily removed from the main sprocket 103a and the auxiliary sprocket 103b. After replacing the new chain 103c, the pull block 206 is loosened, the positioning rod 205b is retracted from the positioning groove 205a under the action of the spring force, and then the reset plate 204 is pressed downward, so that the extrusion positioning rod 205b is locked to the reset plate 204 again. The elastic force of the compression spring 202a makes the compression wheel 202c press the chain 103c again, and the quick replacement process is completed.

[0045] It should be noted that the sensing part 207 can be used in combination with an alarm.

[0046] In summary, the roller shutter door chain tensioning automatic adjusting mechanical device solves the problem that the existing chain is loosened due to wear or thermal expansion and cold contraction caused by frequent use, and provides appropriate tension. When the loosening degree is too large and needs to be replaced, it is convenient for personnel to replace and operate.

[0047] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0048] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An automatic tension adjustment mechanism for the chain of a roller shutter door, characterized in that: Including, Supporting mechanism (100) comprising support plate (101), the rear side of support plate (101) is provided with motor (102) for transmission, the output end of motor (102) is drivingly connected with chain assembly (103); Wherein, the chain assembly (103) includes the main sprocket (103a) drivingly connected to the output end of the motor (102), the auxiliary sprocket (103b) is arranged on the left side of the main sprocket (103a), the rear side of the auxiliary sprocket (103b) is rotatably connected to the front side of the support plate (101), and the surfaces of the main sprocket (103a) and the auxiliary sprocket (103b) are drivingly connected with the chain (103c); Tensioning mechanism (200) comprising tensioning assembly (201) arranged on the front side of support plate (101), the tensioning assembly (201) is located at the top of chain assembly (103).

2. The mechanical device for automatic adjustment of curtain door chain tensioning according to claim 1, characterized in that: The tensioning assembly (201) includes an adjusting groove (201a) opened on the front side of the support plate (101), the surface of the adjusting groove (201a) is fixedly connected with a fixed rod (201b), and the surface of the fixed rod (201b) is provided with an extrusion part (202).

3. The automatic mechanical device for curtain chain tension adjustment according to claim 2, wherein: The extrusion part (202) includes an extrusion spring (202a) sleeved on the surface of the fixed rod (201b), the bottom of the extrusion spring (202a) is provided with an extrusion block (202b), the outer side of the extrusion block (202b) is slidably connected with the inner wall of the adjusting groove (201a), and the front side of the extrusion block (202b) is provided with a compression wheel (202c), and the surface of the compression wheel (202c) is in contact with the outer side of the chain (103c).

4. The mechanical device for automatic adjustment of curtain door chain tensioning according to claim 3, characterized in that: A reset spring (203) is sleeved on the bottom of the fixed rod (201b), the top of the reset spring (203) is fixedly connected with a reset plate (204), the top of the reset plate (204) is provided with a positioning piece (205), and the elastic force of the reset spring (203) is greater than that of the extrusion spring (202a).

5. The automatic tension adjustment mechanical device for curtain door chain as claimed in claim 4, wherein: The positioning piece (205) includes a positioning groove (205a) opened on the front side of the support plate (101), the front side of the positioning groove (205a) extends to the front side of the support plate (101), the surface of the positioning groove (205a) is slidably connected with a positioning rod (205b), one side of the positioning rod (205b) is provided with a positioning spring (205c), one side of the positioning spring (205c) is fixedly connected with the surface of the positioning groove (205a), and the top of the positioning rod (205b) is inclined.

6. The mechanical device for automatic adjustment of curtain door chain tensioning according to claim 5, characterized in that: The front side of the positioning rod (205b) is provided with a pull block (206), and the outer side of the pull block (206) is slidably connected with the inner side of the positioning groove (205a).

7. The mechanical device for automatic adjustment of curtain door chain tensioning according to claim 6, characterized in that: The front side of the adjusting groove (201a) is provided with a sensing piece (207), and the sensing piece (207) is used for sensing the looseness of the chain (103c).

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