A combined weight piece and its installation method

Abstract

The present invention discloses a combined weight piece and an installation method thereof, belonging to the technical field of weight piece manufacturing. To solve the problems of poor stability or laborious combination when the weight pieces are combined on different positioning rods, a ring-shaped spring is arranged inside the arc-shaped guide groove, and both ends of the ring-shaped spring are respectively abutted against the abutting plate and the slider. When the weight piece bodies are stacked, the connecting piece is clamped inside the connecting slide rail. Through repeated operations, multiple weight piece bodies can be connected into a whole, improving the overall stability of the weight pieces. When installing the weight piece bodies on a non-cylindrical positioning rod, the weight piece bodies can be placed and fixed in sequence without splicing all the weight pieces into a whole and then putting them down along the direction of the positioning rod, improving the convenience and installation efficiency when installing the weight piece bodies. During replacement and disassembly, the manual push block can also be used to solve the clamping of a single weight piece body and perform disassembly one by one, and the combination disassembly is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of weight hammer piece manufacturing, in particular to a combined weight hammer piece and an installation method thereof. Background Art

[0002] Generally, a counterweight hammer is required in the jumper string of the tension tower to prevent the conductor from swinging, ensure the electrical safety distance from the tower, and avoid discharge to the tower. In recent years, with the large-scale application of composite insulators for overhead transmission lines, especially the suspension string of the drainage line of the tension tower, the composite insulator is light in weight and has poor wind deflection resistance, which is prone to wind deflection discharge accidents. Therefore, it is necessary to install a counterweight hammer to improve the wind deflection resistance of the transmission line, prevent the conductor from swinging, ensure the electrical safety distance from the tower, and avoid discharge to the tower.

[0003] There are related patents for weight pieces in the prior art, such as publication number CN111725762A, which discloses a superimposed combined weight piece and a manufacturing method thereof, which belongs to the field of weight piece manufacturing technology, and includes a weight piece body, a square groove is provided on the upper surface of the weight piece body, a connecting rod installation groove is provided in the middle of the weight piece body, a plurality of weight piece bodies are placed overlappingly, and docking pieces are symmetrically installed on both sides of the connecting rod installation groove in the middle of the plurality of weight pieces, and the docking pieces are symmetrically distributed with the center point of the circle of the weight piece body as the center. The patented superimposed combined weight piece and a manufacturing method thereof, the whole combined weight piece is integrated into a whole, which improves the overall stability, and when the weight piece is assembled and installed on the cable, its shock resistance is increased, the safety of use is improved, and it is convenient to disassemble and assemble, and can effectively improve the density and waterproof performance of the coating, with high bonding strength, high stability in use, and strong practicality, and the square connecting rod installation groove polished by a file increases the friction of the connection during installation, which improves the stability of installation.

[0004] The above patent actually has the following problems in actual operation:

[0005] Under the prior art, when the weight hammer pieces are assembled and installed, cylindrical or polygonal positioning rods are often selected for connection and installation. In order to improve the stability between adjacent weight hammer pieces, the upper and lower weight hammer pieces are often assembled by clamping. However, when using a cylindrical positioning rod, after installation, the adjacent weight hammer pieces may rotate along the cylinder due to shaking and vibration, thereby releasing the clamping combination and reducing stability. However, when using a polygonal positioning rod, although the problem of the weight hammer piece rotating along the positioning rod to release the clamping of the guide column will not occur, all the weight hammer pieces need to be rotated together and clamped together and then inserted into the polygonal positioning rod together, which is cumbersome, time-consuming and labor-intensive. Summary of the invention

[0006] The object of the present invention is to provide a combined weight piece and its installation method to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: A combined weight piece, including a weight piece body. A connecting rod installation groove is opened in the middle of the top surface of the weight piece body. The connecting rod installation groove communicates from the top surface of the weight piece body to the bottom surface of the weight piece body. Square grooves are provided on the top surface of the weight piece body. There are two square grooves, and the two square grooves are symmetrically arranged and respectively opened on both sides of the weight piece body. A top ring groove is opened on the top surface of the weight piece body, and a bottom ring groove is opened on the bottom surface of the weight piece body. Side sliding grooves are circumferentially opened on the side surface of the weight piece body.

[0008] Further, the top ring groove is integrally annularly arranged, and a slot is opened on the top ring groove. The bottom ring groove is integrally annularly arranged, and the sizes and positions in the vertical direction of the top ring groove and the bottom ring groove are the same.

[0009] Further, an arc-shaped guide groove and a connecting slide rail are opened inside the weight piece body. The arc-shaped guide groove is arranged below the connecting slide rail. The arc-shaped guide groove and the connecting slide rail are non-connected and spaced apart. The inner diameter size of the arc-shaped guide groove is the same as the inner diameter size of the connecting slide rail.

[0010] Further, the connecting slide rail is arranged below the top ring groove. The connecting slide rail is connected to the top ring groove and is connected to the outside of the weight piece body through the top ring groove. The width size of the slot is the same as the width size of the connecting slide rail.

[0011] Further, the arc-shaped guide groove is arranged above the bottom ring groove. The arc-shaped guide groove is connected to the bottom ring groove and is connected to the outside of the weight piece body through the bottom ring groove. Two abutting plates are arranged inside the arc-shaped guide groove. The two abutting plates are symmetric about the central axis of the weight piece body. The two abutting plates divide the arc-shaped guide groove into two identical and symmetrical semi-arc guide grooves. Rings are arranged inside the two semi-arc guide grooves. Both ends of the ring are respectively fixedly connected to the two abutting plates. Sliders are arranged inside the two semi-arc guide grooves. A sliding hole is opened inside the slider. The inner diameter size of the sliding hole matches the size of the ring. The slider is slidably connected to the ring through the sliding hole. Two annular spring rings are arranged inside the arc-shaped guide groove. The two annular spring rings are respectively sleeved on the two rings. One end of the annular spring ring abuts against the abutting plate, and the other end of the annular spring ring abuts against the side surface of the slider.

[0012] Furthermore, a connecting plate is provided at the bottom of the slider, and the thickness of the connecting plate matches the width of the bottom ring groove. The connecting plate is slidably arranged inside the bottom ring groove. A connecting piece is provided on the end of the connecting piece away from the slider. The shape and size of the connecting piece are the same as those of the slider. The connecting piece is arranged below the body of the heavy hammer piece. The slider, the connecting plate and the connecting piece are integrally formed, and the size of the connecting piece matches the slot.

[0013] Furthermore, the horizontal height position of the slider is the same as the position of the side slide groove, an inner slide groove is opened inside the side slide groove, the side slide groove is connected to the arc-shaped guide groove through the inner slide groove, a connecting rod is provided on the side of the slider close to the inner slide groove, the connecting rod is horizontally arranged, the connecting rod is slidably arranged inside the inner slide groove, and a manual push block is provided on the end of the connecting rod away from the slider, the size of the manual push block matches the side slide groove, and the manual push block is slidably arranged inside the side slide groove.

[0014] Furthermore, when the weight piece bodies are stacked, the connecting piece of the weight piece body located on the upper side is clamped inside the connecting slide rail of the weight piece body located on the lower side.

[0015] Another technical problem to be solved by the present invention is to provide a method for installing a combined weight piece, comprising the following steps:

[0016] Step 1: Insert the bottom weight hammer body into the positioning rod through the connecting rod installation slot, and slide the weight hammer body from top to bottom to the bottom of the positioning rod;

[0017] Step 2: Insert another weight hammer body into the positioning rod through the connecting rod installation slot and slide it from top to bottom to the top of the bottom weight hammer body;

[0018] Step 3: Hold the weight hammer body with both hands and use your fingers to move the manual push block. The manual push block drives the slider to move along the direction of the ring through the connecting rod. When the connecting piece moves to the position of the slot, press the handheld weight hammer body down and press the connecting piece to the inside of the connecting slide rail through the slot. Then release the manual push block. The slider leaves the slot position and resets under the action of the annular spring ring, completing the clamping connection between the upper and lower adjacent weight hammer bodies.

[0019] Step 4: Repeat steps 2 and 3 until all the weight plates are installed on the positioning rods.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the prior art, when assembling and installing the weight pieces, a cylindrical or polygonal positioning rod is often selected for connection and installation. In order to improve the stability between adjacent weight pieces, the upper and lower weight pieces are often connected and combined by a clamping method. However, when using a cylindrical positioning rod, after the installation is completed, the adjacent weight pieces may rotate along the cylinder due to shaking and vibration, thus releasing the clamped combination and reducing the stability. However, when using a polygonal positioning rod, although there will be no problem of the weight piece rotating along the positioning rod and the clamping being released, all the weight pieces need to be rotated and clamped together and then inserted onto the polygonal positioning rod together, which is troublesome and time-consuming. In the arc-shaped guide groove of the present invention, two annular spring rings are provided. The two annular spring rings are respectively sleeved on two rings. One end of the annular spring ring abuts against the abutting plate, and the other end of the annular spring ring abuts against the side surface of the slider. When the weight piece bodies are stacked, the connecting member of the weight piece body located above is clamped inside the connecting slide rail of the weight piece body located below. Through repeated operations, multiple weight piece bodies can be connected into a whole, improving the overall stability of the connected weight piece bodies. When installing the weight piece bodies on a non-cylindrical positioning rod, the weight piece bodies can be lowered and fixed one by one, without the need to splice all the weight piece bodies into a whole and then lower them along the direction of the positioning rod, improving the convenience and installation efficiency when installing the weight piece bodies. When replacing and disassembling, the manual push block can also be used to solve the clamping of a single weight piece body and disassemble them one by one, making the combination disassembly and assembly convenient. When installing the weight piece bodies on a polygonal positioning rod, they can be placed one by one and there will be no problem of loosening and shaking after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the connection state of the present invention;

[0023] Figure 2 is a schematic structural diagram of the weight piece body of the present invention;

[0024] Figure 3 is a schematic structural diagram of the bottom of the weight piece body of the present invention;

[0025] Figure 4 is a schematic bottom-up view of the bottom structure of the present invention;

[0026] Figure 5 is a schematic structural diagram of the weight piece body of the present invention;

[0027] Figure 6 is a schematic side view of the weight piece body of the present invention;

[0028] Figure 7 is a schematic front view of the connection state of the present invention.

[0029] In the figure: 1. Hammer piece body; 2. Square groove; 3. Connecting rod installation groove; 4. Top ring groove; 5. Insertion slot; 6. Side sliding groove; 7. Bottom ring groove; 8. Connecting piece; 9. Connecting piece; 10. Inner sliding groove; 11. Connecting rod; 12. Manual push block; 13. Slide block; 14. Ring; 15. Ring-shaped spring ring; 16. Bracing plate; 17. Arc-shaped guide groove; 18. Connecting slide rail. Specific implementation manner

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In order to solve the technical problem that in the prior art, when assembling and installing hammer pieces, a cylindrical or polygonal positioning rod is often selected for connection and installation. In order to improve the stability between adjacent hammer pieces, a clamping method is often selected to clamp and combine the upper and lower hammer pieces. However, when using a cylindrical positioning rod, after the installation is completed, the adjacent hammer pieces may rotate along the cylindrical shape due to shaking and vibration, thereby releasing the clamping combination and reducing the stability. However, when using a polygonal positioning rod, although there will be no problem that the hammer piece rotates along the positioning rod to release the clamping, all the hammer pieces need to be rotated and clamped together and then inserted onto the polygonal positioning rod together, which is troublesome and time-consuming. Please refer to Figure 1-7 The present invention provides the following technical solutions:

[0032] A combined hammer piece includes a hammer piece body 1. A connecting rod installation groove 3 is opened in the middle of the top surface of the hammer piece body 1. The connecting rod installation groove 3 communicates from the top surface of the hammer piece body 1 to the bottom surface of the hammer piece body 1. Square grooves 2 are provided on the top surface of the hammer piece body 1. There are two square grooves 2, and the two square grooves 2 are symmetrically arranged and respectively opened on both sides of the hammer piece body 1. A top ring groove 4 is opened on the top surface of the hammer piece body 1, and a bottom ring groove 7 is opened on the bottom surface of the hammer piece body 1. A side sliding groove 6 is circumferentially opened on the side surface of the hammer piece body 1.

[0033] The top ring groove 4 is integrally arranged in a ring shape, and a slot 5 is formed in the top ring groove 4. The bottom ring groove 7 is integrally arranged in a ring shape, and the top ring groove 4 and the bottom ring groove 7 have the same size and vertical position. An arc-shaped guide groove 17 and a connecting slide rail 18 are formed inside the weight piece body 1. The arc-shaped guide groove 17 is arranged below the connecting slide rail 18. The arc-shaped guide groove 17 and the connecting slide rail 18 are arranged at a non-connected interval, and the inner diameter size of the arc-shaped guide groove 17 is the same as the inner diameter size of the connecting slide rail 18. The connecting slide rail 18 is arranged below the top ring groove 4, and the connecting slide rail 18 is communicated with the top ring groove 4. The connecting slide rail 18 is communicated with the outside of the weight piece body 1 through the top ring groove 4. The width size of the slot 5 is the same as the width size of the connecting slide rail 18.

[0034] The arc-shaped guide groove 17 is arranged above the bottom ring groove 7, and the arc-shaped guide groove 17 is communicated with the bottom ring groove 7. The arc-shaped guide groove 17 is communicated with the outside of the weight piece body 1 through the bottom ring groove 7. Two abutting plates 16 are arranged inside the arc-shaped guide groove 17. The two abutting plates 16 are symmetrical about the central axis of the weight piece body 1. The two abutting plates 16 divide the arc-shaped guide groove 17 into two identical and symmetrical semi-circular arc guide grooves. Ring rings 14 are arranged inside the two semi-circular arc guide grooves. The two ends of the ring ring 14 are respectively fixedly connected to the two abutting plates 16. Sliders 13 are arranged inside the two semi-circular arc guide grooves. A sliding hole is formed inside the slider 13. The inner diameter size of the sliding hole matches the size of the ring ring 14. The slider 13 is slidably connected to the ring ring 14 through the sliding hole. Two annular spring rings 15 are arranged inside the arc-shaped guide groove 17. The two annular spring rings 15 are respectively sleeved on the two ring rings 14. One end of the annular spring ring 15 abuts against the abutting plate 16, and the other end of the annular spring ring 15 abuts against the side surface of the slider 13.

[0035] Specifically, the slider 13 is slidably arranged on the ring ring 14 so that it can drive other components to perform circular motion by sliding. At the same time, the arrangement of the annular spring ring 15 enables the slider 13 to be automatically driven to reset after the slider 13 moves, and can prevent the slider 13 from sliding randomly on the ring ring 14. The two symmetrically arranged semi-circular arc guide grooves enable the staff to directly operate the two sliders 13 synchronously with both hands.

[0036] The horizontal height position of the slider 13 is the same as the position of the side chute 6. An inner chute 10 is formed inside the side chute 6. The side chute 6 is communicated with the arc-shaped guide groove 17 through the inner chute 10. A connecting rod 11 is arranged on one side of the slider 13 close to the inner chute 10. The connecting rod 11 is arranged horizontally. The connecting rod 11 is slidably arranged inside the inner chute 10. A manual push block 12 is arranged at one end of the connecting rod 11 away from the slider 13. The size of the manual push block 12 matches the side chute 6. The manual push block 12 is slidably arranged inside the side chute 6.

[0037] Specifically, the manual push block 12 is connected to the slider 13 inside the arc-shaped guide groove 17 through the connecting rod 11, so that the sliding position of the slider 13 can be adjusted by using the manual push block 12. The staff only needs to hold the weight piece body 1 with both hands and use their fingers to move the manual push block 12 in two directions respectively, then the manual push block 12 can drive the slider 13 to move along the direction of the ring 14 through the connecting rod 11, thereby adjusting the slider 13.

[0038] A connecting piece 9 is arranged at the bottom of the slider 13. The thickness dimension of the connecting piece 9 matches the width dimension of the bottom ring groove 7. The connecting piece 9 is slidably arranged inside the bottom ring groove 7. A connecting member 8 is arranged at one end of the connecting piece 9 away from the slider 13. The shape and dimension of the connecting member 8 are the same as those of the slider 13. The connecting member 8 is arranged below the weight piece body 1. The slider 13, the connecting piece 9 and the connecting member 8 are integrally formed. The dimension of the connecting member 8 matches the slot 5. When the weight piece bodies 1 are stacked, the connecting member 8 of the weight piece body 1 located above is clamped inside the connecting slide rail 18 of the weight piece body 1 located below.

[0039] Specifically, when the staff slides the position of the slider 13 in the circumferential direction, since the slider 13, the connecting piece 9 and the connecting member 8 are integrally formed, the slider 13 can drive the connecting member 8 to move together when moving. When the slider 13 drives the connecting member 8 to move to the position of the slot 5, affected by gravity, the weight piece body 1 drops, so that the connecting member 8 passes through the slot 5 and presses into the inside of the connecting slide rail 18. Then the staff releases the manual push block 12, and the slider 13 can leave the position of the slot 5 and reset under the action of the annular spring ring 15, completing the clamping between two adjacent weight piece bodies 1 up and down.

[0040] Specifically, multiple weight piece bodies 1 can be connected into a whole through repeated operations, improving the overall stability of the connected weight piece bodies 1. When installing the weight piece bodies 1 on a non-cylindrical positioning rod, the weight piece bodies 1 can be lowered and fixed one by one in sequence, without having to splice all the weight piece bodies 1 into a whole and then lower them along the direction of the positioning rod, improving the convenience and installation efficiency when installing the weight piece bodies 1. When replacing and disassembling, the manual push block 12 can also be used to solve the clamping of a single weight piece body 1 and disassemble them one by one, and the combined disassembly and assembly are convenient. When installing the weight piece bodies 1 on a polygonal positioning rod, they can be put in one by one and there will be no problem of loosening and shaking after installation.

[0041] In order to better show the installation process of the combined weight piece, this embodiment now proposes an installation method for the combined weight piece, including the following steps:

[0042] Step 1: Insert the bottom weight hammer body 1 into the positioning rod through the connecting rod installation groove 3, and slide the weight hammer body 1 from top to bottom to the bottom of the positioning rod;

[0043] Step 2: Insert another weight piece body 1 on the positioning rod through the connecting rod installation groove 3 and slide it from top to bottom to the top of the bottom weight piece body 1;

[0044] Step 3: Hold the weight piece body 1 with both hands, and use your fingers to move the manual push block 12. The manual push block 12 drives the slider 13 to move along the direction of the ring 14 through the connecting rod 11. When the connecting member 8 moves to the position of the slot 5, press the handheld weight piece body 1 downward, and press the connecting member 8 to the inside of the connecting slide rail 18 through the slot 5. Then release the manual push block 12. The slider 13 leaves the position of the slot 5 and resets under the action of the annular spring ring 15, completing the clamping between the upper and lower adjacent weight piece bodies 1;

[0045] Step 4: Repeat steps 2 and 3 until all the weight pieces 1 are installed on the positioning rods.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A combined weight piece, comprising a weight piece body (1), characterized in that: a connecting rod installation groove (3) is formed in the middle of the top surface of the weight piece body (1), and the connecting rod installation groove (3) communicates from the top surface of the weight piece body (1) to the bottom surface of the weight piece body (1). A square groove (2) is provided on the top surface of the weight piece body (1). There are two square grooves (2), and the two square grooves (2) are symmetrically arranged and respectively opened on both sides of the weight piece body (1). A top ring groove (4) is formed on the top surface of the weight piece body (1), and a bottom ring groove (7) is formed on the bottom surface of the weight piece body (1). A side sliding groove (6) is formed around the side surface of the weight piece body (1); an arc-shaped guide groove (17) and a connecting slide rail (18) are formed inside the weight piece body (1). The arc-shaped guide groove (17) is arranged below the connecting slide rail (18). The arc-shaped guide groove (17) and the connecting slide rail (18) are arranged at a non-connected interval, and the inner diameter dimension of the arc-shaped guide groove (17) is the same as the inner diameter dimension of the connecting slide rail (18); the arc-shaped guide groove (17) is arranged above the bottom ring groove (7), and the arc-shaped guide groove (17) communicates with the bottom ring groove (7). The arc-shaped guide groove (17) communicates with the outside of the weight piece body (1) through the bottom ring groove (7). Two abutting plates (16) are arranged inside the arc-shaped guide groove (17). The two abutting plates (16) are symmetric about the central axis of the weight piece body (1). The two abutting plates (16) divide the arc-shaped guide groove (17) into two identical and symmetrical semi-circular arc guide grooves. Ring circles (14) are arranged inside the two semi-circular arc guide grooves. The two ends of the ring circle (14) are respectively fixedly connected to the two abutting plates (16). Sliders (13) are arranged inside the two semi-circular arc guide grooves. A sliding hole is formed inside the slider (13). The inner diameter dimension of the sliding hole matches the dimension of the ring circle (14). The slider (13) is slidably connected to the ring circle (14) through the sliding hole. Two annular spring rings (15) are arranged inside the arc-shaped guide groove (17). The two annular spring rings (15) are respectively sleeved on the two ring circles (14). One end of the annular spring ring (15) abuts against the abutting plate (16), and the other end of the annular spring ring (15) abuts against the side surface of the slider (13); the horizontal height position of the slider (13) is the same as the position of the side sliding groove (6). An inner sliding groove (10) is formed inside the side sliding groove (6). The side sliding groove (6) communicates with the arc-shaped guide groove (17) through the inner sliding groove (10). A connecting rod (11) is arranged on the surface of the slider (13) close to the inner sliding groove (10). The connecting rod (11) is horizontally arranged. The connecting rod (11) is slidably arranged inside the inner sliding groove (10). A manual push block (12) is arranged at the end of the connecting rod (11) away from the slider (13). The size of the manual push block (12) matches the side sliding groove (6). The manual push block (12) is slidably arranged inside the side sliding groove (6).

2. A combined weight piece according to claim 1, characterized in that: The top ring groove (4) is arranged in an annular shape as a whole, a slot (5) is provided on the top ring groove (4), and the bottom ring groove (7) is arranged in an annular shape as a whole, and the top ring groove (4) and the bottom ring groove (7) have the same size and vertical position.

3. A combined weight piece as claimed in claim 1, Features: The connecting slide rail (18) is arranged below the top ring groove (4), the connecting slide rail (18) is connected to the top ring groove (4), the connecting slide rail (18) is connected to the outside of the weight hammer piece body (1) through the top ring groove (4), and the width dimension of the slot (5) is the same as the width dimension of the connecting slide rail (18).

4. A combined weight piece as claimed in claim 1, Features: A connecting piece (9) is provided at the bottom of the slider (13). The thickness of the connecting piece (9) matches the width of the bottom ring groove (7). The connecting piece (9) is slidably arranged inside the bottom ring groove (7). A connecting piece (8) is provided at one end of the connecting piece (9) away from the slider (13). The shape and size of the connecting piece (8) are the same as those of the slider (13). The connecting piece (8) is arranged below the weight hammer body (1). The slider (13), the connecting piece (9) and the connecting piece (8) are integrally formed. The size of the connecting piece (8) matches the slot (5).

5. A combined weight piece as claimed in claim 1, Features: When the weight piece bodies (1) are stacked, the connecting piece (8) of the weight piece body (1) located at the top is clamped inside the connecting slide rail (18) of the weight piece body (1) located at the bottom.

6. A method for installing a combined weight piece according to any one of claims 1 to 5, Features: The steps include: Step 1: insert the bottom weight hammer body (1) into the positioning rod through the connecting rod installation groove (3), and slide the weight hammer body (1) from top to bottom to the bottom of the positioning rod; Step 2: Insert another weight piece body (1) onto the positioning rod through the connecting rod mounting groove (3) and slide it from top to bottom to the top of the weight piece body (1) at the bottom; Step 3: Hold the weight piece body (1) with both hands and use the fingers to move the manual push block (12), which drives the slider (13) to move along the direction of the ring (14) through the connecting rod (11). When the connecting piece (8) moves to the position of the slot (5), press the handheld weight piece body (1) downward, and press the connecting piece (8) through the slot (5) to the inside of the connecting slide rail (18), then release the manual push block (12), and the slider (13) leaves the slot (5) and resets under the action of the annular spring ring (15), completing the clamping connection between the upper and lower adjacent weight piece bodies (1); Step 4: Repeat steps 2 and 3 until all the weight pieces (1) are installed on the positioning rods.

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