Portable loading tool

Abstract

The invention provides a portable loading tool, and relates to the technical field of loading tools, the portable loading tool comprises a fixed arm, a pressing arm, a lifting device and a connecting piece, one end of the fixed arm is rotatably connected with one end of the pressing arm, the other end of the fixed arm is provided with a guide through hole, the other end of the pressing arm is provided with a first through hole, and the first through hole is connected with the lifting device. One end of the connecting piece is used for penetrating through the first through hole and the guide through hole to be connected with the workpiece, the other end of the connecting piece is used for being connected with the pressing arm, the fixed end of the lifting equipment is connected with the end, close to the guide through hole, of the fixed arm, and the movable end of the lifting equipment is used for abutting against the pressing arm. Through cooperative work of the fixing arm, the pressing arm, the lifting equipment, the connecting piece and the fixing assembly, the use convenience of the loading tool is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of loading tooling, and in particular to a portable loading tooling. Background Art

[0002] With the continuous development of industrial production and the advancement of manufacturing technology, loading fixtures play an increasingly important role in modern production processes. Loading fixtures are used to ensure that workpieces remain stable during processing, improve processing accuracy, and reduce production costs.

[0003] However, traditional loading tools usually use heavier materials and complex structural designs, which makes them bulky when moving and operating, unable to adapt to different usage environments, and affects the convenience of using the loading tools. Summary of the invention

[0004] The problem solved by the present invention is how to improve the convenience of using a loading tool.

[0005] In order to solve the above problems, the present invention provides a portable loading tool.

[0006] The present invention provides a cooling device, including a fixed arm, a clamping arm, a lifting device, and a connecting piece. One end of the fixed arm is rotatably connected to one end of the clamping arm, the other end of the fixed arm is provided with a guide through hole, and the other end of the clamping arm is provided with a first through hole. One end of the connecting piece is used to respectively pass through the first through hole and the guide through hole to connect with a workpiece, and the other end of the connecting piece is used to connect with the clamping arm. The fixed end of the lifting device is connected to one end of the fixed arm close to the guide through hole, and the movable end of the lifting device is used to abut against the clamping arm.

[0007] Optionally, the portable loading tool also includes a fixing component, which includes a hollow cylinder with openings at both ends, a guide through hole is provided at the other end of the fixing arm, one end of the hollow cylinder is fixedly connected to the other end of the fixing arm, and the position of the guide through hole matches the opening position of the hollow cylinder.

[0008] Optionally, a fixing plate extends from one end of the hollow cylinder in a radial direction, and the fixing plate is used to be fixedly connected to the fixing arm.

[0009] Optionally, the fixing assembly also includes an end cover and a fixing structure, the end cover is fixedly connected to the opening of one end of the hollow cylinder away from the fixing arm, the end cover is provided with a second through hole, and the fixing structure is located in the hollow cylinder and is used to be threadedly connected to the workpiece passing through the second through hole and to abut against the end cover.

[0010] Optionally, the fixing structure includes a loading nut and a torque nut sleeve, the loading nut is arranged in the cavity of the hollow cylinder, one end of the torque nut sleeve is sleeved on the loading nut, and the other end of the torque nut sleeve extends out of the cavity of the cylinder, and the loading nut is used to be threadedly connected to the workpiece passing through the second through hole and then abut against the end cover.

[0011] Optionally, the torque nut sleeve extends out of a rotating portion along a radial direction at one end away from the loading nut.

[0012] Optionally, the lifting device includes a jack and a clamp, the fixed end of the jack is fixedly connected to an end of the fixed arm close to the fixed assembly through the clamp, and the movable end of the jack is against the clamping arm.

[0013] Optionally, the connecting member includes a connecting cap and a connecting rod, the connecting cap is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is used to connect to the workpiece after passing through the first through hole and the guide through hole respectively, and the connecting cap is against the clamping arm.

[0014] Optionally, one end of the connecting piece connected to the workpiece is provided with a threaded hole, the outer wall of the workpiece is provided with threads, and the connecting piece is connected to the workpiece through threads.

[0015] Optionally, the loading tool further includes a pin shaft, and a fourth through hole is respectively provided at one end of the clamping arm and the fixed arm, and the pin shaft passes through the two fourth through holes respectively to rotatably connect the clamping arm and the fixed arm.

[0016] The beneficial effect of the portable loading tool of the present invention is: the rotation connection of one end of the fixed arm and the clamping arm can make the fixed arm and the clamping arm rotate around the connection point, the other end of the fixed arm is provided with a guide through hole, and the other end of the clamping arm is provided with a first through hole. When the fixed arm and the clamping arm are relatively rotated to be in a folded state (or called a closed state), the position of the first through hole corresponds to the position of the guide through hole, so that the position of the connector passing through the first through hole and the guide through hole is relatively fixed, and can be quickly and accurately connected to the workpiece, and then the tensile force can be loaded on both ends of the workpiece through the connector, and during the stretching process, the position of the connector is limited by the guide through hole to avoid the displacement of the connector after the force is applied, thereby ensuring the stability of the loading process and the stretching effect on the workpiece. The loading power is provided for the loading process by the lifting device, and the clamping arm is pushed. Due to the action of the lever, a greater pulling force can be generated on the workpiece through the connector. Through the coordinated cooperation of the fixed arm, clamping arm, lifting equipment and connecting parts, reliable and stable stretching operations can be performed on both ends of the workpiece. The simple structure provides strong tensile loading force and occupies less space. The stretching operations can be performed on both ends of the workpiece in different working scenes and working conditions to improve the convenience and efficiency of the loading tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a portable loading tooling according to an embodiment of the present invention;

[0018] Figure 2 is a structural schematic diagram of a fixing structure according to an embodiment of the present invention;

[0019] Figure 3 It is a schematic diagram of the stretching structure at both ends of a workpiece according to an embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 1-fixed arm; 2-clamping arm; 3-lifting equipment; 31-jack; 32-hoop; 4-connector; 41-connecting cap; 42-connecting rod; 5-fixed assembly; 51-hollow cylinder; 52-fixed plate; 53-end cover; 54-fixed structure; 541-loading nut; 542-torque nut sleeve; 5421-rotating part; 6-pin shaft; 7-workpiece. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0023] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0024] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0025] like Figure 1 and 3 As shown, a portable loading tooling provided by an embodiment of the present invention comprises a fixed arm 1, a clamping arm 2, a lifting device 3, and a connecting piece 4. One end of the fixed arm 1 is rotatably connected to one end of the clamping arm 2, the other end of the fixed arm 1 is provided with a guide through hole, and the other end of the clamping arm 2 is provided with a first through hole. One end of the connecting piece 4 is used to respectively pass through the first through hole and the guide through hole to connect with the workpiece 7, and the other end of the connecting piece 4 is used to connect with the clamping arm 2. The fixed end of the lifting device 3 is connected to one end of the fixed arm 1 close to the guide through hole, and the movable end of the lifting device 3 is used to abut against the clamping arm 2.

[0026] The portable loading tool of the embodiment of the present invention is mainly used for stretching elastic workpieces. When the workpiece needs to be stretched, such as Figure 3As shown, first, one end of the workpiece 7 is fixed to the fixed point A. The fixed point A can be selected from a structure or foundation with sufficient bearing capacity in the current working environment. The other end of the workpiece 7 is connected to the connecting piece 4 in the portable loading tooling. At the same time, the fixed arm 1 also needs a supporting point that is relatively stable with the fixed point A. When the clamping arm 2 drives the connecting piece 4 to move upward in the vertical direction, the workpiece 7 connected to the connecting piece 4 is stretched from both ends after being subjected to the pulling force of the connecting piece 4, that is, along Figure 3 The portable loading tool is stretched in the direction indicated by the arrow. Since the structure of the portable loading tool is simple, the workpiece 7 can be stretched in different working environments. By stretching the workpiece 7, the stress condition of the workpiece 7 in the actual working environment can be simulated, and the design and manufacturing process of the workpiece 7 can be optimized according to the tensile test results.

[0027] Specifically, one end of the fixed arm 1 and the clamping arm 2 are rotatably connected, and the rotatable connection can be a hinge connection or an axis connection, etc., which can make the fixed arm 1 and the clamping arm 2 rotate around the connection point. A guide through hole is provided at the other end of the fixed arm 1, and a first through hole is provided at the other end of the clamping arm 2. After one end of the connecting member 4 passes through the first through hole and the guide through hole respectively, it is connected to the workpiece 7 that needs to be stretched. The force direction and movement direction of the connecting member 4 can be limited through the guide through hole to avoid uneven force caused by position offset, which affects the stretching effect. The two ends of the workpiece 7 are respectively connected to the connecting member 4 and the fixed point A. The other end of the connecting member 4 is used to connect with the clamping arm 2. When the clamping arm 2 moves, it can drive the connecting member 4 to move at the same time, thereby stretching the two ends of the workpiece 7. It should be noted that although the clamping arm 2 drives the connecting member 4 to move in an arc trajectory, since the clamping arm 2 is used to load tension on the workpiece 7, the actual moving distance of the clamping arm 2 and the connecting member 4 is very short, which can be approximated as a linear motion. The lifting device 3 is used to control the relative rotation of the fixed arm 1 and the clamping arm 2 in the direction away from each other, providing power for the rotational movement of the clamping arm 2. The fixed end of the lifting device 3 can be fixedly connected to one end of the fixed arm 1 via the guide through hole. The fixed connection can be achieved by bolts or welding, etc., so as to keep the position of the lifting device 3 and the fixed arm 1 relatively fixed, and avoid the position displacement of the lifting device 3 after the force is applied. The moving end of the lifting device 3 is against the clamping arm 2. When the lifting device 3 is working, the clamping arm 2 is pushed to move by the moving end. Among them, the fixed arm 1, as the force-bearing structure of the evidence device 3, also requires a support point with a certain load-bearing capacity. The support point must be relatively fixed with the position of the fixed point A. When the loading tool stretches the two ends of the workpiece 7, there can be a stable support point to ensure the stretching effect on the workpiece. For example, the fixed arm 1 can be fixed on the processing platform.

[0028] Furthermore, the connecting member 4 can be a rod-shaped structure with an end cap at one end, the diameter of the end cap is larger than the diameter of the first through hole, and the end of the connecting member 4 away from the end cap is used to pass through the first through hole and the guide through hole respectively and then connect with the workpiece 7, while the end cap is stuck on one side of the first through hole. When the fixed arm 1 and the clamping arm 2 rotate relative to each other in the direction away from each other under the action of the lifting device 3, since the fixed arm 1 is supported by a pre-selected fulcrum relatively fixed to the position of the fixed point A, the clamping arm 2 is pushed by the moving end of the lifting device 3, driving the end cap stuck on one side of the first through hole away from the fixed arm 1, so that the connecting member 4 can drive the workpiece 7 connected to it to move, thereby stretching the two ends of the workpiece 7, wherein the lifting device 3 can be a hydraulic lift or an electric lift and other equipment that can lift the clamping arm 2.

[0029] In this embodiment, the fixed arm 1 and one end of the clamping arm 2 are connected by rotation, so that the fixed arm 1 and the clamping arm 2 can rotate around the connection point, and the other end of the fixed arm 1 is provided with a guide through hole, and the other end of the clamping arm 2 is provided with a first through hole. When the fixed arm 1 and the clamping arm 2 are relatively rotated to be in a folded state (or called a closed state), the position of the first through hole corresponds to the position of the guide through hole, so that the position of the connecting member 4 passing through the first through hole and the guide through hole is relatively fixed, and can be quickly and accurately connected to the workpiece 7, and then the tensile force can be loaded on both ends of the workpiece 7 through the connecting member 4, and during the stretching process, the position of the connecting member 4 is limited by the guide through hole to avoid the displacement of the connecting member 4 after the force is applied, thereby ensuring the stability of the loading process and the stretching effect on the workpiece 7. The lifting device 3 provides the loading power for the loading process, and pushes the clamping arm 2. Due to the effect of the lever, a greater pulling force can be generated on the workpiece 7 through the connecting member 4. Through the coordinated cooperation of the fixed arm 1, the clamping arm 2, the lifting device 3, and the connecting part 4, reliable and stable stretching operations can be performed on both ends of the workpiece 7. A powerful tensile loading force is provided through a simple structure, and a small space is occupied. The stretching operations can be performed on both ends of the workpiece 7 in different working scenes and working conditions to improve the convenience and efficiency of the loading tooling.

[0030] Optionally, the portable loading tool also includes a fixing component 5, which includes a hollow cylinder 51 with openings at both ends, one end of the hollow cylinder 51 is fixedly connected to the other end of the fixing arm 1, and the position of the guide through hole matches the opening position of the hollow cylinder 51.

[0031] Specifically, the portable loading tool also includes a fixing assembly 5 for fixing the connector 4 and the workpiece 7. The fixing assembly 5 may include a hollow cylinder 51 with openings at both ends. At least a portion of the workpiece 7 may be inserted into the hollow cylinder 51. One end of the hollow cylinder 51 is fixedly connected to the other end of the fixed arm 1, for example, by welding or other connection structures. The size and position of the guide through hole of the fixed arm 1 match the opening of the hollow cylinder 51. After the connector 4 passes through the first through hole, it passes through the guide through hole and enters the cavity of the hollow cylinder 51, and then accurately and quickly connects with the workpiece 7 located in the cavity.

[0032] In this optional embodiment, the hollow cylinder 51 can effectively limit and fix the connecting member 4 and the workpiece 7 entering therein, ensuring that the connecting member 4 and the workpiece 7 are connected quickly and accurately, improving the accuracy and efficiency of loading, so that the workpiece 7 can be loaded quickly.

[0033] like Figure 1 As shown, optionally, a fixing plate 52 is extended from one end of the hollow cylinder 51 along the radial direction, and the fixing plate 52 is used for being fixedly connected to the fixing arm 1 .

[0034] Specifically, at one end of the hollow cylinder 51 connected to the fixed arm 1, two symmetrical fixing plates 52 extend along the radial direction of the hollow cylinder 51, that is, when the hollow cylinder 51 is placed vertically, the fixing plate 52 extends horizontally at one end of the hollow cylinder 51, and the fixing plate 52 can also extend around the hollow cylinder 51. The width of the two symmetrically extended fixing plates 52 matches the width of the fixed arm 1, so that it can be ensured that the fixing plate 52 can be fixedly connected to the fixed arm 1, so that the stability of the hollow cylinder 51 is ensured by the fixed connection between the fixing plate 52 and the fixed arm 1. The fixing plate 52 is provided with a through hole, and a threaded hole is provided at the corresponding position of the fixed arm 1. The fixing plate 52 is threadedly connected to the threaded hole of the fixed arm 1 by passing a bolt through the through hole. In order to ensure the stability of the connection, a spring gasket can be added between the bolt and the through hole to prevent the bolt from loosening due to long-term use. At the same time, in order to increase the stability of the connection, the number of bolts used for connection can be appropriately increased.

[0035] In this optional embodiment, the connection area between the hollow cylinder 51 and the fixed arm 1 is increased by extending the fixing plate 52, and then the connection is performed through a larger connection area, which effectively ensures the stability of the connection, avoids the displacement of the fixing component 5 due to the force applied to the connecting member 4 and the workpiece 7, and affects the loading effect, thereby improving the stability and safety of the loading of the workpiece 7.

[0036] Optionally, the fixing assembly 5 also includes an end cover 53 and a fixing structure 54, the end cover 53 is fixedly connected to one end of the hollow cylinder 51 away from the fixing arm 1, the end cover 53 is provided with a second through hole, and the fixing structure 54 is located in the hollow cylinder 51, and is used to be threadedly connected to the workpiece 7 passing through the second through hole, and is used to abut against the end cover 53.

[0037] Specifically, during the loading process, the loading force for stretching the two ends of the workpiece 7 is powered by the lifting device 3. Therefore, when the loading force provided by the lifting device 3 is lost, the workpiece 7 needs to be fixed by the end cover 53 and the fixing structure 54, thereby ensuring that after the loading force is lost, the portable loading tooling can still have a tensile force on the workpiece 7. The end cover 53 is fixedly connected to the end of the hollow cylinder 51 away from the fixed arm 1, and a second through hole is provided on the end cover 53. The diameter of the second through hole matches the diameter of the workpiece 7. The workpiece 7 passes through the second through hole and enters the cavity of the hollow cylinder 51. The fixing structure 54 in the cavity has an internal threaded hole, and the outer wall of the workpiece 7 has an external thread. The workpiece 7 is threadedly connected to the fixing structure 54 in the cavity and then connected to the connecting member 4. When the workpiece 7 is stretched to a set state by the connecting member 4, the fixing structure 54 is rotated in the opposite direction along the axial direction of the workpiece 7 and abutted against the end cover 53, so that the stretched end of the workpiece 7 is limited by the fixing structure 54 and the end cover 53, so that the part of the workpiece 7 in the hollow cylinder 51 (the stretched end) is fixed. At this time, even if the loading force provided by the lifting equipment is stopped, the two ends of the workpiece 7 can still maintain the previously loaded stretched state.

[0038] In this optional embodiment, the position of the workpiece 7 at one end of the hollow cylinder 51 after loading and stretching is fixed by a fixing structure 54, which can provide a stable stretching force for the workpiece 7 and avoid changes in the force on the workpiece 7 due to fluctuations in the loaded external force, thereby affecting the stretching of the two ends of the workpiece 7.

[0039] like Figure 2 As shown, optionally, the fixing structure 54 includes a loading nut 541 and a torque nut sleeve 542, the loading nut 541 is arranged in the cavity of the hollow cylinder 51, one end of the torque nut sleeve 542 is sleeved on the loading nut 541, and the other end of the torque nut sleeve 542 extends out of the cavity of the cylinder, and the loading nut 541 is used to be threadedly connected to the workpiece 7 passing through the second through hole and then abut against the end cover 53.

[0040] Specifically, the fixing structure 54 includes a loading nut 541 and a torque nut sleeve 542 located in the hollow cylinder 51. After the workpiece 7 enters the chamber of the hollow cylinder 51 through the second through hole, it passes through the loading nut 541 and the torque nut sleeve 542 respectively, that is, the workpiece 7 is first threadedly connected with the internal thread of the loading nut 541 through the external thread, and the torque nut sleeve 542 is sleeved on the loading nut 541. For example, if the loading nut 541 is a hexagonal nut, the inner wall of one end of the torque nut sleeve 542 is a hexagonal shape matching the outer wall of the hexagonal nut, so that the torque nut sleeve 542 can be snugly sleeved on the hexagonal nut, and when the torque nut sleeve 542 rotates, it can drive the hexagonal nut to rotate. The torque nut sleeve 542 extends out of the cavity of the hollow cylinder 51 at one end away from the loading nut 541 and is located between the fixed arm 1 and the clamping arm 2. When the connecting piece 4 passes through the first through hole of the clamping arm 2 and the guide through hole of the fixed arm 1, it enters the torque nut sleeve 542 at the same time and is connected to one end of the workpiece 7 passing through the loading nut 541. When the workpiece 7 is loaded and stretched through the connecting piece 4, the workpiece 7 will drive the loading nut 541 threadedly connected thereto to move in the cavity of the hollow cylinder 51 in a direction away from the end cover 53. At this time, there is a gap between the loading nut 541 and the end cover 53. By rotating the torque nut sleeve 542, a portion of the hollow cylinder 51 is extended, thereby driving the loading nut 541 to rotate, so that the loading nut 541 rotates downward along the thread on the outer surface of the workpiece 7, so that the loading nut 541 abuts against the end cover 53 at the bottom of the hollow cylinder 51, so that the loading nut 541 and the end cover 53 clamp one end of the workpiece 7 located in the hollow cylinder 51, so that the two ends of the workpiece 7 maintain the current tensile state, even if the loading force of the lifting device 3 is lost, one end of the workpiece 7 is fixed by the loading nut 541, so that the two ends of the workpiece 7 maintain the current tensile state.

[0041] In this optional embodiment, by using the loading nut 541 and the torque nut sleeve 542 in combination, the position of the loading nut 541 on the workpiece 7 inside the cavity of the hollow cylinder 51 can be adjusted by rotating the torque nut sleeve 542 outside the cavity of the hollow cylinder 51 according to the requirements of different stretching states of the workpiece 7. Therefore, the stretching of both ends of the workpiece 7 can be accurately adjusted by the loading nut 541 to keep the workpiece 7 in the required stretching state, which can effectively avoid the inability to maintain the current stretching state of the workpiece 7 after losing the power provided by the lifting device 3.

[0042] like Figure 2 As shown, optionally, one end of the torque nut sleeve 542 away from the loading nut 541 extends a rotating portion 5421 along the radial direction.

[0043] Specifically, in order to better control the torque nut sleeve 542, a rotating portion 5421 is extended along the radial direction of the end of the torque nut sleeve 542 extending from the hollow cylinder 51. The rotating portion 5421 can also be hexagonal, so that it can be rotated by matching tools such as wrenches. At the same time, different patterns can be set on the outer wall of the rotating portion 5421 to increase or decrease friction, so as to facilitate rotation by other tools or manual operation. By setting a reasonable rotating portion 5421, the torque nut sleeve 542 can be rotated quickly and accurately, thereby increasing the efficiency of the loading tooling operation and further improving the portability of the loading tooling operation.

[0044] like Figure 1 As shown, optionally, the lifting device 3 includes a jack 31 and a clamp 32, the fixed end of the jack 31 is fixedly connected to an end of the fixed arm 1 close to the fixed assembly 5 through the clamp 32, and the movable end of the jack 31 is against the clamping arm 2.

[0045] Exemplarily, the lifting device 3 may use a jack 31, and the fixed end of the jack 31 may be fixed to the fixed arm 1 by a clamp 32, and the position of the jack 31 may be fixed at one end close to the fixed assembly 5, that is, the base of the jack 31 may be fixed to one end of the fixed arm 1 close to the fixed assembly 5 by a clamp 32, and the movable end of the jack 31, that is, the top of the piston, abuts against the clamping arm 2. When the workpiece 7 needs to be loaded, the top of the piston at the movable end may be operated to lift the clamping arm 2 abutting against it, and then the clamping arm 2 may be relatively rotated in a direction away from the fixed arm 1, thereby driving the connector 4 to load and stretch the workpiece 7. Since the jack 31 has a simple structure and occupies little space, by using the jack 31 as the lifting device 3, the operating efficiency and space occupation of the loading tooling may be reduced, and the portability of the loading tooling may be effectively improved.

[0046] like Figure 1 As shown, optionally, the connecting member 4 includes a connecting cap 41 and a connecting rod 42, the connecting cap 41 is fixedly connected to one end of the connecting rod 42, and the other end of the connecting rod 42 is used to connect to the workpiece 7 after passing through the first through hole and the guide through hole respectively, and the connecting cap 41 is against the clamping arm 2.

[0047] Specifically, the connection cap 41 of the connector 4 is fixedly connected to one end of the connection rod 42, and the diameter of the connection rod 42 matches the diameter of the first through hole, so that the connection rod 42 can smoothly pass through the first through hole. The size of the connection cap 41 is larger than the diameter of the first through hole. After the connection rod 42 passes through the first through hole and the guide through hole, it can be against the clamping arm 2 protruding from the first through hole through the connection cap 41. When loading, the clamping arm 2 can push the connection cap 41 to move, and then the connection cap 41 transmits the loading force to the connection rod 42 fixedly connected to it. After the connection rod 42 is stressed, it stretches the workpiece 7 connected to the other end. Among them, the connection cap 41 can be circular, square or other suitable geometric shapes. For example, if considering better contact stability with the clamping arm 2, the circular connection cap 41 can make the pressure evenly distributed on the contact surface. Its size should be designed according to the pressure it bears and the contact area requirements with the clamping arm 2. If the pressure is large, it is usually designed to have a larger area to prevent the local pressure from being too large and causing damage to the connection cap 41 or the clamping arm 2.

[0048] like Figure 1 As shown, optionally, a threaded hole is provided at one end of the connecting member 4 connected to the workpiece 7, and a thread is provided on an outer wall of one end of the workpiece 7, and the connecting member 4 is connected to the workpiece 7 through threads.

[0049] Specifically, a threaded hole is provided at the bottom of one end of the connecting piece 4 for connecting to the workpiece 7, and a thread matching the threaded hole is also provided on the outer wall of the workpiece 7, so that the workpiece 7 is threadedly connected to the threaded hole of the connecting piece 4 through the thread of the outer wall. Through the threaded connection, the reliability of the connection can be effectively improved, the connection is firm and the anti-loosening performance is good, it is easy to install and disassemble, and can be reused.

[0050] like Figure 1 As shown, optionally, the portable loading tool further includes a pin shaft 6, and a fourth through hole is respectively provided at one end of the clamping arm 2 and the fixed arm 1, and the pin shaft 6 passes through the two fourth through holes respectively to rotatably connect the clamping arm 2 and the fixed arm 1.

[0051] Specifically, a fourth through hole is respectively provided at one end of the rotationally connected clamping arm 2 and the fixed arm 1, and a pin shaft 6 is respectively passed through the fourth through holes of the fixed arm 1 and the clamping arm 2. Anti-slip structures are provided at both ends of the pin shaft 6, so that the clamping arm 2 and the fixed arm 1 can rotate around the pin shaft 6. The rotational connection is achieved through the pin shaft 6, which can make the loading tooling more flexible, adapt to the changes of the workpiece 7, and adjust the stretching distance according to the loading force of the lifting equipment 3.

[0052] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A portable loading tool, characterized in that: It comprises a fixed arm (1), a clamping arm (2), a lifting device (3), and a connecting piece (4); one end of the fixed arm (1) is rotatably connected to one end of the clamping arm (2); the other end of the fixed arm (1) is provided with a guide through hole; the other end of the clamping arm (2) is provided with a first through hole; one end of the connecting piece (4) is used to pass through the first through hole and the guide through hole respectively to connect with a workpiece (7); the other end of the connecting piece (4) is used to connect with the clamping arm (2); the fixed end of the lifting device (3) is connected to one end of the fixed arm (1) close to the guide through hole; the movable end of the lifting device (3) is used to abut against the clamping arm (2).

2. The portable loading tool according to claim 1, characterized in that: It also comprises a fixing assembly (5), the fixing assembly (5) comprising a hollow cylinder (51) with openings at both ends, one end of the hollow cylinder (51) being fixedly connected to the other end of the fixing arm (1), and the position of the guide through hole matches the position of the opening of the hollow cylinder (51).

3. The portable loading tool according to claim 2, characterized in that: A fixing plate (52) extends from one end of the hollow cylinder (51) in a radial direction, and the fixing plate (52) is used for being fixedly connected to the fixing arm (1).

4. The portable loading tool according to claim 2, characterized in that: The fixing assembly (5) further comprises an end cover (53) and a fixing structure (54); the end cover (53) is fixedly connected to an opening at one end of the hollow cylinder (51) away from the fixing arm (1); the end cover (53) is provided with a second through hole; the fixing structure (54) is located in the hollow cylinder (51) and is used for being threadedly connected to the workpiece (7) passing through the second through hole and for abutting against the end cover (53).

5. The portable loading tool according to claim 4, characterized in that: The fixing structure (54) comprises a loading nut (541) and a torque nut sleeve (542); the loading nut (541) is arranged in the cavity of the hollow cylinder (51); one end of the torque nut sleeve (542) is sleeved on the loading nut (541), and the other end of the torque nut sleeve (542) extends out of the cavity of the cylinder; the loading nut (541) is used to be threadedly connected to the workpiece (7) passing through the second through hole and then abut against the end cover (53).

6. The portable loading tool according to claim 5, characterized in that: An end of the torque nut sleeve (542) away from the loading nut (541) extends out a rotating portion (5421) along a radial direction.

7. The portable loading tool according to claim 1, characterized in that: The lifting device (3) comprises a jack (31) and a clamp (32); the fixed end of the jack (31) is fixedly connected to an end of the fixed arm (1) close to the fixed assembly (5) via the clamp (32); and the movable end of the jack (31) abuts against the clamping arm (2).

8. The portable loading tool according to claim 1, characterized in that: The connecting member (4) comprises a connecting cap (41) and a connecting rod (42); the connecting cap (41) is fixedly connected to one end of the connecting rod (42); the other end of the connecting rod (42) is used to pass through the first through hole and the guide through hole respectively and then be connected to the workpiece (7); the connecting cap (41) abuts against the clamping arm (2).

9. The portable loading tool according to claim 1, characterized in that: One end of the connecting piece (4) connected to the workpiece (7) is provided with a threaded hole, the outer wall of the workpiece (7) is provided with threads, and the connecting piece (4) and the workpiece (7) are connected via threads.

10. The portable loading tool according to claim 1, characterized in that: It also comprises a pin shaft (6), one end of the clamping arm (2) and the fixed arm (1) are respectively provided with a fourth through hole, and the pin shaft (6) passes through the two fourth through holes respectively to rotatably connect the clamping arm (2) and the fixed arm (1).

Images