Plate roller hoisting clamp

Abstract

The utility model provides a plate roller hoisting clamp, which relates to the technical field of hoisting equipment and comprises a clamping mechanism, the clamping mechanism comprises a stabilizing frame and two second connecting rods, a lightening hole is formed in the middle of the stabilizing frame, a group of tension springs is mounted above the stabilizing frame in a manner of being matched with bolts, and the second connecting rods are connected with the stabilizing frame. A positioning frame is installed above the tension spring and matched with a bolt, and a pressing block is installed on the inner side of the matched bolt. The clamp can meet the lifting requirements of printing rollers of various sizes through the scissor fork mechanism and the adjustable clamping blocks, the universality is good, the whole clamp operation process is simple and easy to understand, the adjusting bolts, the positioning bolts and the locking blocks are convenient to operate, the skill threshold of operators is lowered, all the components are reasonable in structural design, the installation, adjustment and disassembly processes are convenient, and the practicability is high. And the working convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of hoisting equipment technology, and in particular to a printing roller hoisting clamp. Background Technology

[0002] In the printing and packaging industries, printing rollers are crucial production components, requiring frequent handling, installation, and replacement. Printing rollers are typically large and heavy, making hoisting them a challenging and risky task. In actual production, traditional printing roller hoisting methods have revealed several problems, including:

[0003] Most existing lifting fixtures are designed for printing rollers of specific sizes and shapes, lacking versatility. When companies need to lift printing rollers of different specifications, they often need to equip themselves with a variety of special fixtures. This not only increases the company's equipment procurement costs, but also occupies a lot of storage space. Frequent fixture replacements also consume a lot of time and manpower, seriously affecting production efficiency.

[0004] When some lifting clamps hold the printing rollers, the rollers are subjected to significant impact forces due to vibrations during lifting, lowering, and transportation. This can cause the rollers to wobble or slip, which not only damages the rollers themselves and affects product quality, but also poses a serious threat to the safety of operators and surrounding equipment. Utility Model Content

[0005] This utility model discloses a printing roller hoisting clamp. The scissor mechanism formed by the first link and the second link can move freely to expand the distance between the two clamping blocks. The clamping blocks are moved to the clamping position of the printing roller. The operator pulls the locking block to one side with the help of the nut. At this time, the support spring on the outside of the positioning bolt pushes the positioning rod to quickly return to its original position, which drives the clamping block to tightly clamp the printing roller, thereby realizing the rapid clamping of the printing roller.

[0006] In a first aspect, this disclosure provides a printing roller lifting fixture, specifically comprising: a clamping mechanism, the clamping mechanism including a stabilizing frame and a second connecting rod, there being two second connecting rods; a weight-reducing hole is provided in the middle position of the stabilizing frame; a set of tension springs is installed on the upper position of the stabilizing frame with bolts; a positioning frame is installed on the upper position of the tension springs with bolts; a clamping block is installed on the inner side of the bolts; a slot with a V-shaped structure is provided in the middle position of the bottom of the clamping block; a sleeve is installed on the inner side of the second connecting rods; a set of limiting structures is installed in the middle position of the clamping mechanism; a set of hinged positioning protective blocks are respectively installed on the outer positions of the stabilizing frame and the positioning frame; the protective blocks are installed at the mounting holes; and a pin is installed at the hinge position of the protective blocks.

[0007] Furthermore, a horizontal support rod is provided on one side of the stabilizing frame. The support rod has a cylindrical structure. There are two first connecting rods. A rotating hole is opened on each side of the first connecting rod. The first connecting rod is installed on the outer side of the support rod in conjunction with the rotating hole.

[0008] Furthermore, a second connecting rod is installed on one side of the first connecting rod and hinged with a mating pin. A clamping block is provided at the bottom of the second connecting rod, and a clamping groove is opened on the inner side of the clamping block. The clamping groove has a V-shaped structure.

[0009] Furthermore, a rotating hole is opened in the middle of the second connecting rod, a pin is installed inside the rotating hole, and a sleeve is installed on the outside of the pin. The clamping mechanism is composed of a stabilizing frame, a first connecting rod, a second connecting rod, and a clamping block.

[0010] Furthermore, the limiting structure is composed of a rack, a positioning bolt, a locking block, and a positioning rod. A positioning bolt is provided at the bottom of the rack, and an external thread is opened at the bottom of the positioning bolt. A pin installed in the middle of the second connecting rod has a threaded hole in the middle position. The bottom thread of the positioning bolt is installed inside the threaded hole. A sliding hole is opened on the support rod on one side of the stabilizing frame, and the positioning bolt passes through the inside of the sliding hole.

[0011] Furthermore, a vertical mounting hole is provided in the middle of the sleeve, an opening groove is provided on each side of the mounting hole, and a positioning groove is provided at the bottom of the positioning bolt. The positioning groove is a circular ring structure.

[0012] Furthermore, a support spring is installed on the outer side of the positioning bolt.

[0013] Furthermore, a transverse positioning rod is provided on one side of the locking block, and an extension block is provided on one side of the stabilizing frame. A sliding hole is opened on one side of the extension block. The positioning rod passes through the interior of the sliding hole and a support spring and a nut are installed on the outside. The locking block and the rack mesh with each other. The rack and the locking block are both one-way limiting tooth structures.

[0014] Furthermore, a rotating adjusting bolt is installed at the middle position of the clamping block, and a threaded hole is opened at the middle position above the positioning frame, through which the adjusting bolt passes.

[0015] This utility model provides a printing roller lifting clamp, which has the following beneficial effects:

[0016] The unique limiting structure and locking mechanism, with the rack and locking block cooperating in one direction, and relying on the support spring to automatically engage, securely lock the rack and prevent accidental slippage during the hoisting of the printing roller;

[0017] The clamping block and adjusting bolt work together to clamp the hook of the hoist, and the tension spring elastically buffers the hoisting force, greatly reducing the sway of the printing roller and ensuring hoisting safety;

[0018] The scissor mechanism, consisting of the first and second links, can flexibly adjust the spacing of the clamping blocks according to the diameter of the printing roller, enabling rapid and precise clamping of printing rollers of different sizes. The outer support spring of the positioning bolt pushes the positioning rod to quickly reset, causing the clamping blocks to quickly clamp the printing roller, greatly improving work efficiency.

[0019] The scissor mechanism and adjustable clamping blocks enable the fixture to adapt to the lifting needs of various sizes of printing rollers, providing excellent versatility. The entire fixture operation process is simple and easy to understand, and the operation of the adjusting bolts, positioning bolts, and locking blocks is convenient, reducing the skill threshold for operators. The structural design of each component is reasonable, and the installation, adjustment, and disassembly processes are convenient, improving work convenience. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0021] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0022] In the attached diagram:

[0023] Figure 1 A schematic diagram of the axle side structure of the hoisting fixture after assembly is shown;

[0024] Figure 2 This application shows Figure 1 A schematic diagram of the axonal structure from the rear view;

[0025] Figure 3 An isometric view of the disassembly structure of the lifting clamp of this application is shown;

[0026] Figure 4 This application shows Figure 3 A schematic diagram of the partial disassembly and the sleeve section structure from the axial side;

[0027] Figure 5 A schematic diagram of the axial structure of the clamping mechanism of this application is shown;

[0028] Figure 6 A cross-sectional schematic diagram of the clamping mechanism of this application is shown;

[0029] Figure 7 This application shows Figure 3 A magnified structural diagram at point A.

[0030] List of reference numerals

[0031] 1. Clamping mechanism; 101. Stabilizing frame; 102. First connecting rod; 103. Second connecting rod; 104. Clamping block;

[0032] 2. Sleeve;

[0033] 3. Limiting structure; 301. Rack; 302. Positioning bolt; 303. Locking block; 304. Positioning rod;

[0034] 4. Tension spring;

[0035] 5. Positioning frame;

[0036] 6. Protective blocks;

[0037] 7. Clamping block; 701. Adjusting bolt. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] Example 1: Please refer to Figures 1 to 7 :

[0040] This utility model proposes a printing roller hoisting fixture, including: a clamping mechanism 1, which includes a stabilizing frame 101 and two second connecting rods 103. A weight-reducing hole is formed in the middle of the stabilizing frame 101, and a horizontal support rod with a cylindrical structure is provided on one side of the stabilizing frame 101. Two first connecting rods 102 are also included, each with a rotating hole on both sides. The first connecting rods 102 are mounted on the outer side of the support rod using the rotating holes. Therefore, the first connecting rods 102 are mounted using the rotating holes. On the outside of the support rod, the first connecting rod 102 is flexibly rotated relative to the support rod, providing a basic movable joint for subsequent connecting rod actions. A second connecting rod 103 is installed on one side of the first connecting rod 102 and hinged with a matching pin. A clamping block 104 is provided at the bottom of the second connecting rod 103. A clamping groove is opened on the inner side of the clamping block 104. The clamping groove has a V-shaped structure. It can be concluded that the clamping block 104 at the bottom of the second connecting rod 103 can effectively clamp the printing roller through the V-shaped clamping groove, and forms an integral clamping assembly with the second connecting rod 103.

[0041] In this embodiment of the disclosure, reference is made to Figures 1 to 7As shown, a set of tension springs 4 are installed on the upper part of the stabilizing frame 101 with bolts. A positioning frame 5 is installed on the upper part of the tension springs 4 with bolts. A clamping block 7 is installed on the inner side of the bolts. An adjusting bolt 701 with a rotating connection is installed in the middle of the clamping block 7. A threaded hole is opened in the middle of the upper part of the positioning frame 5. The adjusting bolt 701 passes through the inside of the threaded hole. It can be concluded that by the adjusting bolt 701 passing through the threaded hole on the positioning frame 5 and rotatingly connecting with the clamping block 7, the function of adjusting the up and down position of the clamping block 7 by rotating the adjusting bolt 701 is realized. The operator rotates the adjusting bolt 701 to make the clamping block 7 clamp the hook of the hoisting machine. After the hook of the hoisting machine is clamped, the force of the printing roller during hoisting is concentrated at the position of the tension spring 4. The function of the tension spring 4 is to elastically buffer the force during the hoisting of the printing roller, which solves the defect of the printing roller swinging at will during hoisting.

[0042] In this embodiment of the disclosure, reference is made to Figures 1 to 7 As shown, a slot with a V-shaped structure is opened in the middle of the bottom of the clamping block 7. A sleeve 2 is installed on the inner side of the second connecting rod 103. A rotating hole is opened in the middle of the second connecting rod 103. A pin is installed inside the rotating hole. With the cooperation of the pin, a scissor mechanism is formed between the first connecting rod 102 and the second connecting rod 103. It can be concluded that with the cooperation of the pin, the scissor mechanism formed by the first connecting rod 102 and the second connecting rod 103 can adjust the distance between the clamping blocks 104 according to the diameter of the printing roller. The clamping blocks 104 can quickly clamp printing rollers of different sizes. A sleeve 2 is installed on the outer side of the pin. After installation, the sleeve 2 can stably isolate the second connecting rod 103. The clamping mechanism 1 is composed of the stabilizing frame 101, the first connecting rod 102, the second connecting rod 103 and the clamping blocks 104.

[0043] In this embodiment of the disclosure, reference is made to Figures 1 to 7 As shown, a set of limiting structures 3 are installed in the middle position of the clamping mechanism 1. The limiting structure 3 is composed of a rack 301, a positioning bolt 302, a locking block 303, and a positioning rod 304. A positioning bolt 302 is provided at the bottom position of the rack 301. An external thread is opened at the bottom position of the positioning bolt 302. The specific opening structure, length, and pitch of the external thread are manufactured according to the existing technology. A pin installed in the middle position of the second connecting rod 103 has a threaded hole in the middle position. The bottom thread of the positioning bolt 302 is installed inside the threaded hole. A sliding hole is opened on the support rod on one side of the stabilizing frame 101. The positioning bolt 302 passes through the inside of the sliding hole. It can be concluded that by connecting the rack 301 and the second connecting rod 103 through the positioning bolt 302 and making it pass through the sliding hole of the support rod of the stabilizing frame 101, the movable connection between the rack 301 and the second connecting rod 103 is realized. At the same time, the movement trajectory of the rack 301 is restricted, so that it can move in a specific direction along the sliding hole on the support rod.

[0044] In this embodiment of the disclosure, reference is made to Figures 1 to 7 As shown, a vertical mounting hole is opened in the middle of the sleeve 2, and an opening groove is opened on both sides of the mounting hole. A positioning groove is opened at the bottom of the positioning bolt 302. The positioning groove is a circular ring structure. It can be concluded that the design of the mounting hole and opening groove of the sleeve 2, together with the circular positioning groove at the bottom of the positioning bolt 302, provides the positioning bolt 302 with an installation position and a certain amount of room for movement, while restricting the rotation position of the positioning bolt 302. A support spring is installed on the outer side of the positioning bolt 302. It can be concluded that the support spring installed on the outer side of the positioning bolt 302 pushes the positioning rod 304 to quickly return to its original position, thereby realizing the quick clamping of the printing roller, so that the printing roller can be quickly fixed during the hoisting process, improving work efficiency.

[0045] In this embodiment of the disclosure, reference is made to Figures 1 to 7 As shown, a horizontal positioning rod 304 is provided on one side of the locking block 303, and an extension block is provided on one side of the stabilizing frame 101. A sliding hole is opened on one side of the extension block. The positioning rod 304 passes through the interior of the sliding hole and a support spring and a nut are installed on the outside. The support spring pushes the locking block 303 and the rack 301 to automatically engage. The rack 301 and the locking block 303 are both one-way limiting tooth structures. It can be concluded that the locking block 303 is connected to the extension block of the stabilizing frame 101 through the positioning rod 304, and automatically engages with the rack 301 with the help of the support spring. By utilizing the one-way limiting tooth structure of the two, the position of the rack 301 is locked to prevent the printing roller from accidentally sliding during hoisting. A set of hinged positioning protective blocks 6 are installed on the outer side of the stabilizing frame 101 and the positioning frame 5, respectively. The protective blocks 6 are installed at the mounting hole position. A pin is installed at the hinge position of the protective block 6. The function of the pin is to laterally position the protective block 6. The protective block 6 achieves the effect of bolt anti-loosening and dust prevention.

[0046] Example 2, based on Example 1, with reference to Figures 1 to 7 As shown, a set of rubber pads can be installed on the inner side of the clamping block 104 in accordance with the prior art. After the rubber pads are installed, the friction between the rubber pads and the printing roller is increased.

[0047] Example 3, based on Example 1, with reference to Figures 1 to 7 As shown, the tension of the tension spring 4 is selected according to the weight of the dry printing roller, so that the tension of the tension spring 4 is greater than the weight of the printing roller.

[0048] The working principle of this embodiment:

[0049] First, the operator refers to Example 3, selects a tension spring 4 with a tension greater than the weight of the printing roller, and installs it on top of the stabilizing frame 101 with bolts. At the same time, the positioning frame 5 is installed on top of the tension spring 4 to ensure a firm connection. Check whether each component is intact, especially the rotational flexibility of the first connecting rod 102 and the second connecting rod 103. If necessary, apply an appropriate amount of lubricating oil to the rotating parts.

[0050] In the steps of adjusting the clamping mechanism (1), the scissor mechanism formed by the first connecting rod 102 and the second connecting rod 103 can move freely, expand the distance between the two clamping blocks 104, move the clamping block 104 to the clamping position of the printing roller, and the operator pulls the locking block 303 to one side with the help of the nut. At this time, the support spring on the outside of the positioning bolt 302 pushes the positioning rod 304 to quickly reset downward, and drives the clamping block 104 to tightly clamp the printing roller, so as to achieve rapid clamping of the printing roller.

[0051] In the process of connecting the hoist, the operator places the hook of the hoist between the positioning frame 5 and the clamping block 7. The operator then rotates the adjusting bolt 701 to move the clamping block 7 downward and clamp the hook of the hoist. At this time, the force of the printing roller during hoisting is concentrated at the position of the tension spring 4. The tension spring 4 provides elastic buffering for the hoisting force and prevents the printing roller from swinging randomly during hoisting.

[0052] The procedure for hoisting the printing roller is as follows: After the operator confirms that the printing roller has been firmly clamped and stably connected to the hoisting machine, the operator operates the hoisting machine to slowly lift it. During the hoisting process, the operator should pay close attention to the condition of the printing roller.

[0053] In the unloading process of the printing roller, after the operator hoists the printing roller to the designated position, the operator slowly lowers the hoist to bring the printing roller close to the placement platform. The operator then continues to widen the gap between the clamping blocks 104 and removes the clamps from the printing roller.

[0054] The following points should be noted in this article:

[0055] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0056] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0057] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A printing roller lifting clamp, comprising: The clamping mechanism (1), the limiting structure (3), and the tension spring (4) are characterized in that they include: the clamping mechanism (1), which includes a stabilizing frame (101) and a second connecting rod (103), there are two second connecting rods (103), a weight reduction hole is opened in the middle position of the stabilizing frame (101), a set of tension springs (4) are installed on the upper position of the stabilizing frame (101) with bolts, a positioning frame (5) is installed on the upper position of the tension springs (4) with bolts, a clamping block (7) is installed on the inner side of the bolts, a slot is opened in the middle position of the bottom of the clamping block (7), a sleeve (2) is installed on the inner side of the second connecting rod (103), a set of limiting structures (3) is installed in the middle position of the clamping mechanism (1), a set of hinged positioning protective blocks (6) are respectively installed on the outer side of the stabilizing frame (101) and the positioning frame (5), the protective blocks (6) are installed in the position of the mounting hole, and a pin is installed at the hinge position of the protective block (6).

2. The printing roller lifting clamp according to claim 1, characterized in that, The stabilizing frame (101) has a horizontal support rod on one side. There are two first connecting rods (102). A rotating hole is opened on each side of the first connecting rod (102). The first connecting rod (102) is installed on the outside of the support rod in conjunction with the rotating hole.

3. The printing roller lifting clamp according to claim 2, characterized in that, A second link (103) is installed on one side of the first link (102) and hinged to a mating pin. A clamping block (104) is provided at the bottom of the second link (103), and a clamping groove is opened on the inner side of the clamping block (104).

4. The printing roller lifting clamp according to claim 3, characterized in that, A rotating hole is opened in the middle of the second connecting rod (103), a pin is installed inside the rotating hole, and a sleeve (2) is installed on the outside of the pin. The clamping mechanism (1) is composed of a stabilizing frame (101), a first connecting rod (102), a second connecting rod (103), and a clamping block (104).

5. A printing roller lifting clamp according to claim 1, characterized in that, The limiting structure (3) is composed of a rack (301), a positioning bolt (302), a locking block (303), and a positioning rod (304). A positioning bolt (302) is provided at the bottom of the rack (301). An external thread is opened at the bottom of the positioning bolt (302). A pin installed in the middle of the second connecting rod (103) has a threaded hole in the middle. The bottom thread of the positioning bolt (302) is installed inside the threaded hole. A sliding hole is opened on the support rod on one side of the stabilizing frame (101). The positioning bolt (302) passes through the inside of the sliding hole.

6. A printing roller lifting clamp according to claim 5, characterized in that, A vertical mounting hole is provided in the middle of the sleeve (2), and an opening groove is provided on both sides of the mounting hole. A positioning groove is provided at the bottom of the positioning bolt (302), and a support spring is installed on the outer side of the positioning bolt (302).

7. A printing roller lifting clamp according to claim 5, characterized in that, The locking block (303) has a horizontal positioning rod (304) on one side, and the stabilizing frame (101) has an extension block on one side. A sliding hole is opened on one side of the extension block. The positioning rod (304) passes through the inside of the sliding hole and a support spring and a nut are installed on the outside. The locking block (303) and the rack (301) are engaged.

8. A printing roller lifting clamp according to claim 1, characterized in that, An adjusting bolt (701) with a rotating connection is installed in the middle position of the clamping block (7), and a threaded hole is opened in the middle position above the positioning frame (5), through which the adjusting bolt (701) passes.

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