A movable arm assembly for a bolt removal apparatus

Abstract

A movable arm assembly of a bolt dismounting device comprises a first rod, one end of which is hingedly connected to a cylinder seat, the other end of which is hingedly connected to one end of a second rod, the other end of the second rod being rotatably mounted on a machine base; an angle adjusting rod is arranged on the cylinder seat, one end of the angle adjusting rod being hingedly connected to one end of a first telescopic driving member, the other end of the first telescopic driving member being hingedly connected to the middle of the second rod, the middle of the second rod being hingedly connected to one end of a second telescopic driving member, the other end of the second telescopic driving member being hingedly connected to the machine base. A multi-dimensional adjustment mode is adopted, the cylinder seat and the wrench can be quickly and accurately aligned with the target bolt in a complex space environment, the time for repeated adjustment of the traditional device due to inaccurate positioning is greatly reduced, and the working efficiency of bolt dismounting is significantly improved.

Description

Technical Field

[0001] This utility model belongs to the field of bolt disassembly and assembly equipment, and specifically relates to a movable support arm assembly for bolt disassembly and assembly equipment. Background Technology

[0002] In the maintenance and repair of various mechanical equipment, the installation and removal of bolts is a crucial step. Taking a water turbine as an example, its blade bolts are subjected to complex hydraulic environments and mechanical stresses for extended periods, requiring regular inspection, replacement, and tightening to ensure the safe and stable operation of the turbine. The movable support arm assembly, as the core component for precise positioning and operation of bolt installation and removal equipment, directly impacts the efficiency, accuracy, and safety of the installation and removal process. Currently, traditional bolt removal and assembly equipment often uses simple linkage mechanisms or single-drive systems for their movable arm components. While linkage mechanisms can achieve a certain degree of angle adjustment, their limited degrees of freedom in complex spatial environments make it difficult to accurately align the components with the target bolt. This often requires operators to spend a significant amount of time making repeated adjustments, resulting in low work efficiency. Single-drive movable arms, on the other hand, cannot flexibly control the adjustment force and precision under different working conditions. For example, in confined spaces or scenarios requiring delicate operations, they struggle to meet the high-precision requirements of bolt removal and assembly. While some hydraulically driven movable arm assemblies offer improved driving force, their flawed structural design leads to swaying and instability during operation, affecting the accuracy of bolt installation and removal. Furthermore, existing movable arm assemblies lack effective balance and transmission optimization in their interaction with moving parts (such as the moving cylinder), resulting in low overall equipment precision and reliability, failing to meet the demands of modern industry for efficient and precise bolt installation and removal. Therefore, developing a movable arm assembly for bolt installation and removal equipment with optimized structure, precise adjustment, and stable reliability has become an urgent technical challenge. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a movable support arm assembly for a bolt disassembly and assembly device. With multi-dimensional adjustment methods, it can quickly and accurately align the sleeve seat and wrench with the target bolt in complex spatial environments, greatly reducing the time spent on repeated adjustments due to inaccurate positioning of traditional equipment, and significantly improving the work efficiency of bolt disassembly and assembly.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A movable support arm assembly for a bolt removal and installation device includes a first rod, one end of which is hinged to a protective sleeve seat, and the other end of which is hinged to one end of a second rod. The other end of the second rod is rotatably mounted on a machine base. An angle adjustment rod is provided on the protective sleeve seat, the end of which is hinged to one end of a first telescopic drive member, the other end of which is hinged to the middle of the second rod, and the middle of the second rod is hinged to one end of the second telescopic drive member. The other end of the second telescopic drive member is hinged to the machine base. Preferably, the angle adjustment rod is a diagonal rod, which is welded to the outer wall of the sleeve base.

[0005] Preferably, the first telescopic drive component is a first hydraulic push cylinder, and the second telescopic drive component is a second hydraulic push cylinder, with the first and second hydraulic push cylinders being supplied with oil by an oil pump system.

[0006] Preferably, the inner side of the sleeve base is provided with a gear mounting groove, and a drive gear and a balance gear are provided in the gear mounting groove.

[0007] Preferably, there are two gear mounting slots, which are symmetrically arranged inside the sleeve seat.

[0008] Preferably, one gear mounting slot is provided with two balancing gears, and the other gear mounting slot is provided with a drive gear and a balancing gear.

[0009] Preferably, the balance gear is connected to the motor via a worm gear reducer.

[0010] Preferably, both ends of the first hydraulic push cylinder and the second hydraulic push cylinder are provided with hinge shafts, and self-lubricating bearings are sleeved on the hinge shafts.

[0011] Preferably, a bushing is provided at the hinge joint between the first rod and the sleeve seat, and the bushing is made of wear-resistant alloy material.

[0012] Preferably, a slewing bearing is provided at the connection between the second rod and the base, with the inner ring of the slewing bearing fixedly connected to the base and the outer ring fixedly connected to the second rod.

[0013] The present invention can achieve the following beneficial effects: 1. The hinged connection of the first rod, the second rod, and the diagonal rod, along with the coordinated drive of the dual hydraulic push cylinders, enables the component to have multi-degree-of-freedom adjustment capabilities. It can quickly and accurately align the target bolt in complex spaces, reducing adjustment time. By controlling the hydraulic oil pressure and flow, the adjustment force and precision of the outrigger can be precisely controlled to meet the requirements of high-precision assembly and disassembly. 2. The diagonal brace and the protective sleeve seat are welded to form a triangular stable structure, which enhances the overall rigidity and reduces the swaying and deformation when the support arm moves; the symmetrical gear mounting grooves on the inner side of the protective sleeve seat and the reasonably distributed drive gears and balance gears can balance the lateral force of the moving cylinder and improve the stability of the cooperation between the components and the moving parts. 3. The balance gear is connected to the motor via a worm gear reducer, which can provide suitable speed and torque to ensure the balance effect; the reverse self-locking characteristic of the worm gear drive can prevent the equipment from moving on its own due to external force when it stops, thus improving safety, and the speed reduction transmission can make the movement more stable and controllable. 4. The components are connected by hinges or other means, which makes the structure simple and easy to disassemble and assemble; by adjusting the extension stroke and angle of the hydraulic push cylinder, it can be adapted to bolts of different specifications or installation positions; the welded fixed diagonal bar and modular gear mounting groove design facilitate component inspection, maintenance and replacement, reduce maintenance costs and extend equipment life. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural diagram of the protective sleeve base of this utility model.

[0015] In the figure: first rod 101, second rod 102, diagonal rod 103, first hydraulic push cylinder 104, second hydraulic push cylinder 105, protective cylinder seat 2, gear mounting groove 201, drive gear 202, balance gear 203. Detailed Implementation

[0016] Preferred solutions include Figures 1 to 2 As shown, a movable support arm assembly of a bolt removal and installation device includes a first rod 101, one end of which is hinged to a protective sleeve seat 2, and the other end of which is hinged to one end of a second rod 102. The other end of the second rod 102 is rotatably mounted on a base 11. An angle adjustment rod is provided on the protective sleeve seat 2, the end of which is hinged to one end of a first telescopic drive member, the other end of which is hinged to the middle of the second rod 102, and the middle of the second rod 102 is hinged to one end of the second telescopic drive member. The other end of the second telescopic drive member is hinged to the base 11. In the above structure, the hinged design of the first rod 101 with the sleeve seat 2 and the second rod 102 gives the movable support arm assembly flexible rotational freedom, allowing the entire support arm to be adjusted at multiple angles in space. The rotatable connection between the second rod 102 and the base 11 provides a stable support foundation for the movable support arm and also participates in the angle and position adjustment process. The coordinated work of the angle adjustment rod, the first telescopic drive, and the second telescopic drive is the key to achieving precise adjustment of the support arm. The first telescopic drive changes the angle between the angle adjustment rod and the second rod 102 through its telescopic movement, while the second telescopic drive further fine-tunes the position and angle of the second rod 102. The three work together to accurately adjust the posture of the sleeve seat 2 and subsequent components according to the actual installation position of the bolt, so that the wrench 6 is accurately aligned with the bolt.

[0017] Furthermore, the angle adjustment rod is a diagonal rod 103, which is welded to the outer wall of the protective cylinder seat 2. Choosing the diagonal rod 103 as the angle adjustment rod and fixing it to the outer wall of the protective cylinder seat 2 by welding offers several advantages. From a structural stability perspective, the triangular structure design of the diagonal rod 103 effectively enhances the overall rigidity and stability. When subjected to the force of the first telescopic drive component, it reduces deformation and swaying, ensuring the accuracy of angle adjustment. The welded connection provides a strong and reliable connection strength, ensuring that the diagonal rod 103 and the protective cylinder seat 2 form a unified whole. This prevents loosening or detachment during long-term use, improving the reliability of equipment operation. Furthermore, the first telescopic drive component is a first hydraulic push cylinder 104, and the second telescopic drive component is a second hydraulic push cylinder 105. Both the first and second hydraulic push cylinders 104 and 105 are supplied with oil by an oil pump system. The first and second hydraulic push cylinders 104 and 105 are chosen as the telescopic drive components because hydraulic drive has unique advantages. The hydraulic push cylinder can provide a large thrust, meeting the needs of the movable outrigger to overcome resistance such as gravity and friction during adjustment, ensuring that the outrigger can be stably and quickly adjusted to the target position. Through the oil pump system, precise control of the hydraulic push cylinder can be achieved, allowing for flexible adjustment of the hydraulic oil pressure and flow rate according to actual needs, thereby precisely controlling the telescopic speed and stroke of the hydraulic push cylinder and achieving fine adjustment of the movable outrigger. In addition, the hydraulic system has good stability and buffering performance, reducing impact and vibration when driving the movable outrigger, extending the service life of the equipment, and also improving operational safety and comfort. Furthermore, a gear mounting groove 201 is provided on the inner side of the retaining sleeve base 2, and a drive gear 202 and a balance gear 203 are installed in the gear mounting groove 201. The gear mounting groove 201 and the installation of the drive gear 202 and balance gear 203 on the inner side of the retaining sleeve base 2 are designed to achieve smooth and precise movement of the moving cylinder 3. The gear mounting groove 201 provides a reasonable installation space and support structure for the drive gear 202 and balance gear 203, ensuring the stability and accuracy of the gears during operation. Driven by a power source, the drive gear 202 rotates and, through meshing with the rack 8 on the outer wall of the moving cylinder 3, converts the rotational motion into linear motion of the moving cylinder 3, realizing the feeding action of the wrench 6. The balance gear 203 works in conjunction with the drive gear 202 to balance the lateral forces experienced by the moving cylinder 3 during movement, preventing the moving cylinder 3 from shifting or jamming, ensuring that the moving cylinder 3 can move smoothly along the predetermined direction, thereby improving the overall working accuracy and reliability of the bolt removal and installation equipment.

[0018] Furthermore, there are two gear mounting slots 201, symmetrically arranged inside the protective cylinder seat 2. The use of two symmetrically arranged gear mounting slots 201 offers significant technical advantages compared to a single gear mounting slot. The symmetrical structural design allows for a more even distribution of force on the moving cylinder 3 during movement, effectively reducing problems such as swaying and offset caused by uneven force distribution, thus improving the stability and accuracy of the moving cylinder 3's movement. Two gear mounting slots 201 can accommodate more gears, such as increasing the number of balancing gears 203, further enhancing the balancing effect on the moving cylinder 3 and improving the overall performance of the equipment. In addition, the symmetrical structure facilitates ensuring machining accuracy and assembly quality during equipment manufacturing and assembly, reducing production difficulty, and also benefits equipment maintenance and repair, extending the equipment's service life.

[0019] Furthermore, one gear mounting slot 201 is equipped with two balancing gears 203, and the other gear mounting slot 201 is equipped with a drive gear 202 and a balancing gear 203. The two balancing gears 203 on one gear mounting slot 201 provide stronger balancing support on one side of the moving cylinder 3. Working in conjunction with the drive gear 202 and balancing gear 203 on the other side, they ensure that the moving cylinder 3 maintains good balance during movement, effectively reducing lateral displacement and swaying. The proper combination of the drive gear 202 and balancing gear 203 ensures power transmission to the moving cylinder 3 and enhances the smoothness and accuracy of movement, allowing the wrench 6 to more accurately align and contact the bolt, improving the efficiency and quality of bolt assembly and disassembly. Furthermore, the balancing gear 203 is connected to the motor via a worm gear reducer. This connection between the balancing gear 203 and the motor, using a worm gear reducer, offers unique technical characteristics and advantages. The worm gear reducer effectively reduces the motor's output speed while increasing its output torque, allowing the balancing gear 203 to achieve suitable speed and torque to meet the operational requirements of balancing the moving cylinder 3. The worm gear drive has a reverse self-locking characteristic; when the motor stops, the balancing gear 203 can be reliably locked, preventing the moving cylinder 3 from moving on its own due to external forces, thus ensuring the safety and stability of the equipment when it is stationary. In addition, the worm gear reducer has a compact structure, occupies little space, and is easy to arrange rationally within the casing 2, which is beneficial for the miniaturization and integration of the equipment.

[0020] Furthermore, both ends of the first hydraulic push cylinder 104 and the second hydraulic push cylinder 105 are provided with hinge shafts, and self-lubricating bearings are fitted on the hinge shafts. A bushing is provided at the hinge point between the first rod 101 and the protective cylinder seat 2, and the bushing is made of wear-resistant alloy material. A slewing bearing is provided at the connection point between the second rod 102 and the machine base 11. The inner ring of the slewing bearing is fixedly connected to the machine base 11, and the outer ring is fixedly connected to the second rod 102.

[0021] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A mobile arm assembly of a bolt-on and bolt-off apparatus, characterized by: Includes a first rod (101), one end of which is hinged to the sleeve base (2), the other end of which is hinged to one end of the second rod (102), and the other end of the second rod (102) is rotatably mounted on the base (11); the sleeve base (2) is provided with an angle adjustment rod, the end of which is hinged to one end of the first telescopic drive member, the other end of which is hinged to the middle of the second rod (102), and the middle of the second rod (102) is hinged to one end of the second telescopic drive member; the other end of the second telescopic drive member is hinged to the base (11).

2. A moveable arm assembly for a bolt removal apparatus as claimed in claim 1, wherein: The angle adjustment rod is a diagonal rod (103), which is welded to the outer wall of the sleeve seat (2).

3. A moveable arm assembly for a bolt removal apparatus as defined in claim 1, wherein: The first telescopic drive component is a first hydraulic push cylinder (104), and the second telescopic drive component is a second hydraulic push cylinder (105). The first hydraulic push cylinder (104) and the second hydraulic push cylinder (105) are supplied with oil by an oil pump system.

4. A moveable arm assembly for a bolt removal apparatus as defined in claim 1, wherein: The inner side of the sleeve base (2) is provided with a gear mounting groove (201), and the gear mounting groove (201) is provided with a drive gear (202) and a balance gear (203).

5. A moveable arm assembly for a bolt removal apparatus as claimed in claim 4, wherein: There are two gear mounting slots (201), and the two gear mounting slots (201) are symmetrically arranged inside the sleeve seat (2).

6. A moveable arm assembly for a bolt removal apparatus as claimed in claim 5, wherein: One of the gear mounting slots (201) is provided with two balance gears (203), and the other gear mounting slot (201) is provided with a drive gear (202) and a balance gear (203).

7. A moveable arm assembly for a bolt removal apparatus as claimed in claim 6, wherein: The balance gear (203) is connected to the motor through a worm gear reducer.

8. A moveable arm assembly for a bolt removal apparatus as defined in claim 3, wherein: Both ends of the first hydraulic push cylinder (104) and the second hydraulic push cylinder (105) are provided with hinge shafts, and self-lubricating bearings are sleeved on the hinge shafts.

9. A moveable arm assembly for a bolt removal apparatus as defined in claim 1, wherein: A bushing is provided at the hinge of the first rod (101) and the sleeve seat (2), and the bushing is made of wear-resistant alloy material.

10. A moveable arm assembly for a bolt removal apparatus according to claim 1, wherein: A slewing bearing is provided at the connection between the second rod (102) and the base (11). The inner ring of the slewing bearing is fixedly connected to the base (11), and the outer ring is fixedly connected to the second rod (102).

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