Adjustable wrench for preventing photovoltaic purlin installation deformation

Abstract

This utility model discloses an adjustable wrench to prevent deformation during the installation of photovoltaic purlins. It includes a handle and an adjustable mechanism movably sleeved on the handle. A magnetic block is fixedly connected to the center of the handle, and the magnetic block magnetically attracts a sliding block. A toothed rail is slidably connected to the side of the handle, and the toothed rail is fixedly connected to the sliding block. The adjustable mechanism engages with the toothed rail, causing the toothed rail to drive the sliding block to move linearly and attract or separate from the magnetic block. During use, when the torque reaches a threshold, the sliding block disengages from the magnetic block, and the jaws open, thus avoiding excessive torque application and preventing deformation during photovoltaic purlin installation. Furthermore, an airflow-generating sound device will emit an audible warning to the operator when the torque is overloaded.

Description

Technical Field

[0001] This utility model relates to the field of wrench technology, specifically to an adjustable wrench for preventing deformation during the installation of photovoltaic purlins. Background Technology

[0002] With the rapid development of the photovoltaic industry and the continuous expansion of photovoltaic construction scale, the requirements for the installation accuracy and quality of photovoltaic modules are also becoming increasingly stringent. Photovoltaic systems use various types and sizes of purlins and connecting components. Traditional wrenches suffer from frequent replacements and low efficiency when installing photovoltaic purlins of different specifications.

[0003] An adjustable wrench is provided in the prior art, including a fixed tooth, a movable tooth, and a worm gear adjusting wheel. By rotating the worm gear adjusting wheel, the movable tooth is moved closer to or further away from the fixed tooth to adjust the jaw size, which can meet the installation needs of various types and sizes of photovoltaic purlins and connecting components.

[0004] However, existing adjustable wrenches lack torque control mechanisms, and the tightening degree depends entirely on the operator's subjective experience and feel. When the operator misjudges the resistance critical point or continuously applies additional torque, the preload applied to the bolt by the jaws will far exceed the design limit, causing plastic crushing deformation of the connected component (photovoltaic purlin), making it difficult to meet the installation accuracy and quality requirements of photovoltaic modules. Therefore, this technical field needs an adjustable wrench to prevent deformation during photovoltaic purlin installation. Utility Model Content

[0005] In response to the problems and needs mentioned above, this utility model discloses a novel technical solution that solves the above problems and brings other technical effects by adopting the following technical features.

[0006] An adjustable wrench for preventing deformation during photovoltaic purlin installation includes a handle and an adjustable mechanism movably sleeved on the handle. The wrench is characterized by: a magnetic block fixedly connected to the center of the handle, the magnetic block magnetically attracting a sliding block; a toothed rail slidably connected to the side of the handle, the toothed rail being fixedly connected to the sliding block; and the adjustable mechanism engaging with the toothed rail, causing the toothed rail to drive the sliding block to move linearly and attract or separate from the magnetic block.

[0007] Preferably, the adjustable mechanism includes an adjusting seat and a worm gear adjusting wheel, the adjusting seat being rotatably connected to the worm gear adjusting wheel, and the worm gear adjusting wheel being meshed with the gear rail.

[0008] Preferably, the handle is provided with a slide rail on its side, and the handle is slidably connected to the toothed rail via the slide rail.

[0009] Preferably, a piston cylinder is embedded in the tail of the lever handle, a sealing plate is slidably connected to one end of the piston cylinder, a support rod is fixedly connected between the sealing plate and the sliding block, an elastic component is sleeved on the outside of the support rod, and the outer diameter of the elastic component is larger than the inner diameter of the piston cylinder; a deceleration tube is connected to the end of the piston cylinder away from the sliding block, one end of the deceleration tube is connected to the piston cylinder and the other end is connected to the outside.

[0010] Preferably, an airflow sound-generating device is installed on the side of the retarder that is connected to the outside.

[0011] Preferably, the sliding block has a groove on the side near the magnetic block, and a magnetic component is fixedly connected inside the groove.

[0012] Preferably, a flexible protrusion is fixedly connected to the side of the sliding block that is close to the magnetic block.

[0013] Preferably, the tail of the lever handle is detachably connected to a protective sleeve.

[0014] Preferably, the protective sleeve is fitted with an anti-slip rubber sleeve.

[0015] Preferably, the head of the lever is fixedly connected with a fixed tooth, and the end of the adjustable mechanism is equipped with a movable tooth. The fixed tooth and the movable tooth are respectively provided with teeth on their opposite and close sides.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. During the process of turning the wrench, the target will exert a reaction force on the moving teeth and the fixed teeth, that is, the force that moves the moving teeth away from the fixed teeth. This force is ultimately applied to the sliding block through the adjustable mechanism. When the torque reaches the threshold, the sliding block disengages from the magnetic block, the jaws open, and the target is released, thereby avoiding excessive torque and preventing deformation of the photovoltaic purlin installation.

[0018] 2. By setting up the piston cylinder, the deceleration tube and the elastic component, the range of motion of the movable jaw can be limited. On the one hand, this avoids the sliding block from moving too much when it disengages from the magnetic block, thus limiting the opening speed of the movable jaw and preventing the jaws from opening suddenly and causing a safety accident. On the other hand, when the sliding block moves away from the magnetic block, it compresses the elastic component. The elastic force after the elastic component is compressed can push the sliding block and the sealing plate to reset.

[0019] 3. An airflow sound-generating device is installed on the side of the retarder that connects to the outside. When the torque is overloaded, the sliding block pops out, pushing the sealing plate to compress the piston cylinder. The air inside the cylinder is forced out of the retarder at high speed, causing the airflow sound-generating device to make a sound, thus warning the operator that the torque is overloaded. Attached Figure Description

[0020] Figure 1This is a first-view structural diagram of the present invention.

[0021] Figure 2 This is a structural schematic diagram of the entire utility model from a second perspective;

[0022] Figure 3 This is a cross-sectional structural diagram of the present invention with the protective sleeve removed.

[0023] Figure 4 This is a schematic diagram of the structure for removing the protective sleeve of this utility model;

[0024] Figure 5 This is a schematic diagram showing the overall disassembled structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the installation structure of the magnetic component of this utility model;

[0026] Figure 7 This utility model Figure 3 A partially enlarged view of the connection between the medium-speed retarder and the airflow sound-generating device.

[0027] In the diagram: 1-handle, 11-slide groove, 12-slide rail, 13-fixed tooth, 14-gear rail, 2-adjustable mechanism, 21-adjusting seat, 22-worm gear adjusting wheel, 31-piston cylinder, 32-sealing plate, 33-support rod, 34-elastic component, 35-retarder tube, 41-magnetic block, 42-sliding block, 421-groove, 422-magnetic component, 43-flexible protrusion, 5-movable tooth, 6-airflow sound generating device, 7-protective sleeve, 8-anti-slip rubber sleeve, 9-tooth pattern. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations.

[0030] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0031] Please see Figure 1-7 In this embodiment of the invention, an adjustable wrench for preventing deformation during photovoltaic purlin installation includes a handle 1 and an adjustable mechanism 2 movably sleeved on the handle. A magnetic block 41 is fixedly connected to the middle of the handle 1, and the magnetic block 41 magnetically attracts a sliding block 42. A toothed rail 14 is slidably connected to the side of the handle 1, and the toothed rail 14 is fixedly connected to the sliding block 42. The adjustable mechanism 2 meshes with the toothed rail 14, causing the toothed rail 14 to drive the sliding block 42 to move linearly and attract or separate from the magnetic block 41. During the process of turning the wrench, the target will exert a reaction force on the movable tooth 5 and the fixed tooth 13, i.e., the force that moves the movable tooth 5 away from the fixed tooth 13. This force is ultimately applied to the sliding block 42 through the adjustable mechanism. When the torque reaches a threshold (affected by the magnetism of the magnetic block), the sliding block disengages from the magnetic block, the jaws open, and the target is released, thereby avoiding excessive torque and preventing deformation during photovoltaic purlin installation.

[0032] Furthermore, the adjustable mechanism 2 includes an adjusting seat 21 and a worm gear adjusting wheel 22. The adjusting seat 21 and the worm gear adjusting wheel 22 are rotatably connected, and the worm gear adjusting wheel 22 is meshed with the gear rail 14. Specifically, rotating the worm gear adjusting wheel causes the adjusting seat and the movable gear to slide, thereby adjusting the jaw size and facilitating the operator to fix the target object.

[0033] Furthermore, the handle 1 is provided with a slide rail 12 on its side, and the handle 1 is slidably connected to the gear rail 14 through the slide rail 12. The slide rail is machined with high precision (such as dovetail groove, T-groove), and with the matching design of the sliding gear, it ensures smooth movement without shaking, and can maintain the stability of the mechanical structure even after long-term use.

[0034] Furthermore, such as Figure 3As shown, a piston cylinder 31 is embedded in the tail of the lever handle 1. A sealing plate 32 is slidably connected to one end of the piston cylinder 31. A support rod 33 is fixedly connected between the sealing plate 32 and the sliding block 42. An elastic component 34 is sleeved on the outside of the support rod 33. In this embodiment, the elastic component 34 can be a spring. The outer diameter of the spring is larger than the inner diameter of the piston cylinder 31. This design allows the spring to be compressed when the sliding block 42 moves away from the magnetic block 41. A deceleration tube 35 is connected to the end of the piston cylinder 31 away from the sliding block 42. One end of the deceleration tube 35 is connected to the piston cylinder 31, and the other end is connected to the outside, allowing air in the piston cylinder 31 to be discharged through the deceleration tube 35. Specifically, when the sliding block 42 disengages from the magnetic block 41, the sliding block 42 pushes the sealing plate 32 to move via the support rod 33, causing positive pressure to be generated inside the piston cylinder 31 and forcing air out of the deceleration tube 35. However, due to the diameter of the deceleration tube 35, the airflow speed is limited, thus hindering the movement of the sealing plate 32 and limiting the opening speed of the movable jaw 5, preventing a safety accident caused by the sudden opening of the jaws. At the same time, since the outer diameter of the elastic component 34 is larger than the inner diameter of the piston cylinder 31, the sliding block compresses the elastic component 34 when it moves away from the magnetic block 41. On the one hand, this further slows down the ejection speed of the sliding block 42, and on the other hand, the elastic force after the elastic component 34 is compressed pushes the sliding block and the sealing plate back to their original positions.

[0035] Furthermore, such as Figure 6 As shown, an airflow sound-generating device 6 is installed on the side of the retarder 35 that is connected to the outside. When the piston is compressed, the air inside the piston cylinder 31 is forced out of the retarder at high speed, causing the airflow sound-generating device 6 (e.g., a reed whistle, orifice whistle) to emit a sound, thereby warning the operator that the torque has been overloaded.

[0036] Furthermore, such as Figure 7 As shown, the sliding block 42 has a groove 421 on the side near the magnetic block 41, and a magnetic component 422 (in this embodiment, the magnetic component can be a magnet) is fixedly connected inside the groove 421. The groove design facilitates the replacement of the magnetic component, and the threshold of torque overload protection can be adjusted by replacing the magnetic component 422 with a different magnetic strength.

[0037] Furthermore, such as Figure 7 As shown, flexible protrusions 43 are fixedly connected to the sides of the sliding block 42 and the magnetic block 41 that are close to each other. These flexible protrusions can be made of rubber. When the sliding block 42 and the magnetic block 41 are close to each other, the oppositely arranged flexible protrusions 43 will preferentially contact each other to provide cushioning.

[0038] Furthermore, such as Figure 4As shown, a protective sleeve 7 is detachably connected to the tail of the lever handle 1. The installation of the protective sleeve prevents the operator's hand from directly contacting the lever handle 1, preventing the operator's hand from being placed in the sliding groove 11, and avoiding the sliding block 42 from moving and pinching the operator when the torque is too large, thus protecting the operator's hand. At the same time, the protective sleeve 7 is connected to the tail of the lever handle 1 by screws and nuts, which facilitates disassembly and maintenance.

[0039] Furthermore, such as Figure 4 As shown, the protective sleeve 7 is equipped with an anti-slip rubber sleeve 8, which makes it easier for the operator to grip the wrench and prevents the hand from slipping.

[0040] Furthermore, a fixed tooth 13 is fixedly connected to the head of the wrench handle 1, and a movable tooth 5 is installed at the end of the adjustable mechanism 2. The fixed tooth 13 and the movable tooth 5 are respectively provided with teeth 9 on their opposite and close sides. The teeth 9 enable the jaws to obtain greater grip when clamping the target and reduce the occurrence of "slippage".

[0041] Working principle: such as Figure 1-3 As shown, the operator rotates the worm gear adjusting wheel 22, which moves axially along the gear rail 13. This, combined with its meshing with the gear rail 14, causes the adjusting seat 21 and the movable tooth 5 to move accordingly, thereby adjusting the jaw size and locking the target object. When the manual handle 1 is pulled, the target object exerts a reaction force on the movable tooth 5 and the fixed tooth 13, causing the movable tooth 5 to move away from the fixed tooth 13. This reaction force, through the adjustable component 2 and the gear rail 14, ultimately acts on the sliding block 42. When the torque reaches a threshold (affected by the magnetism of the magnetic block 41), the sliding block 42 disengages from the magnetic block 41, pushing the sliding block 42, the adjustable mechanism 2, and the movable tooth 5 away from the fixed tooth 13, opening the jaws and releasing the target. This avoids excessive torque application and prevents deformation of the photovoltaic purlin installation. During the movement of the sliding block 42, the slider 42 pushes the sealing plate 32 to move via the support rod 33, creating positive pressure inside the piston cylinder 31 and forcing air out of the deceleration tube 35. Due to the diameter of the deceleration tube 35, the airflow speed is limited, thus hindering the movement of the sealing plate 32 and slowing down the ejection speed of the sliding block 42. Simultaneously, the deceleration tube 35 continuously discharges air, causing the airflow sound-generating structure 6 to emit a sound, thus warning the operator that the torque is overloaded. Furthermore, the elastic force generated by the compressed spring pushes the sliding block and sealing plate back to their original positions, causing the sliding block and magnetic block to re-engage, and the overload protection device is once again in the "reset" state. Finally, the worm gear adjusting wheel is moved to open the jaws.

[0042] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0043] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. An adjustable wrench for preventing deformation during photovoltaic purlin installation, comprising a handle (1) and an adjustable mechanism (2) movably sleeved on the handle, characterized in that: A magnetic block (41) is fixedly connected to the middle of the handle (1), and the magnetic block (41) magnetically attracts a sliding block (42); a toothed rail (14) is slidably connected to the side of the handle (1), and the toothed rail (14) is fixedly connected to the sliding block (42); the adjustable mechanism (2) meshes with the toothed rail (14), so that the toothed rail (14) drives the sliding block (42) to move linearly and attract or separate from the magnetic block (41).

2. The adjustable wrench for preventing deformation during photovoltaic purlin installation according to claim 1, characterized in that, The adjustable mechanism (2) includes an adjusting seat (21) and a worm gear adjusting wheel (22). The adjusting seat (21) is rotatably connected to the worm gear adjusting wheel (22), and the worm gear adjusting wheel (22) is meshed with the gear rail (14).

3. The adjustable wrench for preventing deformation during photovoltaic purlin installation according to claim 1, characterized in that, The handle (1) is provided with a slide rail (12) on its side, and the handle (1) is slidably connected to the toothed rail (14) through the slide rail (12).

4. The adjustable wrench for preventing deformation during photovoltaic purlin installation according to claim 1, characterized in that, A piston cylinder (31) is embedded in the tail of the lever handle (1). A sealing plate (32) is slidably connected to one end of the piston cylinder (31). A support rod (33) is fixedly connected between the sealing plate (32) and the sliding block (42). An elastic component (34) is sleeved on the outside of the support rod (33). The outer diameter of the elastic component (34) is larger than the inner diameter of the piston cylinder (31). A deceleration tube (35) is connected to one end of the piston cylinder (31) away from the sliding block (42). One end of the deceleration tube (35) is connected to the piston cylinder (31), and the other end is connected to the outside.

5. The adjustable wrench for preventing deformation during photovoltaic purlin installation according to claim 4, characterized in that, An airflow sound-generating device (6) is installed on the side of the retarder (35) that is connected to the outside.

6. The adjustable wrench for preventing deformation during photovoltaic purlin installation according to claim 1, characterized in that, The sliding block (42) has a groove (421) on the side near the magnetic block (41), and a magnetic component (422) is fixedly connected inside the groove (421).

7. The adjustable wrench for preventing deformation during photovoltaic purlin installation according to claim 1, characterized in that, Flexible protrusions (43) are fixedly connected to the side of the sliding block (42) that is close to the magnetic block (41).

8. The adjustable wrench for preventing deformation during photovoltaic purlin installation according to claim 1, characterized in that, The tail of the lever handle (1) is detachably connected to a protective sleeve (7).

9. The adjustable wrench for preventing deformation of photovoltaic purlins during installation according to claim 8, characterized in that, The protective sleeve (7) is fitted with an anti-slip rubber sleeve (8).

10. The adjustable wrench for preventing deformation during photovoltaic purlin installation according to claim 1, characterized in that, The head of the lever (1) is fixedly connected with a fixed tooth (13), and the end of the adjustable mechanism (2) is equipped with a movable tooth (5). The fixed tooth (13) and the movable tooth (5) are respectively arranged opposite to each other and are close to each other with teeth (9).

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