Semi-automatic pin shaft

Abstract

The utility model discloses a semi-automatic pin shaft which comprises a magnet, a semi-opening pin clamp, a flaring clamping block and a flaring switch assembly. The semi-opening pin clamp comprises a pair of semi-cylindrical unit pin clamps, and one sides of the pair of unit pin clamps are rotatably connected through a rotating shaft; the pair of magnets are respectively embedded on the pair of unit pin clamps and are oppositely arranged, so that the pair of unit pin clamps are attracted and connected through the pair of magnets to form a closed pin shaft structure, and the closed pin shaft structure can be inserted into a connecting part of a construction machine; the flaring clamping block is movably clamped between the other sides, away from the rotating shaft, of the pair of unit pin clamps through the flaring switch assembly, so that the pair of unit pin clamps can be rotationally opened through the flaring clamping block to form an opening pin shaft structure, and the opening pin shaft structure can be clamped in the connecting part of the construction machine in a matched mode. The utility model relates to the technical field of construction machinery engineering, and can solve the problems that in the prior art, a pin shaft is tedious to disassemble and assemble, and parts are easy to lose.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery engineering, in particular to a semi-automatic pin shaft. Background Art

[0002] After the construction machinery enters the site, it needs to be assembled, among which there are many rotating parts that need to be connected by pins. The pins of the prior art include a pin with a hole at the bottom and a cotter pin, which need to be used in combination. The pin is installed when the cotter pin is closed, and the cotter pin is opened when in use to realize the connection and synchronization / relative rotation functions between the parts. Since the disassembly and assembly operation of the pins of the prior art is relatively cumbersome, and the pin with a hole at the bottom and the cotter pin are split structures, parts are easy to lose. In order to facilitate disassembly and assembly, construction workers often use ordinary iron wire instead of pins for assembly, which poses a great safety hazard. Therefore, it is necessary to provide a semi-automatic pin that can solve the problems of cumbersome disassembly and assembly of the pins and easy loss of parts in the prior art. Summary of the invention

[0003] The utility model aims to provide a semi-automatic pin shaft, which can solve the problems of complicated disassembly and assembly of the pin shaft and easy loss of parts in the prior art.

[0004] The utility model is achieved in this way:

[0005] A semi-automatic pin shaft comprises a magnet, a semi-open pin clamp, a flaring clamp block and a flaring switch assembly; the semi-open pin clamp comprises a pair of semi-cylindrical unit pin clamps, one side of the pair of unit pin clamps being rotatably connected via a rotating shaft; a pair of magnets are respectively embedded in the pair of unit pin clamps and arranged relatively to each other, so that the pair of unit pin clamps are adsorbed and connected via a pair of magnets to form a closed pin shaft structure, and the closed pin shaft structure can be inserted into the connecting part of a construction machine; the flaring clamp block is movably clamped between the other side of the pair of unit pin clamps away from the rotating shaft via the flaring switch assembly, so that the pair of unit pin clamps can be rotated open via the flaring clamp block to form an open pin shaft structure, and the open pin shaft structure can be matched and clamped into the connecting part of the construction machine.

[0006] The pair of unit pin clamps are each formed with a first slot at the end portion of the other side away from the rotating shaft, and a second slot is each formed in the other side of the pair of unit pin clamps away from the rotating shaft. The second slot is connected to the first slot, and the width of the second slot is greater than the width of the first slot, so that when the expansion block is fully engaged in the pair of first slots and the pair of second slots, the pair of unit pin clamps form a closed pin shaft structure, and when the expansion block is partially engaged in the pair of first slots, the pair of unit pin clamps form an open pin shaft structure.

[0007] The expansion block includes a limit block and a guide block. The guide block is an isosceles triangle structure. The bottom edge of the guide block is connected to the expansion switch assembly. The limit block is arranged at the top corner of the guide block. The limit block can be matched and connected in a pair of first slots, and the guide block can be matched and connected in a pair of second slots and can be slidably connected in a pair of first slots.

[0008] The flared switch assembly includes a connecting rod and a switch pull rod; a pair of unit pin cards are each formed with a connecting rod groove in the other side away from the rotating shaft, and the connecting rod groove is connected to the second groove; one end of the connecting rod is located in the second groove and connected to the bottom edge of the guide block, and the other end of the connecting rod passes through the connecting rod groove and passes through a pair of unit pin cards and is connected to the switch pull rod.

[0009] A limit plate is formed at one end of the rotating shaft away from the magnet, and one end of a pair of unit pins away from the magnet is in sliding contact with one surface of the limit plate, and the diameter of the limit plate is larger than the diameter of the pin shaft structure; the other end of the connecting rod passes through the limit plate, so that the switch pull rod is located outside the other surface of the limit plate.

[0010] A spring connecting rod is arranged on the other surface of the limit plate, and the switch pull rod is elastically connected between the spring connecting rod and the connecting rod through a spring.

[0011] The spring connecting rod is in an L-shaped structure, one end of the spring connecting rod is coaxially connected to the other surface of the limit plate, and the other end of the spring connecting rod is parallel to the limit plate, so that the switch pull rod can be elastically located between the other end of the spring connecting rod and the other surface of the limit plate through the spring.

[0012] The spring is coaxially arranged with the expansion block and the connecting rod.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model is provided with a magnet, a semi-open pin card, a flaring card block and a flaring switch assembly. Under the action of external force and magnetic attraction, the limit block and the guide block are received into a pair of first notches and a second notch through the flaring switch assembly, so that the pin shaft structure is in a manually closed state; at the same time, the guide block is clamped in a pair of first notches through the flaring switch assembly, and a pair of unit pin cards are propped apart and separated, and the pin shaft structure is in an automatic open state. The semi-automatic installation method of the pin shaft structure can greatly improve the convenience of disassembly and assembly of the pin shaft and the installation and connection efficiency of the construction machinery, and also reduce the difficulty of installing the pin shaft, solve the problem of complicated disassembly and assembly of the pin shaft in the prior art, and eliminate the safety hazards of using ordinary iron wire to replace the pin shaft.

[0015] 2. The utility model is provided with a semi-split pin card, a flared card block and a flared switch assembly. The flared card block can be movably connected in the semi-split pin card through the flared switch assembly to form an embedded integrated structure. Compared with the split structure of the pin shaft and the cotter pin of the traditional pin shaft, the probability of parts loss can be greatly reduced, which is beneficial to saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the semi-automatic pin shaft of the utility model;

[0017] Figure 2 yes Figure 1 A partial enlarged view of

[0018] Figure 3 It is a three-dimensional diagram of the semi-automatic pin shaft of the utility model (open pin shaft structure);

[0019] Figure 4 It is a three-dimensional diagram of the semi-automatic pin of the utility model (closed pin structure);

[0020] Figure 5 This is a schematic diagram before installation of the closed pin structure in the semi-automatic pin of the utility model;

[0021] Figure 6 It is a schematic diagram of the installation of the split pin structure in the semi-automatic pin of the utility model.

[0022] In the figure, 1 is a magnet; 2 is a half-open pin card; 201 is a rotating shaft; 202 is a first notch, 203 is a second notch, 204 is a connecting rod slot; 205 is a limit plate; 3 is an expansion card block; 301 is a limit block; 302 is a guide block; 4 is a connecting rod; 5 is a switch pull rod; 6 is a spring; 7 is a spring connecting rod; 8 is a construction machinery. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Please see attached Figure 1 To Attachment Figure 6A semi-automatic pin shaft comprises a magnet 1, a semi-open pin clamp 2, a flaring block 3 and a flaring switch assembly; the semi-open pin clamp 2 comprises a pair of semi-cylindrical unit pin clamps, one side of the pair of unit pin clamps is rotatably connected through a rotating shaft 201; a pair of magnets 1 are respectively embedded in a pair of unit pin clamps and arranged relatively, so that a pair of unit pin clamps are adsorbed and connected through a pair of magnets 1 to form a closed pin shaft structure, and the closed pin shaft structure can be inserted into the connecting part of a construction machinery 8; the flaring block 3 is movably connected between the other side of a pair of unit pin clamps away from the rotating shaft 201 through the flaring switch assembly, so that a pair of unit pin clamps can be rotated open through the flaring block 3 to form an open pin shaft structure, and the open pin shaft structure can be matched and connected in the connecting part of the construction machinery 8.

[0025] A pair of semi-cylindrical unit pin clamps are rotatably connected through a rotating shaft 201, and the expansion clamp block 3 is movably connected between a pair of unit pin clamps through an expansion switch assembly, so that the pin shaft and the cotter pin form an integrated semi-automatic pin shaft, which largely solves the problem of easy loss of split structural parts.

[0026] At the same time, the semi-open pin clamp 2 is rotated to open or close under the control of the expanding switch assembly through the expanding clamp block 3, and flexibly switches between the open state of the open pin shaft structure and the closed state of the closed pin shaft structure, thereby improving the convenience of disassembly and assembly of the semi-automatic pin shaft, effectively reducing the problem of construction personnel using wire instead of pin shaft installation for the sake of convenience, and eliminating safety hazards.

[0027] Please see attached Figure 2 The pair of unit pin clamps are both formed with a first slot 202 at the other end portion away from the rotating shaft 201, and a second slot 203 is formed in the other side of the pair of unit pin clamps away from the rotating shaft 201. The second slot 203 is connected to the first slot 202, and the width of the second slot 203 is greater than the width of the first slot 202, so that when the expansion block 3 is completely engaged in the pair of first slots 202 and the pair of second slots 203, the pair of unit pin clamps form a closed pin shaft structure, and when the expansion block 3 is partially engaged in the pair of first slots 202, the pair of unit pin clamps form an open pin shaft structure.

[0028] Preferably, the width of the pair of second notches 203 is consistent with the maximum width of the expansion card block 3, and the height of the second notch 203 and the first notch 202 is consistent with the height of the expansion card block 3, so that the expansion card block 3 can be just clamped in the pair of first notches 202 and the pair of second notches 203 when the pair of unit pins are closed, without affecting the closed state of the half-open pin card 2. At the same time, under the control of the expansion switch assembly, when the expansion card block 3 is pushed out of the first notch 202, the pair of unit pins can be separated by the pushing of the expansion card block 3, so as to achieve the purpose of expansion and put the half-open pin card 2 in an open state. The opening and closing state conversion operation of the pin shaft structure is convenient, thereby improving the installation convenience and efficiency of the pin shaft structure.

[0029] Please see attached Figure 2 The expansion block 3 includes a limit block 301 and a guide block 302. The guide block 302 is an isosceles triangle structure. The bottom side of the guide block 302 is connected to the expansion switch assembly. The limit block 301 is arranged at the top corner of the guide block 302. The limit block 301 can be matched and connected in a pair of first slots 202, and the guide block 302 can be matched and connected in a pair of second slots 203 and can be slidably connected in a pair of first slots 202.

[0030] Preferably, the first notch 202 and the second notch 203 are both rectangular grooves, and the limit block 301 is a rectangular block. The bottom length of the guide block 302 is consistent with the sum of the widths of the pair of second notches 203, and the height of the guide block 302 is consistent with the height of the second notch 203; the width of the limit block 301 is consistent with the sum of the widths of the pair of first notches 202, and the height of the limit block 301 is consistent with the height of the first notch 202. The limit block 301 and the guide block 302 can be integrally formed.

[0031] When the limit block 301 is matched and clamped in the pair of first notches 202, and the guide block 302 is matched and clamped in the pair of second notches 203, the pair of unit pins rotate and close to form a closed pin structure. When the limit block 301 and the guide block 302 are pushed out of the first notches 202 and the second notches 203 by the expansion switch assembly, the two hypotenuses of the isosceles triangle guide block 302 can slide in contact with the pair of second notches 203, play a guiding role, and open the pair of unit pins, so that they rotate and separate around the rotating shaft 201, forming an open pin structure, so that the pin structure can stably switch between the closed state and the open state.

[0032] Please see attached Figure 1 To Attachment Figure 4The flared switch assembly includes a connecting rod 4 and a switch pull rod 5; a pair of unit pin cards are formed with a connecting rod groove 204 on the other side away from the rotating shaft 201, and the connecting rod groove 204 is connected to the second groove 203; one end of the connecting rod 4 is located in the second groove 203 and connected to the bottom edge of the guide block 302, and the other end of the connecting rod 4 passes through the connecting rod groove 204 and passes through a pair of unit pin cards and is connected to the switch pull rod 5.

[0033] The guide block 302, the connecting rod 4 and the switch pull rod 5 are connected in a fixed manner to ensure that the guide block 302 can be driven to move synchronously through the connecting rod 4 when the switch pull rod 5 is pulled. The length of the connecting rod 4 can be adaptively adjusted according to the length of the semi-split pin card 2. The connecting rod 4 extends to the outside of the semi-split pin card 2, and the switch pull rod 5 is placed outside the construction machine 8, which is convenient for construction personnel to control the state of the pin structure.

[0034] Please see attached Figure 1 , Attachment Figure 3 and attached Figure 4 The end of the rotating shaft 201 away from the magnet 1 forms a limiting plate 205, and the end of a pair of unit pins away from the magnet 1 is in sliding contact with one surface of the limiting plate 205, and the diameter of the limiting plate 205 is larger than the diameter of the pin structure; the other end of the connecting rod 4 passes through the limiting plate 205, so that the switch rod 5 is located outside the other surface of the limiting plate 205.

[0035] Preferably, the limiting plate 205 can be a circular plate structure, and a through hole slightly larger than the cross-sectional size of the connecting rod 4 is reserved on the limiting plate 205 to facilitate the insertion and movement of the connecting rod 4. The limiting plate 205 is used to provide guidance and limit for the movement of the connecting rod 4, so that the connecting rod 4 drives the movement stability and controllability of the guide block 302.

[0036] Please see attached Figure 1 , Attachment Figure 3 and attached Figure 4 A spring connecting rod 7 is provided on the other surface of the limit plate 205, and the switch pull rod 5 is elastically connected between the spring connecting rod 7 and the connecting rod 4 through a spring 6.

[0037] The spring 6 is always in a compressed state, and the elastic coefficient and compression degree of the spring 6 can be adaptively adjusted according to actual installation requirements, so that the elastic force generated by the spring 6 can act on the guide block 302 through the connecting rod 4 and the switch pull rod 5, so that the guide block 302 props a pair of unit pins open to an open state, thereby ensuring the normal connection and use function of the connection parts of the construction machinery 8.

[0038] By manually pulling the switch rod 5 along the extension direction of the spring 6, the compression degree of the spring 6 can be increased, and by cooperating with the magnetic attraction of a pair of magnets 1, a pair of unit pins can be rotated and closed to a cylindrical structure, thereby facilitating the installation of the closed pin shaft structure to the part of the construction machinery 8 that needs to be connected.

[0039] After the switch rod 5 is released, under the elastic force of the spring 6, the switch rod 5 and the connecting rod 4 act on the guide block 302 in turn, pushing the guide block 302 out of the first notch 202, and overcoming the magnetic attraction of the pair of magnets 1 to open the pair of unit pins. The spring 6 is telescopically installed between the spring connecting rod 7 and the switch rod 5, which can be manually closed and automatically opened, has the function of semi-automatic installation, and improves the installation convenience of the pin structure.

[0040] Please see attached Figure 1 , Attachment Figure 3 and attached Figure 4 The spring connecting rod 7 is in an L-shaped structure, one end of the spring connecting rod 7 is coaxially connected to the other surface of the limit plate 205, and the other end of the spring connecting rod 7 is parallel to the limit plate 205, so that the switch pull rod 5 can be elastically located between the other end of the spring connecting rod 7 and the other surface of the limit plate 205 through the spring 6.

[0041] The L-shaped spring connecting rod 7 transmits the reaction force of the spring 6 to the limit plate 205 to ensure that the elastic force of the spring 6 can be stably transmitted to the switch pull rod 5, and the force of the entire pin structure is smooth and stable.

[0042] The spring 6 is coaxially arranged with the expansion block 3 and the connecting rod 4 to facilitate the transmission of force.

[0043] Please see attached Figure 1 To Attachment Figure 6 , the installation method of the utility model is:

[0044] During the mechanical assembly process at the construction site, a node connected by a pin shaft is used to pull the switch pull rod 5 toward the other end of the spring connecting rod 7, and the compression degree of the spring 6 increases; under the pulling of the connecting rod 4, the guide block 302 of the expansion block 3 is just embedded in the second slot 203, and the limit block 301 is just embedded in the first slot 202. Under the adsorption force of a pair of magnets 1, a pair of unit pins rotate around the rotating shaft 201 and fit together to form a cylindrical pin shaft structure, that is, the pin shaft structure is in a closed state.

[0045] Insert the pin structure in the closed state into the part of the construction machine 8 that needs to be connected, and the limit of the plug-in connection can be achieved by the abutment of the limit plate 205 against the connection part, as shown in the attached Figure 5 shown.

[0046] The switch rod 5 is released. Under the elastic force of the spring 6, the switch rod 5 and the connecting rod 4 are pushed out, so that the limit block 301 is disengaged from the first notch 202, and the guide block 302 gradually disengages from the second notch 203 and is inserted into the first notch 202. Under the guidance of the two oblique edges of the guide block 302, a pair of unit pins are pushed to both sides to rotate around the rotating shaft 201 to open, forming an open pin shaft structure, so that it is clamped in the connecting part of the construction machinery 8, as shown in the attached figure. Figure 6 shown.

[0047] Under the elastic force of the spring 6, the bottom edge of the guide block 302 is always in contact with the first notch 202, thereby ensuring that the pin structure is in an open state and ensuring connection reliability.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A semi-automatic pin, characterized by: The invention comprises a magnet (1), a semi-open pin clamp (2), an expanded clamp block (3) and an expanded switch assembly; the semi-open pin clamp (2) comprises a pair of semi-cylindrical unit pin clamps, one side of the pair of unit pin clamps being rotatably connected via a rotating shaft (201); a pair of magnets (1) are respectively embedded in the pair of unit pin clamps and arranged opposite to each other, so that the pair of unit pin clamps are adsorbed and connected via the pair of magnets (1) to form a closed pin shaft structure, and the closed pin shaft structure can be inserted into the connection part of the construction machinery (8); the expanded clamp block (3) is movably clamped between the other side of the pair of unit pin clamps away from the rotating shaft (201) via the expanded switch assembly, so that the pair of unit pin clamps can be rotated open via the expanded clamp block (3) to form an open pin shaft structure, and the open pin shaft structure can be matched and clamped into the connection part of the construction machinery (8).

2. The semi-automatic pin according to claim 1 is characterized in that: The pair of unit pin clamps are each formed with a first notch (202) at the other end of the side away from the rotating shaft (201), and a second notch (203) is each formed in the other side of the pair of unit pin clamps away from the rotating shaft (201). The second notch (203) is connected to the first notch (202), and the width of the second notch (203) is greater than the width of the first notch (202), so that when the expansion block (3) is completely engaged in the pair of first notches (202) and the pair of second notches (203), the pair of unit pin clamps form a closed pin shaft structure, and when the expansion block (3) is partially engaged in the pair of first notches (202), the pair of unit pin clamps form an open pin shaft structure.

3. The semi-automatic pin according to claim 2 is characterized in that: The expansion block (3) comprises a limit block (301) and a guide block (302); the guide block (302) is an isosceles triangle structure; the bottom edge of the guide block (302) is connected to the expansion switch assembly; the limit block (301) is arranged at the top corner of the guide block (302); the limit block (301) can be matched and clamped in a pair of first notches (202); the guide block (302) can be matched and clamped in a pair of second notches (203) and can be slidably clamped in a pair of first notches (202).

4. The semi-automatic pin according to claim 3 is characterized in that: The flared switch assembly comprises a connecting rod (4) and a switch pull rod (5); a connecting rod groove (204) is formed in the other side of a pair of unit pin clamps away from the rotating shaft (201), and the connecting rod groove (204) is connected to the second groove (203); one end of the connecting rod (4) is located in the second groove (203) and is connected to the bottom edge of the guide block (302), and the other end of the connecting rod (4) passes through the pair of unit pin clamps through the connecting rod groove (204) and is connected to the switch pull rod (5).

5. The semi-automatic pin according to claim 4 is characterized in that: The end of the rotating shaft (201) away from the magnet (1) forms a limit plate (205), and the ends of a pair of unit pins away from the magnet (1) are in sliding contact with one surface of the limit plate (205), and the diameter of the limit plate (205) is larger than the diameter of the pin structure; the other end of the connecting rod (4) passes through the limit plate (205), so that the switch pull rod (5) is located outside the other surface of the limit plate (205).

6. The semi-automatic pin according to claim 5 is characterized in that: A spring connecting rod (7) is provided on the other surface of the limit plate (205), and the switch pull rod (5) is elastically connected between the spring connecting rod (7) and the connecting rod (4) via a spring (6).

7. The semi-automatic pin according to claim 6 is characterized in that: The spring connecting rod (7) is in an L-shaped structure, one end of the spring connecting rod (7) is coaxially connected to the other surface of the limit plate (205), and the other end of the spring connecting rod (7) is parallel to the limit plate (205), so that the switch pull rod (5) can be elastically located between the other end of the spring connecting rod (7) and the other surface of the limit plate (205) through the spring (6).

8. The semi-automatic pin according to claim 6 or 7, characterized in that: The spring (6) is coaxially arranged with the expansion block (3) and the connecting rod (4).

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