Connecting rod balance hoisting device

Abstract

The invention relates to the technical field of connecting rod machining, and particularly discloses a connecting rod balance hoisting device which comprises a balance beam, a plurality of hooks are fixedly connected to the balance beam, a mounting space for mounting a connecting rod body is formed among the hooks, a positioning block is fixedly connected to the balance beam, and an extrusion rod is slidably connected to the balance beam. A locking mechanism is arranged between the extrusion rod and the positioning block and drives the extrusion rod to abut against the connecting rod body. The balance beam is further provided with a hook. When the connecting rod body needs to be hoisted, when the grip is pressed downwards, the locking valve pushes the ejector rod to penetrate through the guide hole of the balance beam downwards to be pressed on the rod body of the connecting rod body, the effect of fixing the connecting rod body is achieved, and it is guaranteed that the connecting rod body does not slide or fall off in the hoisting process. Horizontal balance of the connecting rod body in the hoisting process is guaranteed, the situation that the connecting rod body falls off and is damaged due to inclination of the connecting rod body under the influence of factors such as weight is avoided, and the practicability of the hoisting device is improved to a great extent.

Description

Technical Field

[0001] The invention relates to the technical field of connecting rod processing, in particular to a connecting rod balancing hoisting device. Background Art

[0002] The connecting rod group consists of a connecting rod body, a connecting rod big head cover, a connecting rod small head bushing, a connecting rod big head bearing and a connecting rod bolt. The connecting rod group bears the gas force transmitted from the piston pin, its own swing and the reciprocating inertia force of the piston group. The magnitude and direction of these forces are periodically changed. Therefore, the connecting rod is subjected to alternating loads such as compression and tension. The connecting rod must have sufficient fatigue strength and structural stiffness. Insufficient fatigue strength often causes the connecting rod body or connecting rod bolt to break, and then a major accident of whole machine damage occurs. If the stiffness is insufficient, it will cause the rod body to bend and deform and the connecting rod big head to be out of round, resulting in eccentric wear of the piston, cylinder, bearing and crank pin. The connecting rod body consists of three parts. The part connected to the piston pin is called the connecting rod small head; the part connected to the crankshaft is called the connecting rod big head, and the rod connecting the small head and the big head is called the connecting rod body. The connecting rod small head is mostly a thin-walled circular ring structure. In order to reduce the wear between the piston pin and the small head, a thin-walled bronze bushing is pressed into the small head hole.

[0003] Drill holes or mill grooves on the small head and bushing to allow the splashing oil to enter the mating surface of the lubricating bushing and the piston pin. The connecting rod is a long rod and is subjected to large forces during operation. In order to prevent it from bending and deformation, the rod must have sufficient rigidity.

[0004] For example, the Chinese patent with application number 202022409532.4, announcement number CN214003761U, and name "An auxiliary balanced lifting device" discloses an auxiliary balanced lifting device, including a connector fixedly connected to the object being lifted, the connector is detachably fixedly connected with an adjustment plate, the adjustment plate is provided with a plurality of lifting points for connecting with the connector, and the adjustment plate is fixedly connected with a lifting lug connected with the sling; the connector is fixedly connected to one of the lifting points of the adjustment plate so that the lifting lug and the center of mass of the object being lifted are coaxial. The auxiliary balanced lifting device in the above patent selects different lifting points and lifting holes to adapt to different forms of plane eccentricity to ensure the balance of the object being lifted.

[0005] Another example is a Chinese patent with application number 202121766182.5, authorization announcement number CN215326397U, and name "A balanced lifting device for engineering". The above patent discloses a balanced lifting device for engineering. Two rotating shafts are arranged on the main body of the lifting device box, and a first connecting rod is connected and installed by the rotating shafts respectively. During the lifting process, two lifting rings are used to install the lifting object. When the center of gravity of the lifting object and the pulling direction of the lifting rope are not in the same straight line, the two lifting rings are subjected to the force of the gravity of the lifting object and the component force of the crane pulling force, so that the two lifting rings are tilted and rotated with the rotating shaft. The driving device drives the driving mounting plate to move, and the position of the two first connecting rods is adjusted, so that the center of gravity of the lifting object lifted by the lifting rings at the lower ends of the two first connecting rods and the lifting rope are adjusted to be on the same gravity line, thereby achieving the effect of balancing and adjusting the lifting object.

[0006] The prior art, such as the above patent, can meet the hoisting requirements of the connecting rod to a certain extent. However, during the hoisting process of the connecting rod, due to the difference in structure and weight between the two ends of the connecting rod, the prior art, such as the above patent, whether it is a traditional single hook or a double hanging groove, will cause the connecting rod to tilt, resulting in a risk of falling or even being unable to be hoisted, which brings certain safety risks to the hoisting process and reduces production efficiency. Summary of the invention

[0007] The object of the present invention is to provide a connecting rod balancing hoisting device to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a connecting rod balancing lifting device, including a balancing beam, a plurality of hooks are fixedly connected to the balancing beam, an installation space for installing a connecting rod body is formed between the plurality of hooks, a positioning block is fixedly connected to the balancing beam, and an extrusion rod is slidably connected to the balancing beam, and a locking mechanism is arranged between the extrusion rod and the positioning block, and the locking mechanism drives the extrusion rod to abut against the connecting rod body; a hook is also arranged on the balancing beam.

[0009] Furthermore, the locking mechanism comprises a locking valve, the extrusion rod is mounted on the locking valve; and a handle is rotatably connected to the positioning block, and the handle, the positioning block and the locking valve are connected by a hinge.

[0010] Furthermore, the positioning block and the balance beam are connected by bolts.

[0011] Furthermore, a plurality of groups of extrusion rods are slidably connected to the bottom of the balance beam, and the plurality of groups of extrusion rods are connected through an installation unit; and the lifting ring is transmission-connected to the installation unit through a linkage. When the lifting ring slides upward, the linkage drives the extrusion rod to slide downward, thereby fixing the connecting rod body.

[0012] Furthermore, the lifting ring is slidably connected to the balance beam through a limiting piece; the limiting piece includes a mounting rod fixedly connected to the lifting ring, and a mounting ring is fixedly connected to the bottom of the mounting rod; and a limiting groove adapted to the mounting rod is opened on the balance beam, the mounting rod is slidably connected to the limiting groove, and a limiting ring is fixedly connected to the balance beam, and the diameter of the mounting ring is larger than the diameter of the limiting ring; a tension spring is arranged between the mounting ring and the balance beam.

[0013] Furthermore, the mounting unit comprises a mounting frame slidably connected to the inside of the balance beam, the mounting frame is fixedly connected to multiple groups of extrusion rods, multiple groups of positioning springs are arranged between the mounting frame and the balance beam; and an extension rod is fixedly connected to the mounting frame.

[0014] Furthermore, the linkage member includes a gear, a first rack is fixedly connected to the bottom of the mounting ring via an extension plate, a second rack is fixedly connected to the extension rod, and the first rack and the second rack are respectively meshed on both sides of the gear.

[0015] Furthermore, a pressure rod is slidably connected to the bottom of the push rod through an elastic member, and a transmission unit is provided between the mounting frame and the pressure rod; when the mounting frame drives multiple groups of extrusion rods to slide downward, the pressure rod is driven to slide downward through the transmission unit to fix the connecting rod body.

[0016] Furthermore, the transmission unit includes a transmission rod slidably connected to the balance beam, a force block is fixedly connected to the transmission rod, and a pressure block adapted to the force block is fixedly connected to the mounting frame, and the pressure block abuts against the force block; a pressure groove is provided on the pressure rod, a driving block is fixedly connected to the force rod, and the driving block abuts against the pressure groove; a return spring is arranged between the force block and the balance beam, and the elastic force of the return spring drives the driving block to slide out of the pressure groove.

[0017] Furthermore, the elastic member includes a mounting spring, a mounting groove is provided on the bottom of the push rod, the pressure rod is slidably connected to the push rod through the mounting groove, and the mounting spring is arranged between the push rod and the pressure rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: during the operation of the connecting rod balancing hoisting device, when the connecting rod body needs to be hoisted, when the handle is pressed down, the locking valve pushes the top rod to the lower end through the guide hole of the balance beam, and presses on the rod body of the connecting rod body, which plays a role in fixing the connecting rod body and ensures that it does not slide or fall off during the hoisting process. At the same time, when the connecting rod body is not hoisted, the external hoisting equipment hooks the lifting ring for lifting. Since the lifting ring is at one end of the balance beam, the balancing hoisting device tilts toward one end of the hook due to its own weight. When the connecting rod body is hoisted, one end of the big head hole of the connecting rod body faces the side of the lifting ring. The big head end of the connecting rod body has a large weight, and the weight on one side of the hook of the hoisting device balances the weight of the big head hole of the connecting rod body, ensuring the horizontal balance of the connecting rod body during the hoisting process, and avoiding the connecting rod body from tilting due to the influence of weight and other factors, resulting in the connecting rod body falling off and being damaged, thereby greatly improving the practicality of the hoisting device, which is suitable for wide promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the structure of the connecting rod body installation method provided by an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the structure of the locking mechanism in a closed state provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the unlocked state structure of the locking mechanism provided by an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the overall structure from another perspective provided by an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the overall structure provided for another embodiment of the present invention;

[0026] Figure 7 A schematic diagram of the internal structure of a balance beam provided by another embodiment of the present invention;

[0027] Figure 8 A schematic diagram of the structure of the linkage member installation method provided by another embodiment of the present invention;

[0028] Fig. 9A schematic diagram showing another perspective of a linkage member installation method provided by another embodiment of the present invention;

[0029] Fig.10 A schematic diagram of the internal top view of a balance beam provided by another embodiment of the present invention;

[0030] Fig.11 for Fig.10 Schematic diagram of the AA section structure along the middle edge;

[0031] Fig.12 A schematic structural diagram of a pressure rod installation method provided in another embodiment of the present invention.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. Balance beam; 2. Hook; 3. Positioning block; 4. Connecting rod body; 5. Push rod; 6. Locking valve; 7. Handle; 8. Hinge; 9. Lifting ring; 10. Extrusion rod; 11. Mounting rod; 12. Mounting ring; 13. Tension spring; 14. Mounting frame; 15. Positioning spring; 16. Extension plate; 17. First rack; 18. Gear; 19. Second rack; 20. Pressure rod; 21. Mounting spring; 22. Pressure block; 23. Transmission rod; 24. Return spring; 25. Force block; 26. Mounting groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 12 The present invention provides a technical solution: a connecting rod balancing lifting device, including a balancing beam 1, a plurality of hooks 2 are fixedly connected to the balancing beam 1, an installation space for installing a connecting rod body 4 is formed between the plurality of hooks 2, a positioning block 3 is fixedly connected to the balancing beam 1, and an extrusion rod 10 is slidably connected to the balancing beam 1, and a locking mechanism is arranged between the extrusion rod 10 and the positioning block 3, the locking mechanism drives the extrusion rod 10 to abut against the connecting rod body 4; a hook 2 is also arranged on the balancing beam 1.

[0035] Specifically, the connecting rod balancing hoisting device comprises a balancing beam 1, on which a plurality of hooks 2 are fixedly connected, wherein the number of hooks 2 can be two, fixed at one end of the two ends of the balancing beam 1, in a straight state, so as to facilitate the practical use of the hoisting device. An installation space for installing a connecting rod body 4 is formed between the plurality of hooks 2, a positioning block 3 is fixedly connected to the balancing beam 1, and an extrusion rod 10 is slidably connected to the balancing beam 1, wherein a guide hole is opened on the balancing beam 1, and the extrusion rod 10 is slidably connected to the guide hole. A locking mechanism is provided between the extrusion rod 10 and the positioning block 3, and the locking mechanism drives the extrusion rod 10 to abut against the connecting rod body 4. The locking mechanism includes a locking valve 6, and the extrusion rod 10 is installed on the locking valve 6; and a handle 7 is rotatably connected to the positioning block 3, and the handle 7, the positioning block 3 and the locking valve 6 are connected by a hinge 8; a hook 2 is also provided on the balance beam 1, and when the connecting rod body 4 is restricted, it can be hung on the hook 2 through an external lifting device to achieve the lifting operation of the lifting device. During the working process, when it is necessary to lift the connecting rod body 4, when the handle 7 is pressed down, the locking valve 6 pushes the top rod 5 to the lower end through the guide hole of the balance beam 1, and presses on the rod body of the connecting rod body 4, which plays a role in fixing the connecting rod body 4 and ensuring that it does not slide and fall off during the lifting process. At the same time, when the connecting rod body 4 is not lifted, the external lifting equipment hooks the lifting ring 9 to lift it. Since the lifting ring 9 is at one end of the balance beam 1, the balance lifting device tilts toward one end of the hook due to its own weight. When hoisting the connecting rod body 4, the large end hole of the connecting rod body 4 faces the side of the lifting ring 9. The large end of the connecting rod body 4 has a large weight, and the weight on the hook side of the hoisting device balances the weight of the large end hole of the connecting rod body 4, ensuring the horizontal balance of the connecting rod body 4 during the hoisting process, and avoiding the connecting rod body 4 from tilting due to factors such as weight, causing the connecting rod body 4 to fall off and be damaged, thereby greatly improving the practicality of the hoisting device and being suitable for wide promotion and use.

[0036] In the embodiment provided by the present invention, the positioning block 3 is connected to the balance beam 1 by bolts, so that the stability of the positioning block 3 during installation can be further improved.

[0037] In another embodiment provided by the present invention, a plurality of groups of extrusion rods 10 are slidably connected to the bottom of the balance beam 1. The plurality of groups of extrusion rods 10 together extrude the connecting rod body 4, which can further improve the stability of the connecting rod body 4 during the lifting process. The plurality of groups of extrusion rods 10 are connected by a mounting unit, so that the plurality of groups of extrusion rods 10 can slide together without separate operation. The lifting ring 9 is transmission-connected to the mounting unit through a linkage. When the lifting ring 9 slides upward, the extrusion rod 10 is driven to slide downward through the linkage to fix the connecting rod body 4. To this end, when the lifting ring 9 slides upward, the extrusion rod 10 can be passively driven to slide downward through the linkage to fix the connecting rod body 4.

[0038] In another embodiment provided by the present invention, the lifting ring 9 is slidably connected to the balance beam 1 through a limiting member, the limiting member includes a mounting rod 11 fixedly connected to the lifting ring 9, and a mounting ring 12 is fixedly connected to the bottom of the mounting rod 11; and a limiting groove adapted to the mounting rod 11 is provided on the balance beam 1, the mounting rod 11 is slidably connected to the limiting groove, a limiting ring is fixedly connected to the balance beam 1, and the diameter of the mounting ring 12 is larger than the diameter of the limiting ring; a tension spring 13 is arranged between the mounting ring 12 and the balance beam 1. The mounting unit includes a mounting frame 14 slidably connected to the inside of the balance beam 1, the mounting frame 14 is fixedly connected to multiple groups of extrusion rods 10, and multiple groups of positioning springs 15 are arranged between the mounting frame 14 and the balance beam 1; an extension rod is fixedly connected to the mounting frame 14, and the linkage member includes a gear 18, a first rack 17 is fixedly connected to the bottom of the mounting ring 12 through an extension plate 16, and a second rack 19 is fixedly connected to the extension rod, and the first rack 17 and the second rack 19 are respectively meshed on both sides of the gear 18. When external equipment needs to lift the connecting rod body 4 through the lifting device, the lifting ring 9 slides upward, which will drive the installation rod 11 to slide upward inside the balance beam 1. At this moment, the installation rod 11 drives the first rack 17 to slide upward through the extension plate 16 during the upward sliding stroke, and drives the second rack 19 to slide downward through the rack, and then drives multiple groups of extrusion rods 10 to slide downward through the mounting frame 14 to fix the connecting rod body 4; when the extrusion rod 10 has no space to fall, the lifting ring 9 cannot drive the installation rod 11 to move relative to the balance beam 1, and the installation rod 11 can only drive the balance beam 1 and the connecting rod body 4 to slide upward together to realize the lifting operation of the connecting rod body 4. In this process, when the connecting rod body 4 is heavier, the pressure exerted on the connecting rod body 4 by the lifting ring 9 through the linkage member to drive the extrusion rod 10 is greater, further improving the lifting efficiency of the connecting rod body 4.

[0039] In another embodiment provided by the present invention, a pressure rod 20 is slidably connected to the bottom of the push rod 5 through an elastic member, and a transmission unit is arranged between the mounting frame 14 and the pressure rod 20; when the mounting frame 14 drives multiple groups of extrusion rods 10 to slide downward, the pressure rod 20 is driven to slide downward through the transmission unit to fix the connecting rod body 4, and the transmission unit includes a transmission rod 23 slidably connected to the balance beam 1, a force block 25 is fixedly connected to the transmission rod 23, and a pressure block 22 adapted to the force block 25 is fixedly connected to the mounting frame 14, and the pressure block 22 abuts against the force block 25; a pressure groove is opened on the pressure rod 20, and a driving block is fixedly connected to the force rod, and the driving block abuts against the pressure groove; a reset spring 24 is arranged between the force block 25 and the balance beam 1, and the elastic force of the reset spring 24 drives the driving block to slide out of the pressure groove. Therefore, when the mounting frame 14 slides downward, the transmission rod 23 will be driven to slide through the cooperation between the pressure block 22 and the force block 25, and then the transmission rod 23 can drive the cooperation between the driving block and the pressure groove to drive the pressure rod 20 to slide downward. Therefore, the connecting rod body can be further restricted by the pressure rod 20, thereby further improving the practicality of the lifting device.

[0040] In another embodiment provided by the present invention, the elastic member includes a mounting spring 21, a mounting groove 26 is provided on the bottom of the push rod 5, the pressure rod 20 is slidably connected to the push rod 5 through the mounting groove 26, and the mounting spring 21 is arranged between the push rod 5 and the pressure rod 20, so as to further improve the practicality of the pressure rod 20. When the connecting rod body 4 is hoisted to a predetermined position, at this moment, under the restriction of the tension spring 13 and the positioning spring 15, the multiple groups of extrusion rods 10 will retract into the balance beam 1, which is convenient for the disassembly of the connecting rod body 4, and the mounting spring 21 is arranged between the pressure rod 20 and the push rod 5, so as to further facilitate the disassembly of the connecting rod body 4. At the same time, by arranging the mounting spring 21, the connecting rod body 4 can be pre-fixed, and the displacement of the connecting rod body 4 can be reduced, which will cause the connecting rod body 4 to fall off during the subsequent hoisting process, thus meeting the work needs.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connecting rod balancing hoisting device, comprising a balancing beam (1), a plurality of hooks (2) being fixedly connected to the balancing beam (1), and an installation space for installing a connecting rod body (4) being formed between the plurality of hooks (2), characterized in that: A positioning block (3) is fixedly connected to the balance beam (1), and an extrusion rod (10) is slidably connected to the balance beam (1), and a locking mechanism is provided between the extrusion rod (10) and the positioning block (3), and the locking mechanism drives the extrusion rod (10) to abut against the connecting rod body (4); The balance beam (1) is also provided with a hook (2).

2. A connecting rod balancing hoisting device according to claim 1, characterized in that: The locking mechanism comprises a locking valve (6), and the extrusion rod (10) is mounted on the locking valve (6); A handle (7) is rotatably connected to the positioning block (3); the handle (7), the positioning block (3) and the locking valve (6) are connected via a hinge (8).

3. A connecting rod balancing hoisting device according to claim 1, characterized in that: The positioning block (3) and the balance beam (1) are connected via bolts.

4. A connecting rod balancing hoisting device according to claim 1, characterized in that: The bottom of the balance beam (1) is slidably connected to a plurality of groups of extrusion rods (10), and the plurality of groups of extrusion rods (10) are connected via a mounting unit; The lifting ring (9) is connected to the mounting unit through a linkage member. When the lifting ring (9) slides upward, the linkage member drives the extrusion rod (10) to slide downward, thereby fixing the connecting rod body (4).

5. A connecting rod balancing hoisting device according to claim 4, characterized in that: The lifting ring (9) is slidably connected to the balance beam (1) via a limiting member; The limiting member comprises a mounting rod (11) fixedly connected to the lifting ring (9), and a mounting ring (12) is fixedly connected to the bottom of the mounting rod (11); A limiting groove matched with the mounting rod (11) is provided on the balance beam (1), the mounting rod (11) is slidably connected to the limiting groove, a limiting ring is fixedly connected to the balance beam (1), and the diameter of the mounting ring (12) is larger than the diameter of the limiting ring; A tension spring (13) is provided between the mounting ring (12) and the balance beam (1).

6. A connecting rod balancing hoisting device according to claim 5, characterized in that: The mounting unit comprises a mounting frame (14) slidably connected to the inside of the balance beam (1), the mounting frame (14) being fixedly connected to a plurality of groups of extrusion rods (10), and a plurality of groups of positioning springs (15) being arranged between the mounting frame (14) and the balance beam (1); An extension rod is fixedly connected to the mounting frame (14).

7. A connecting rod balancing hoisting device according to claim 6, characterized in that: The linkage member comprises a gear (18), a first rack (17) is fixedly connected to the bottom of the mounting ring (12) via an extension plate (16), a second rack (19) is fixedly connected to the extension rod, and the first rack (17) and the second rack (19) are respectively meshed on both sides of the gear (18).

8. The connecting rod balancing hoisting device according to claim 6, characterized in that: A pressure rod (20) is slidably connected to the bottom of the push rod (5) via an elastic member, and a transmission unit is provided between the mounting frame (14) and the pressure rod (20); When the mounting frame (14) drives the multiple groups of extrusion rods (10) to slide downward, the pressure rod (20) is driven to slide downward through the transmission unit, thereby fixing the connecting rod body (4).

9. A connecting rod balancing hoisting device according to claim 8, characterized in that: The transmission unit comprises a transmission rod (23) slidably connected to the balance beam (1), a force-bearing block (25) being fixedly connected to the transmission rod (23), and a pressure block (22) matching the force-bearing block (25) being fixedly connected to the mounting frame (14), and the pressure block (22) abutting against the force-bearing block (25); The pressure rod (20) is provided with a pressure groove, the force-bearing rod is fixedly connected with a driving block, and the driving block abuts against the pressure groove; A return spring (24) is arranged between the force-bearing block (25) and the balance beam (1), and the elastic force of the return spring (24) drives the driving block to slide out of the pressure groove.

10. A connecting rod balancing hoisting device according to claim 8, characterized in that: The elastic member comprises a mounting spring (21), a mounting groove (26) is provided on the bottom of the push rod (5), the pressure rod (20) is slidably connected to the push rod (5) through the mounting groove (26), and the mounting spring (21) is arranged between the push rod (5) and the pressure rod (20).

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