Clamp

Abstract

The utility model provides a clamp which comprises a connecting column, two fixing rods and two swing arms which are sequentially connected from top to bottom, and the two fixing rods and the connecting column form an inverted Y-shaped structure. A lifting mechanism is fixedly arranged at the top end of the connecting column, and the free end of a piston rod of the lifting mechanism extends downwards to the position between the two fixing rods. The two fixing rods and the two swing arms are arranged in a one-to-one correspondence mode, the front end of each swing arm is a swing end, the rear end of each swing arm is hinged to the corresponding fixing rod through a first hinge shaft, and the rear end of each swing arm extends towards the side of the other swing arm to form an extension arm; the extension arm of each swing arm is hinged to the free end of the piston rod through a connecting rod. The device is simple in structure, flexible to use and favorable for improving the working efficiency.

Description

Technical Field

[0001] The utility model relates to the field of mechanical equipment, in particular to a clamp. Background Art

[0002] In the field of bamboo processing, a clamp is often needed to hold the bamboo tube or bamboo piece, for example: holding the bamboo tube or bamboo piece by a clamp for feeding, or holding and clamping the bamboo tube or bamboo piece by a clamp for processing operations, etc.

[0003] The Chinese patent with the authorization announcement number CN219383949U discloses a bamboo sheet holding and feeding machine, which clamps the bamboo sheets through a fixed frame and a holding claw that can swing up and down at the bottom of the fixed frame. However, the clamp structure of the patent requires the holding claw to swing at a large angle, which is not flexible enough and has low production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a clamp.

[0005] The technical solution to achieve the purpose of the utility model is: a clamp, comprising a connecting column, two fixed rods and two swing arms which are sequentially connected from top to bottom, and the two fixed rods and the connecting column together form an inverted Y-shaped structure; a lifting mechanism is provided at the top of the connecting column, and the piston rod of the lifting mechanism is arranged downward, and the free end of the piston rod extends downward to between the two fixed rods; the two fixed rods and the two swing arms are arranged in a one-to-one correspondence, the front end of the swing arm is the swing end, and the rear end is hinged to the corresponding fixed rod through a first hinge shaft, and the rear end of each swing arm extends toward the side of the other swing arm to form an extension arm; the extension arm of each swing arm is hinged to the free end of the piston rod through a connecting rod.

[0006] The utility model drives the piston rod to rise through the lifting mechanism, and then drives the two swing arms that originally droop naturally to swing toward the other swing arm and upward with the first hinge axis corresponding to each of them as the swing center through the connecting rod, so as to clamp and fix the material between the two swing arms. The clamp of the utility model has a simple structure, is flexible to use, and is conducive to improving work efficiency.

[0007] Furthermore, a connecting rod is fixedly connected between the bottom ends of the two fixed rods. When working, the connecting rod can be placed on the material in the material placement slot to limit the top position, and the connecting rod and the two swing arms can hold the material (such as bundles of bamboo pieces or bamboo tubes, etc.) tightly, so the clamping effect is better and the material will not shake.

[0008] Furthermore, the sum of the arm lengths of the two swing arms from their first hinge axis positions to their front ends is ≥ the straight-line distance between the first hinge axis positions of the two swing arms, so that the front ends of the two swing arms can overlap each other during the swinging process, thereby avoiding material leakage when clamping the bundled materials.

[0009] Furthermore, a fixing rod installation groove is formed at the bottom end of the connecting column, and the top ends of the two fixing rods extend into the fixing rod installation groove and are respectively fixed on two opposite groove walls of the fixing rod installation groove.

[0010] Furthermore, the two swing arms are arranged on both sides of the connecting rod, which is reasonably designed and provides the most stable hold.

[0011] Furthermore, the free end of the piston rod is coaxially connected to a connecting shaft, and a second hinge shaft is horizontally penetrated through the lower end of the connecting shaft. The two connecting rods are jointly installed on the second hinge shaft. At this time, the two connecting rods share one hinge shaft, which is the most reasonable design.

[0012] Furthermore, the fixing rod is an arc-shaped rod or an inclined rod.

[0013] Furthermore, each of the swing arms forms an angle of 90° with its corresponding extension arm.

[0014] Furthermore, the lifting mechanism is a lifting cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural diagram of the clamp of Example 1;

[0016] Figure 2 It is a front view structural diagram of the clamp of Example 2. DETAILED DESCRIPTION

[0017] The preferred embodiment of the clamp of the utility model is described in detail below in conjunction with the accompanying drawings: Example 1

[0018] like Figure 1As shown, a clamp comprises a connecting column 10, two fixed rods 20 and two swing arms 30 which are sequentially connected from top to bottom, and the two fixed rods 20 and the connecting column 10 together form an inverted Y-shaped structure; a lifting mechanism 40 is provided at the top of the connecting column 10, and a piston rod 41 of the lifting mechanism 40 is arranged downward, and the free end of the piston rod 41 extends downward to between the two fixed rods 20; the two fixed rods 20 and the two swing arms 30 are arranged in a one-to-one correspondence; the front end of the swing arm 30 is a swing end, and the rear end is hinged to the corresponding fixed rod 20 through a first hinge shaft 100, and the rear end of each swing arm 30 extends toward the side of the other swing arm 30 to form an extension arm 31; the extension arm 31 of each swing arm 30 is hinged to the free end of the piston rod 41 through a connecting rod 50 respectively; wherein the fixed rod 20 is an arc rod.

[0019] The connection structures between the two swing arms 30 and the corresponding extension arms 31 and the connecting rod 50 are the same. Example 2

[0020] The clamp of Example 2 is different from that of Example 1 in that: Figure 2 As shown, the fixing rod 20 is an inclined rod.

[0021] During operation, the lifting mechanism 40 drives the piston rod 41 to rise, and the piston rod 41 then drives the two swing arms 30 that were originally drooping naturally through the connecting rod 50 to swing toward the other swing arm 30 and upward with their respective corresponding first hinge shafts 100 as the swing center, so that the two swing arms 30 (or the extension lines of the swing arms 30) form an angle, thereby forming a material placement space surrounded by the two swing arms 30 above the two swing arms 30, thereby clamping the material between the two swing arms 30.

[0022] The clamps of Example 1 and Example 2 have simple structures and are flexible to use, thereby helping to improve work efficiency.

[0023] Furthermore, a connecting rod 60 is fixedly connected between the bottom ends of the two fixed rods 20. During operation, the two swing arms 30 swing until the two swing arms 30 (or the extension lines of the swing arms) form an angle, and the two swing arms 30 and the connecting rod 60 together form a material clamping space. The connecting rod 60 can limit the top position of the material in the material clamping space. The connecting rod 60 and the two swing arms 30 can hold the material tightly together, so the clamping effect of the material is better and the material will not shake. Of course, the clamp of the utility model can also be provided without the connecting rod 60. In this case, the material will be clamped in the material clamping space surrounded by the two swing arms 30 and the two extension arms 31.

[0024] Further, such as Figure 1 , Figure 2 As shown, the sum of the arm lengths of the two swing arms 30 from the first hinge shaft 100 to the front end thereof (i.e., A+B) is ≥ the straight-line distance C between the first hinge shafts 100 of the two swing arms 30, so that the front ends of the two swing arms 30 can overlap each other during the swinging process, thereby avoiding leakage when clamping bundled materials (e.g., bundled bamboo strips). Of course, the sum of the arm lengths of the two swing arms 30 from the first hinge shaft 100 to the front end thereof (i.e., A+B) of the utility model can also be less than the straight-line distance C between the first hinge shafts 100 of the two swing arms 30.

[0025] Further, such as Figure 1 As shown, a fixing rod installation groove 11 is provided at the bottom end of the connecting column 10, and the top ends of the two fixing rods 20 extend into the fixing rod installation groove 11 and are respectively fixed to two opposite groove walls of the fixing rod installation groove 11. Of course, the fixing rod 20 can also be directly fixed to the outer wall of the connecting column 10, in which case, the fixing rod installation groove 11 may not be provided at the bottom end of the connecting column 10.

[0026] The two swing arms 30 may be arranged on the same side or both sides of the connecting rod 60. Preferably, Figure 1 , Figure 2 As shown, the two swing arms 30 are disposed on both sides of the connecting rod 60, and the design is reasonable, and the holding is most stable.

[0027] Further, such as Figure 1 , Figure 2 As shown, the free end of the piston rod 41 is coaxially connected to a connecting shaft, and a second hinge shaft 200 is horizontally penetrated on the lower end of the connecting shaft. The two connecting rods 50 are jointly installed on the second hinge shaft 200. At this time, the two connecting rods 50 share one hinge shaft, which is the most reasonable design.

[0028] Further, such as Figure 1 , Figure 2 As shown, each swing arm 30 forms an angle of 90° with its corresponding extension arm 31. Of course, the swing arm 30 and its corresponding extension arm 31 can be, but are not limited to, vertically arranged, and the angle between the two can be adjusted as needed.

[0029] Furthermore, the lifting mechanism 40 is a lifting cylinder.

[0030] For ordinary technicians in the technical field to which the utility model belongs, the utility model can make several simple deductions or substitutions without departing from the concept of the utility model, which should be regarded as falling within the protection scope of the utility model.

Claims

1. A clamp, characterized in that: It includes a connecting column, two fixed rods and two swing arms which are connected in sequence from top to bottom, and the two fixed rods and the connecting column together form an inverted Y-shaped structure; a lifting mechanism is provided at the top of the connecting column, and the piston rod of the lifting mechanism is arranged downward, and the free end of the piston rod extends downward to between the two fixed rods; the two fixed rods and the two swing arms are arranged in a one-to-one correspondence, the front end of each swing arm is a swing end, and the rear end is hinged to the corresponding fixed rod through a first hinge shaft, and the rear end of each swing arm extends toward the other swing arm to form an extension arm; the extension arms of each swing arm are hinged to the free end of the piston rod through a connecting rod.

2. The clamp according to claim 1, characterized in that: A connecting rod is fixedly connected between the bottom ends of the two fixing rods.

3. The clamp according to claim 2, characterized in that: The two swing arms are respectively arranged on both sides of the connecting rod.

4. The clamp according to claim 1, characterized in that: The sum of the arm lengths of the two swing arms from their first hinge axis positions to their front ends is ≥ the straight-line distance between the first hinge axis positions of the two swing arms.

5. The clamp according to claim 1, characterized in that: A fixing rod installation groove is formed at the bottom end of the connecting column, and the top ends of the two fixing rods extend into the fixing rod installation groove and are respectively fixed on two opposite groove walls of the fixing rod installation groove.

6. The clamp according to claim 1, characterized in that: The fixing rod is an arc rod or an inclined rod.

7. The clamp according to claim 1, characterized in that: The free end of the piston rod is coaxially connected to a connecting shaft, a second hinge shaft is horizontally penetrated through the lower end of the connecting shaft, and the two connecting rods are commonly installed on the second hinge shaft.

8. The clamp according to claim 1, characterized in that: The lifting mechanism is a lifting cylinder.

9. The clamp according to claim 1, characterized in that: Each swing arm forms an angle of 90° with its corresponding extension arm.

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