Pipeline scissor jack with pipe diameter self-adaption function

Abstract

The pipe diameter self-adaptive pipeline scissor jack comprises a jack body and a self-adaptive movable clamp body set arranged on the jack body, when the jack is used, a pipeline is located on the self-adaptive movable clamp body set, and the jack can adapt to pipelines with different pipe diameters; and meanwhile, pipeline deformation damage caused by stress concentration can be avoided.

Description

Technical Field

[0001] The invention relates to a pipeline scissor-type jack, in particular to a pipeline scissor-type jack with self-adaptation of pipe diameter. Background Art

[0002] The jack is a light and small lifting equipment, mainly used in factories, mines, transportation and other departments for vehicle repair and other lifting, support and other work. The following is a detailed introduction to the jack: The working principle of the jack is mainly to convert a small force into a larger force, so as to achieve the lifting and lowering of heavy objects. It usually contains a piston and cylinder structure inside. When the external force acts on the piston, the piston moves up and down in the cylinder, thereby pushing the heavy object up and down. According to the different working principles, jacks can be divided into many types, among which the most common are hydraulic jacks and screw jacks. Hydraulic jack: Use the incompressibility of liquid and Pascal's law to achieve force transmission and amplification. It has the advantages of simple structure, convenient operation, smooth lifting, etc., but the lifting height is limited and the lifting speed is slow. Screw jack: Lifting is achieved by rotating the screw rod. It has the advantages of high stability, but the lifting speed is slow, the efficiency is low, and the lifting weight is relatively small. The structure of the jack is light, strong, flexible and reliable, and can be carried and operated by one person. Its structure is usually composed of steel shell, screw, nut, rotating handle and other components. The screw jack may also contain components such as a ratchet handle to facilitate labor-saving and smooth lifting. Jacks can be divided into screw jacks, hydraulic jacks, rack jacks, etc. according to their structural characteristics; they can be divided into mechanical jacks and hydraulic jacks according to their working principles. Different types of jacks have different characteristics and applicable scenarios. At the same time, jacks also have different load-bearing capacities, such as 5t, 10t, 15t, 30t, 50t and other specifications to meet the lifting needs of different weights.

[0003] Pipe jack is a tool specially used for supporting and fixing, which is widely used in various pipeline construction and maintenance. With the rapid development of the national economy, the amount of engineering pipeline installation and maintenance has increased dramatically. The existing pipe jack technology is diverse, each with its own advantages. Usually, the appropriate type is selected according to project requirements and site conditions to ensure the efficiency and safety of the project.

[0004] Publication No. CN112692612A, a new type of clamping pliers, characterized in that: it includes a pliers base, a fixed pliers group, and a movable pliers group, the center of the pliers base is provided with a dovetail groove structure, and the V-shaped inclined surfaces on both sides of the dovetail groove of the pliers base are provided with equally spaced positioning grooves and clamping straight grooves; a fixed pliers group is fixedly installed at one end of the pliers base, and the fixed pliers group is composed of a fixed pliers body, a first quick-release nut, and a fixed pliers body bolt, the center of the fixed pliers body is provided with a stepped through hole from top to bottom, and the lower side of the fixed pliers body is provided with a positioning tooth that matches the positioning groove of the pliers base; the center of the first quick-release nut is provided with a threaded hole, and the fixed pliers body bolt passes through the fixed pliers body and is threadedly connected to the first quick-release nut; The other end of the clamp base is an active clamp group, which consists of an active clamp body, a second quick-release nut, an active clamp body bolt, a sliding tongue, and a tightening screw. The center of the active clamp body is provided with a step through hole from top to bottom, and the active clamp body is provided with a sliding tongue assembly hole and a sliding tongue bolt hole from left to right. The lower side of the active clamp body is provided with a positioning tooth that matches the clamp base positioning groove; the center of the second quick-release nut is provided with a threaded hole; the sliding tongue is provided with an active clamp body bolt through slot in the up and down directions, a clamping tooth is provided on the left side of the sliding tongue, and a sliding tongue threaded hole is provided on the right side of the sliding tongue; the active clamp body bolt passes through the active clamp body, the sliding tongue and the second quick-release nut in sequence and is screwed and connected. The new clamp is fixedly installed on other components of the fixture through the clamp base through the clamping holes evenly distributed at the bottom of the clamp base. It can be used as a single set or in combination of multiple sets. When multiple sets are used, the device is required to be fixed on the same size plane. When the plate workpiece is hoisted on the plane of the clamp base, the operator quickly installs the movable clamp group, fixes the movable clamp group close to the workpiece, and the positioning teeth on the lower side of the movable clamp body cooperate with the positioning groove of the clamp base to limit the left and right movement of the movable clamp group. Then, a manual or pneumatic wrench is used to tighten the bolts of the movable clamp body to fix the movable clamp group on the clamp base, and then the tightening screw is tightened to make the sliding tongue press against the workpiece. After the processing is completed, the tightening screw is loosened by a manual or pneumatic wrench to remove the workpiece. This device can realize the clamping operation of workpieces with a size range of 60mm-1800mm. The new clamp has a wide range of applications and greatly improves the work efficiency of clamping operations.

[0005] Traditional pipe jacks are usually designed for pipes of specific diameters. The fixed-size clamps cannot flexibly adapt to different pipe diameters and usually require additional adapters to work. However, the adapters must be constantly adjusted according to the changes in pipe diameters, which increases the complexity of construction and reduces the efficiency of the project. When traditional jacks are used for pipes with inappropriate diameters, the clamps may not be able to fit tightly against the pipe surface, causing stress concentration and deformation and damage to the pipe. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a pipe scissor jack with pipe diameter adaptation, which can adapt to pipes of different diameters and avoid deformation and damage of the pipe caused by stress concentration.

[0007] To achieve the above object, the present invention discloses a pipe scissor jack with pipe diameter adaptation, comprising a jack body and an adaptive movable clamp body group arranged on the jack body. When in use, the pipe is located on the adaptive movable clamp body group.

[0008] Furthermore, the adaptive movable jaw body group includes N layers of movable jaw bodies arranged from top to bottom, wherein the bottom layer of movable jaw bodies includes one movable jaw body, and one movable jaw body in the lower layer of movable jaw bodies corresponds to several movable jaw bodies in the adjacent upper layer of movable jaw bodies, wherein each movable jaw body in the 2 to N layers of movable jaw bodies is provided with several guide grooves, and the lower end of the movable jaw body is located on the corresponding guide groove.

[0009] Furthermore, a slide rail is provided at the lower end of the movable clamp body, and the slide rail is located in the corresponding guide groove.

[0010] Furthermore, each guide groove is provided with a locking piece for preventing the movable clamp body from over-displacing.

[0011] Furthermore, the upper surface of each movable clamp body is a curved structure.

[0012] Furthermore, a flexible pad is provided on the upper surface of each movable jaw body in the uppermost movable jaw body.

[0013] Furthermore, the jack body includes a support and a fixed clamp body, and a plurality of pairs of scissor arms are arranged on the support, wherein the lower end of each scissor arm is connected to the support by a first bolt, and the upper end of each scissor arm is connected to the fixed clamp body by a second bolt, and the bottommost movable clamp body is fixed to the fixed clamp body.

[0014] Furthermore, the jack body also includes a plurality of screw rods, one of which corresponds to a pair of scissor arms, a fixing sleeve is provided at one end of the screw rod, and the other end of the screw rod passes through two of the corresponding pair of scissor arms.

[0015] Furthermore, a reinforcement plate is provided on the support.

[0016] The present invention discloses a pipe scissor jack with self-adaptive pipe diameter, comprising a jack body and a self-adaptive movable clamp body group arranged on the jack body. When in use, the pipe is located on the self-adaptive movable clamp body group.

[0017] The adaptive movable jaw body group includes N layers of movable jaw bodies arranged from top to bottom, wherein the bottom layer of movable jaw bodies includes one movable jaw body, one movable jaw body in the lower layer of movable jaw bodies corresponds to several movable jaw bodies in the adjacent upper layer of movable jaw bodies, wherein each movable jaw body in the 2 to N layers of movable jaw bodies is provided with several guide grooves, and the lower end of the movable jaw body is located on the corresponding guide groove;

[0018] A slide rail is provided at the lower end of the movable clamp body, and the slide rail is located in the corresponding guide groove;

[0019] Each guide groove is provided with a locking piece to prevent the movable clamp from over-displacing;

[0020] The upper surface of each movable clamp body is a curved surface structure;

[0021] The upper surface of each movable jaw body in the uppermost movable jaw body is provided with a flexible pad.

[0022] The present invention has the following beneficial effects:

[0023] During specific operation of the pipe scissor jack with pipe diameter adaptation described in the present invention, an adaptive movable clamp body group is arranged on the top of the jack body. In terms of practicality, the pipe is placed on the adaptive movable clamp body group, and the adaptive movable clamp body group is deformed to adapt to the size of the current pipe, so that the pipe surface is connected to the adaptive movable clamp body group to the greatest extent, thereby avoiding the problem of deformation and damage of the pipe caused by stress concentration.

[0024] In addition, the adaptive movable jaw body group includes N layers of movable jaw bodies arranged from top to bottom, wherein the bottom layer of movable jaw bodies includes one movable jaw body, and one movable jaw body in the lower layer of movable jaw bodies corresponds to several movable jaw bodies in the adjacent upper layer of movable jaw bodies, wherein each movable jaw body in the 2 to N layers of movable jaw bodies is provided with several guide grooves, the lower end of the movable jaw body is located on the corresponding guide groove, and the upper surface of each movable jaw body is a curved surface structure, and the contact area between the pipeline and the upper layer of movable jaw bodies of the nozzle is increased through the sliding of each movable jaw body.

[0025] Furthermore, each guide groove is provided with a locking piece to prevent the movable clamp body from excessive displacement, thereby achieving high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a structural diagram of the present invention.

[0028] Among them, 1 is an adaptive movable clamp body group, 21 is a first bolt, 22 is a second bolt, 3 is a scissor arm, 4 is a fixed sleeve, 5 is a reinforcing plate, 6 is a support, 7 is a screw, and 8 is a fixed clamp body. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0031] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0032] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0033] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0034] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0037] Embodiment 1

[0038] refer to Figure 1 The pipe scissor jack with pipe diameter adaptation described in the present invention comprises a jack body and an adaptive movable jaw body group 1 arranged on the jack body. When in use, the pipeline is located on the adaptive movable jaw body group 1; the adaptive movable jaw body group 1 comprises N layers of movable jaw bodies arranged from top to bottom, wherein the bottom layer of movable jaw bodies comprises an movable jaw body, and an movable jaw body in the lower layer of movable jaw bodies corresponds to several movable jaw bodies in the adjacent upper layer of movable jaw bodies, wherein each movable jaw body in the 2 to N layers of movable jaw bodies is provided with several guide grooves, and the lower end of the movable jaw body is located on the corresponding guide groove; the lower end of the movable jaw body is provided with a slide rail, and the slide rail is located in the corresponding guide groove; each guide groove is provided with a locking piece for preventing the movable jaw body from over-displacing; the upper surface of each movable jaw body is a curved surface structure; the upper surface of each movable jaw body in the uppermost layer of movable jaw bodies is provided with a flexible pad.

[0039] Embodiment 2

[0040] refer to Figure 1 The pipe scissor jack with pipe diameter adaptation of the present invention comprises a jack body and an adaptive movable clamp body group 1 arranged on the jack body;

[0041] The adaptive movable jaw body group 1 includes N layers of movable jaw bodies arranged from top to bottom, wherein the bottom movable jaw body includes one movable jaw body, and one movable jaw body in the lower layer of movable jaw bodies corresponds to several movable jaw bodies in the adjacent upper layer of movable jaw bodies, wherein each movable jaw body in the 2 to N layers of movable jaw bodies is provided with several guide grooves, and the lower end of the movable jaw body is located on the corresponding guide groove, specifically, the lower end of the movable jaw body is provided with a slide rail, and the slide rail is located in the corresponding guide groove. In addition, each guide groove is provided with a locking piece to prevent the movable jaw body from excessive displacement.

[0042] As an embodiment of the present invention, the upper surface of each movable clamp body is a curved structure to increase the contact area with the pipeline. The upper surface of each movable clamp body in the uppermost layer of movable clamp bodies is provided with a flexible pad to increase friction while protecting the pipeline from being scratched.

[0043] As an embodiment of the present invention, the jack body includes a support 6 and a fixed clamp body 8, and a plurality of pairs of scissor arms 3 are arranged on the support 6, wherein the lower end of each scissor arm 3 is connected to the support 6 by a first bolt 21, and the upper end of each scissor arm 3 is connected to the fixed clamp body 8 by a second bolt 22, and the bottommost movable clamp body is fixed to the fixed clamp body 8.

[0044] As an embodiment of the present invention, the jack body further includes a plurality of screw rods 7 , one of which corresponds to a pair of scissor arms 3 , a fixing sleeve 4 is provided at one end of the screw rod 7 , and the other end of the screw rod 7 passes through two of the corresponding pair of scissor arms 3 .

[0045] As an implementation mode of the present invention, a reinforcing plate 5 is provided on the support 6 .

[0046] It should be noted that the present invention takes into account the adaptability to various pipe sizes and shapes, as well as improving the convenience and safety of operation. Its adaptive movable clamp body group 1 can be subjected to the pipe load and thus slide and deform. Ultimately, the entire clamp body maintains the maximum contact surface with the pipe while providing stable support, so that the pipe is evenly stressed, thereby protecting the pipe. At the same time, the scissor jack has a simple structure and is easy to move. By rotating the fixing sleeve 4, the scissor arm 3 will be pushed or pulled, thereby realizing the lifting and lowering of the jack. The present invention has a wide range of applicability and can flexibly respond to the maintenance and construction needs of various pipelines while ensuring the safety of construction and improving efficiency.

[0047] The present invention has the following characteristics:

[0048] Highly adaptable: By setting N layers of movable clamps from top to bottom, the jack can handle pipes of various diameters. Each layer of movable clamps can be adaptively adjusted according to the diameter of the pipe, ensuring that the jack can stably clamp the pipe.

[0049] Structural stability: The bottom layer of movable jaws is designed as a separate movable jaw, which provides basic clamping force. The movable jaws on the upper layers are connected to the lower layer of jaws through guide grooves. This design not only enhances the stability of the structure, but also ensures accurate alignment between the jaws. The setting of the guide groove enables the movable jaws to maintain the correct direction when moving and adjusting, avoiding the risk of unstable clamping or damage to the pipeline due to misalignment.

[0050] Convenient operation: The design of the adaptive movable clamp body group simplifies the use of the jack on pipes of different diameters. Users do not need to replace clamps of different sizes or make complicated adjustments, just choose the appropriate clamp body combination according to the diameter of the pipe. This design also reduces the preparation time of the jack during use and improves work efficiency.

[0051] Wide application: Due to its high adaptability, the jack can be widely used in various occasions where pipes need to be clamped, such as pipe maintenance, installation, testing, etc. Especially in occasions where the pipe diameter varies greatly, the jack can show its unique advantages and save users a lot of time and cost.

[0052] Potential improvement direction: Although this design has many advantages, there are still some potential improvement directions. For example, the material strength of the movable clamp can be increased to meet the clamping needs of larger diameter or heavier pipes. It is also possible to consider adding some auxiliary mechanisms, such as fine-tuning devices or locking mechanisms, to further improve the stability and ease of use of the jack.

[0053] In summary, the pipe scissor jack with pipe diameter adaptation can achieve stable clamping of pipes with different diameters through its unique design, and has high adaptability, structural stability, convenient operation and wide application. At the same time, the design also provides broad space for future improvement and upgrading.

[0054] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0055] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A pipe scissor jack with self-adaptive pipe diameter, characterized in that: It comprises a jack body and an adaptive movable clamp body group (1) arranged on the jack body. When in use, the pipeline is located on the adaptive movable clamp body group (1).

2. The pipe scissor jack with pipe diameter adaptation according to claim 1, characterized in that: The adaptive movable jaw body group (1) comprises N layers of movable jaw bodies arranged from top to bottom, wherein the bottom layer of movable jaw bodies comprises one movable jaw body, one movable jaw body in the lower layer of movable jaw bodies corresponds to a plurality of movable jaw bodies in the adjacent upper layer of movable jaw bodies, wherein each movable jaw body in the 2 to N layers of movable jaw bodies is provided with a plurality of guide grooves, and the lower end of the movable jaw body is located on the corresponding guide groove.

3. The pipe scissor jack with pipe diameter adaptation according to claim 2, characterized in that: The lower end of the movable clamp body is provided with a slide rail, which is located in the corresponding guide groove.

4. The pipe scissor jack with pipe diameter adaptation according to claim 2, characterized in that: Each guide groove is provided with a locking piece to prevent the movable clamp body from excessive displacement.

5. The pipe scissor jack with pipe diameter adaptation according to claim 2, characterized in that: The upper surface of each movable clamp body is a curved surface structure.

6. The pipe scissor jack with pipe diameter adaptation according to claim 2, characterized in that: The upper surface of each movable jaw body in the uppermost movable jaw body is provided with a flexible pad.

7. The pipe scissor jack with pipe diameter adaptation according to claim 1, characterized in that: The jack body comprises a support (6) and a fixed clamp body (8), wherein a plurality of pairs of scissor arms (3) are arranged on the support (6), wherein the lower end of each scissor arm (3) is connected to the support (6) via a first bolt (21), and the upper end of each scissor arm (3) is connected to the fixed clamp body (8) via a second bolt (22), and the bottommost movable clamp body is fixed to the fixed clamp body (8).

8. The pipe scissor jack with pipe diameter adaptation according to claim 7, characterized in that: The jack body further comprises a plurality of screw rods (7), one of the screw rods (7) corresponds to a pair of scissor-type arms (3), one end of the screw rod (7) is provided with a fixing sleeve (4), and the other end of the screw rod (7) passes through two of the corresponding scissor-type arms (3).

9. The pipe scissor jack with pipe diameter adaptation according to claim 7, characterized in that: A reinforcing plate (5) is provided on the support (6).

10. A pipe scissor jack with self-adaptive pipe diameter, characterized in that: It comprises a jack body and an adaptive movable clamp body group (1) arranged on the jack body, and when in use, the pipeline is located on the adaptive movable clamp body group (1); The adaptive movable jaw body group (1) comprises N layers of movable jaw bodies arranged from top to bottom, wherein the bottom layer of movable jaw bodies comprises one movable jaw body, one movable jaw body in the lower layer of movable jaw bodies corresponds to a plurality of movable jaw bodies in the adjacent upper layer of movable jaw bodies, wherein each movable jaw body in the 2 to N layers of movable jaw bodies is provided with a plurality of guide grooves, and the lower end of the movable jaw body is located on the corresponding guide groove; A slide rail is provided at the lower end of the movable clamp body, and the slide rail is located in the corresponding guide groove; Each guide groove is provided with a locking piece to prevent the movable clamp from over-displacing; The upper surface of each movable clamp body is a curved surface structure; The upper surface of each movable jaw body in the uppermost movable jaw body is provided with a flexible pad.

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