Clamp capable of being rapidly adjusted

Abstract

The invention relates to the technical field of clamps, in particular to a clamp capable of being quickly adjusted, which comprises a rectangular pipe sleeve, an upper clamp body, a lower clamp body, a clutch mechanism, a clamping force application assembly and an adjusting assembly. An upper plier body handle of the upper plier body is slidably mounted in the rectangular pipe sleeve, and the top end of the upper plier body handle is connected with an upper plier opening; the front end of a lower plier body handle of the lower plier body is connected with a lower plier opening through an inserting rod, and the lower plier opening is hinged to a first hinge seat through a protruding block. The clutch mechanism controls the sliding limitation of the upper clamp body handle and the rectangular pipe sleeve; the clamping force application assembly is installed between the rectangular pipe sleeve and the lower clamp body handle, and the adjusting assembly is in transmission connection with the clamping force application assembly so as to adjust the clamping force. The clamping range can be rapidly adjusted, the clutch operation is simple, the clamping force is accurate and controllable, the labor intensity is reduced, the workpiece is prevented from being damaged, and the application scene is wide.

Description

Technical Field

[0001] This invention relates to the field of clamp technology, specifically a clamp that can be quickly adjusted. Background Technology

[0002] A clamp is a mechanical tool used to hold and fix workpieces or equipment. It is widely used in many fields such as machining, assembly and maintenance, and construction. Its core function is to achieve stable fixation of the target object through the relative clamping action of the jaws, so as to carry out subsequent operations.

[0003] There are many types of clamps available in the current technology, the most common being ordinary manual clamps, hydraulic clamps, and pneumatic clamps. Among them, ordinary manual clamps have a simple structure, controlling the opening and closing of the jaws and the clamping force by manually adjusting a screw or lever. However, adjusting the jaw opening range of these clamps is cumbersome, often requiring gradual rotation of the screw to change the clamping range, making rapid adjustment impossible and resulting in low efficiency when adapting to workpieces of different sizes. Hydraulic clamps and pneumatic clamps, while providing greater clamping force, have complex structures, higher costs, and insufficient flexibility in adjusting the clamping range. They also rely on an external power source, making them unusable in scenarios without power supply. Summary of the Invention

[0004] The purpose of this invention is to provide a clamp that can be quickly adjusted to solve the problems mentioned in the background art.

[0005] The objective of this invention can be achieved through the following technical solutions: A quick-adjustable clamp, comprising: A rectangular tube sleeve, wherein a hinge seat is provided at one end of the rectangular tube sleeve; The upper clamp body includes an upper clamp handle that is slidably installed in a rectangular tube sleeve. The upper clamp handle has a toothed part located at the middle of its side. The upper clamp handle is fixedly installed with an upper jaw. An clearance groove is provided on the side of the upper jaw. The lower clamp body includes a lower clamp handle. The front end of the lower clamp handle is fixedly connected to an insert rod that slides through the upper clamp jaw through the relief groove. The front end of the insert rod is fixedly installed with a lower clamp jaw that cooperates with the upper clamp jaw. A protrusion is provided on the back side of the lower clamp jaw. The protrusion is hinged to a rectangular tube sleeve through a hinge seat. A clutch mechanism is provided on the rectangular tube sleeve and is used to cooperate with the clearance groove to limit the sliding between the upper clamp handle and the rectangular tube sleeve; The clamping force application component is fixedly installed between the rectangular tube sleeve and the lower clamp handle; An adjustment component located on the lower clamp handle is connected to the clamping force application component and is used to control the clamping force application component to adjust the clamping force of the clamp.

[0006] Furthermore, the side of the rectangular tube sleeve has a relief groove two that communicates with the inside of the rectangular tube sleeve at a position near the hinge seat one. The relief groove two is used to avoid the upper jaw.

[0007] Furthermore, the clutch mechanism includes a guide rod and a through groove formed on the side of the rectangular tube sleeve, in which a toothed block that engages with the meshing teeth is slidably installed; The guide rods are provided in four rectangular arrangement and slide through the rectangular tube sleeve. The ends of the four guide rods away from the through groove are fixedly connected to a pressing plate. The four corners of the pressing plate are fixedly connected to the rectangular tube sleeve with springs sleeved around the corresponding guide rods. A connecting block is fixedly connected between the end of the guide rod near the through groove and the toothed block; In the initial state, the supporting force of the spring causes the tooth surface of the tooth block to engage with the meshing teeth on the upper clamp handle.

[0008] Furthermore, the clamping force application component includes a hollow column one, and a connection port is fixedly installed through the periphery of the hollow column one near one end. A piston one is slidably installed in the hollow column one, and a push rod is fixedly installed at the end of the piston one away from the connection port. The end of the push rod away from the piston one is hinged to the rectangular tube sleeve through a hinge seat two. The hollow column one end near the connection port is hinged to the lower clamp handle via the hinge seat three.

[0009] Furthermore, the adjustment assembly includes a hollow column two fixedly installed at the tail end of the lower clamp handle, a piston two slidably installed in the hollow column two, a screw threadedly installed at one end of the hollow column two away from the lower clamp handle, one end of the screw located in the hollow column two being rotatably connected to the piston two, and a knob fixedly installed at the other end of the screw. A flexible oil guide tube is fixedly connected to one end of the knob-operated lower clamp handle. The end of the flexible oil guide tube away from the hollow column two is fixedly connected to the hollow column one through the connection port.

[0010] Furthermore, the lower clamp handle has a channel for accommodating the flexible oil guide tube. The end of the flexible oil guide tube away from the piston passes through the end of the lower clamp handle and enters the channel. Then, it passes through the side wall of the channel to the outside of the channel and is fixedly connected to the connection port.

[0011] The beneficial effects of this invention are: 1. This invention, through the cooperation of the clutch mechanism and the upper clamp handle, can quickly achieve the engagement and disengagement of the upper clamp handle and the rectangular tube sleeve. By pushing the upper clamp handle to slide, the clamping range of the upper and lower jaws can be greatly adjusted. Compared with the existing manual clamps that adjust step by step, the adjustment efficiency is significantly improved, and it is more flexible in adapting to workpieces of different sizes, solving the problem of cumbersome adjustment of the clamping range of existing clamps.

[0012] 2. The clutch mechanism of the present invention uses four rectangular guide rods in conjunction with springs to drive the tooth blocks to mesh with the teeth. In the initial state, the upper clamp handle can be stably fixed. Pressing the pressing plate can quickly separate the clamps. After releasing the clamps, the clamps automatically reset. The operation steps are few and the response is fast, which overcomes the defects of some existing clamps that have complex clutch structures and are not securely fixed.

[0013] 3. The present invention uses an adjustment structure consisting of a knob, a screw, and a hydraulic transmission component. It eliminates the need for continuous manual force application. Simply turning the knob allows for precise adjustment of the hydraulic oil volume, thereby controlling the clamping force of the upper and lower jaws. This not only reduces labor intensity but also allows for flexible adjustment of the force according to the workpiece requirements, preventing the workpiece from falling off due to excessive looseness or damaging the workpiece due to excessive tightness. This solves the problem of poor clamping force adjustment accuracy in existing clamps. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 Enlarged view of section B; Figure 3 yes Figure 1 Enlarged view of section A; Figure 4 This is a three-dimensional schematic diagram of the present invention; Figure 5 yes Figure 4 Enlarged view of section C; Figure 6 yes Figure 4 A three-dimensional diagram from another angle; Figure 7 yes Figure 6 Enlarged view of section D; Figure 8 This is a three-dimensional schematic diagram of the location of the through groove in this invention; The reference numerals in the attached figures are as follows: 1-Rectangular sleeve, 2-Upper jaw handle, 3-Upper jaw, 4-Lower jaw handle, 5-Insertion rod, 6-Hinge seat one, 7-Protrusion, 8-Lower jaw, 9-Channel, 10-Clutch mechanism, 11-Flexible oil guide tube, 12-Hinge seat two, 13-Hollow column one, 14-Push rod, 15-Piston one, 16-Hinge seat three, 17-Connecting port, 18-Hollow column two, 19-Piston two, 20-Screw, 21-Knob, 22-Allowing groove one, 23-Spring, 24-Pressing plate, 25-Guide rod, 26-Tooth block, 27-Through groove, 28-Connecting block, 29-Gear, 30-Allowing groove two. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Example 1: Please see Figure 1 and Figure 4 In this embodiment of the invention, a clamp that can be quickly adjusted includes: A rectangular tube sleeve 1, with a hinge seat 6 provided at one end of the rectangular tube sleeve 1; The upper clamp body includes an upper clamp handle 2 that is slidably installed in a rectangular tube sleeve 1. A tooth 29 is provided at the middle section of the side of the upper clamp handle 2. An upper clamp jaw 3 is fixedly installed on the upper clamp handle 2. An avoidance groove 22 is provided on the side of the upper clamp jaw 3. The lower clamp body includes a lower clamp handle 4. The front end of the lower clamp handle 4 is fixedly connected to an insert rod 5 that slides through the upper clamp jaw 3 via a relief groove 22. The front end of the insert rod 5 is fixedly installed with a lower clamp jaw 8 that works in conjunction with the upper clamp jaw 3. A protrusion 7 is provided on the back side of the lower clamp jaw 8. The protrusion 7 is hinged to the rectangular tube sleeve 1 via a hinge seat 6. The clutch mechanism 10 is provided on the rectangular tube sleeve 1 and is used to cooperate with the clearance groove 22 to limit the sliding between the upper clamp handle 2 and the rectangular tube sleeve 1; The clamping force application component is fixedly installed between the rectangular tube sleeve 1 and the lower clamp handle 4; An adjustment component located on the lower clamp handle 4 is connected to the clamping force application component and is used to control the clamping force application component to adjust the clamping force of the clamp.

[0017] The side of the rectangular tube sleeve 1 is provided with a relief groove 30 that is in communication with the inside of the rectangular tube sleeve 1 near the hinge seat 6. The relief groove 30 is used to avoid the upper jaw 3.

[0018] When the rectangular sleeve and the upper clamp handle are held in a fixed position by the clutch mechanism, the initial clamping size of the lower and upper jaws can be directly adjusted by changing the included angle between the lower and upper clamp handles. This allows for initial adaptation to workpieces of different sizes, solving the problem of inconvenient initial clamping range adjustment in some existing clamps. When it is necessary to further expand or shrink the clamping range to accommodate more workpiece specifications, the clutch mechanism quickly releases the sliding restriction between the upper clamp handle and the rectangular sleeve, pushing the upper clamp handle to slide within the rectangular sleeve. This significantly changes the clamping range of the lower and upper jaws. Compared to the gradual adjustment required by existing manual clamps, this achieves rapid switching of the clamping range, significantly improving work efficiency. The design of the second clearance groove prevents interference between the upper jaw and the rectangular sleeve during movement, ensuring smooth adjustment and further optimizing the user experience.

[0019] Example 2: Please see Figure 1 and Figures 4-8 Based on embodiment 1, the clutch mechanism 10 includes a guide rod 25 and a through groove 27 opened on the side of the rectangular tube sleeve 1. A tooth block 26 that cooperates with the meshing tooth 29 is slidably installed in the through groove 27. Four guide rods 25 are provided. The four guide rods 25 are arranged in a rectangle and slide through the rectangular tube sleeve 1. The ends of the four guide rods 25 away from the through groove 27 are fixedly connected to a pressing plate 24. The four corners of the pressing plate 24 are fixedly connected to the rectangular tube sleeve 1 with springs 23 sleeved around the corresponding guide rods 25. A connecting block 28 is fixedly connected between the end of the guide rod 25 near the through groove 27 and the toothed block 26; In the initial state, the supporting force of the spring 23 causes the tooth surface of the tooth block 26 to engage with the meshing tooth 29 on the upper clamp handle 2.

[0020] In the initial state, the supporting force of the spring drives the toothed block to tightly engage with the teeth on the upper clamp handle through the guide rod and connecting block, achieving stable fixation between the upper clamp handle and the rectangular sleeve, preventing loosening during clamping, and solving the problem of unreliable fixation in some existing clamping clutch structures. When it is necessary to adjust the clamping range, simply press the pressing plate. The pressing plate drives the four guide rods to slide synchronously into the rectangular sleeve. The guide rods pull the toothed block away from the upper clamp handle through the connecting block, causing the tooth surface of the toothed block to quickly separate from the teeth. At this time, the spring is in a compressed state, allowing the upper clamp handle to slide freely to adjust its position. After adjustment, release the pressing plate. The elastic restoring force of the spring drives the guide rod, connecting block, and toothed block to reset, and the toothed block re-engages with the teeth, achieving stable fixation again. The entire clutch process is simple to operate and responds quickly. Compared with the existing complex clutch control structure, it significantly shortens the clamping range adjustment time and further improves the ease of use of the clamp.

[0021] Example 3: Please see Figures 1-3 Based on embodiment 1, the clamping force application component includes a hollow column 13. A connection port 17 is fixedly installed through the periphery of the hollow column 13 near one end. A piston 15 is slidably installed in the hollow column 13. A push rod 14 is fixedly installed at the end of the piston 15 away from the connection port 17. The end of the push rod 14 away from the piston 15 is hinged to the rectangular tube sleeve 1 through a hinge seat 12. The end of the hollow column 13 near the connection port 17 is hinged to the lower clamp handle 4 via the hinge seat 3 16.

[0022] The adjustment assembly includes a hollow column 18 fixedly installed at the tail end of the lower clamp handle 4, a piston 19 slidably installed in the hollow column 18, a screw 20 threadedly installed at one end of the hollow column 18 away from the lower clamp handle 4, one end of the screw 20 located in the hollow column 18 being rotatably connected to the piston 19, and a knob 21 fixedly installed at the other end of the screw 20; The knob 21 is turned into the lower clamp handle 4 and a flexible oil guide tube 11 is fixedly connected to one end. The end of the flexible oil guide tube 11 away from the hollow column 18 is fixedly connected to the hollow column 13 through the connection port 17.

[0023] After the upper and lower jaws of the clamp initially grip the workpiece, no continuous manual force is required. Rotating the knob drives the screw to turn. Since the screw is threadedly connected to the hollow column, its rotation is converted into linear movement of the piston within the hollow column. This movement of the piston injects or draws hydraulic oil into or out of the hollow column through a flexible oil guide tube. Changes in the oil volume within the hollow column cause the piston to slide adaptively, thereby extending or retracting the push rod and altering the total length of the push rod and the hollow column. This change in length directly alters the angle between the rectangular sleeve and the lower clamp handle, achieving precise adjustment of the clamping force. This structure replaces the traditional manual clamping method, reducing operator workload and solving the problem of precise clamping force control in existing manual clamps. The stability of the hydraulic transmission allows for flexible adjustment of the clamping force according to the workpiece material and requirements, preventing excessively loose or tight clamping, effectively protecting the workpiece and ensuring clamping stability.

[0024] Example 4: Please see Figures 1-3 Based on embodiment 3, a channel 9 for accommodating the flexible oil guide tube 11 is provided in the lower clamp handle 4. The end of the flexible oil guide tube 11 away from the piston 19 passes through the end of the lower clamp handle 4 and enters the channel 9. Then, it passes through the side wall of the channel 9 to the outside of the channel 9 and is fixedly connected to the connection port 17.

[0025] The flexible oil guide tube is arranged through a channel inside the lower clamp handle. This channel effectively protects the flexible oil guide tube, preventing damage from external impacts and friction during clamp use, thus extending its service life and solving the problem of exposed and easily damaged hydraulic lines in some existing clamps. At the same time, the channel design allows the flexible oil guide tube to fit snugly against the lower clamp handle, preventing it from tangling or interfering with the movement of other components during operation. This ensures the smooth transmission of the clamping force application and adjustment components, further improving the overall stability and reliability of the clamp's operation and ensuring that the accuracy of clamping force adjustment remains unaffected.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A clamp that can be quickly adjusted, characterized in that, include: A rectangular tube sleeve (1) is provided with a hinge seat (6) at one end of the rectangular tube sleeve (1); The upper clamp body includes an upper clamp handle (2) that is slidably installed in a rectangular tube sleeve (1). The upper clamp handle (2) has a tooth (29) at the middle of its side. The upper clamp handle (2) has an upper jaw (3) that is fixedly installed. The upper jaw (3) has a clearance groove (22) on its side. The lower clamp body includes a lower clamp handle (4). The front end of the lower clamp handle (4) is fixedly connected to a rod (5) that slides through the upper clamp jaw (3) via the relief groove (22). The front end of the rod (5) is fixedly installed with a lower clamp jaw (8) that works with the upper clamp jaw (3). A protrusion (7) is provided on the back side of the lower clamp jaw (8). The protrusion (7) is hinged to the rectangular tube sleeve (1) via a hinge seat (6). The clutch mechanism (10) is provided on the rectangular tube sleeve (1) and is used to cooperate with the relief groove (22) to limit the sliding between the upper clamp handle (2) and the rectangular tube sleeve (1); The clamping force application component is fixedly installed between the rectangular tube sleeve (1) and the lower clamp handle (4); An adjustment component located on the lower clamp handle (4) is connected to the clamping force application component and is used to control the clamping force application component to adjust the clamping force of the clamp.

2. The clamp that can be quickly adjusted according to claim 1, characterized in that, The side of the rectangular tube sleeve (1) is provided with a relief groove (30) that is in communication with the inside of the rectangular tube sleeve (1) near the hinge seat (6). The relief groove (30) is used to avoid the upper jaw (3).

3. The clamp that can be quickly adjusted according to claim 1, characterized in that, The clutch mechanism (10) includes a guide rod (25) and a through groove (27) opened on the side of the rectangular tube sleeve (1), in which a tooth block (26) is slidably installed to cooperate with the meshing teeth (29). The guide rod (25) is provided in four parts. The four guide rods (25) are arranged in a rectangular shape and slide through the rectangular tube sleeve (1). The ends of the four guide rods (25) away from the through groove (27) are fixedly connected to a pressing plate (24). The four corners of the pressing plate (24) are fixedly connected to the rectangular tube sleeve (1) with springs (23) sleeved on the periphery of the corresponding guide rod (25). A connecting block (28) is fixedly connected between the end of the guide rod (25) near the through groove (27) and the toothed block (26); In the initial state, the supporting force of the spring (23) causes the tooth surface of the tooth block (26) to mesh with the meshing tooth (29) on the upper clamp handle (2).

4. The clamp that can be quickly adjusted according to claim 1, characterized in that, The clamping force application component includes a hollow column (13), and a connecting port (17) is fixedly installed through the periphery of the hollow column (13) near one end. A piston (15) is slidably installed in the hollow column (13). A push rod (14) is fixedly installed at the end of the piston (15) away from the connecting port (17). The end of the push rod (14) away from the piston (15) is hinged to the rectangular tube sleeve (1) through a hinge seat (12). The hollow column one (13) is hinged to the lower clamp handle (4) at one end near the connection port (17) via the hinge seat three (16).

5. A clamp that can be quickly adjusted according to claim 4, characterized in that, The adjustment assembly includes a hollow column 2 (18) fixedly installed at the tail end of the lower clamp handle (4), a piston 2 (19) slidably installed in the hollow column 2 (18), a screw (20) threaded through one end of the hollow column 2 (18) away from the lower clamp handle (4), one end of the screw (20) located in the hollow column 2 (18) is rotatably connected to the piston 2 (19), and a knob (21) is fixedly installed at the other end of the screw (20). The knob (21) is fixedly connected to one end of the lower clamp handle (4) with a flexible oil guide tube (11). The end of the flexible oil guide tube (11) away from the hollow column two (18) is fixedly connected to the hollow column one (13) through the connection port (17).

6. A clamp that can be quickly adjusted according to claim 5, characterized in that, The lower clamp handle (4) has a channel (9) for accommodating the flexible oil guide tube (11). The end of the flexible oil guide tube (11) away from the piston (19) passes through the end of the lower clamp handle (4) and enters the channel (9). Then, it is fixedly connected between the side wall of the channel (9) and the outside of the channel (9) and the connection port (17).

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