Fixing device capable of being quickly disassembled and assembled on round rod

Abstract

The utility model belongs to the field of engineering construction, and particularly relates to a fixing device capable of being quickly assembled and disassembled on a round rod, the device comprises a detachable shell part and an internal assembly part, the detachable shell part comprises a top cover, a conical shell and a detachable bottom cover, and the internal assembly part comprises an upper baffle, a lower baffle, a small ball and an auxiliary spring. The upper baffle and the lower baffle both comprise poking pieces, a longitudinal opening allowing the poking pieces to slide up and down is formed in the conical shell, the round rod is rapidly locked by the small ball through the acting force of the lower baffle and the auxiliary spring, the poking pieces of the upper baffle fluctuate downwards, and the device is rapidly unlocked. The nut is simple in structural design, does not need external tools, is convenient to disassemble and assemble, is suitable for any angle, can be replaced and maintained, can replace the function of a nut in many aspects, is also suitable for a smooth round rod which is not suitable for the nut, greatly saves time, improves the disassembly and assembly efficiency of an operator, and reduces the labor intensity of the operator. And an inexperienced person in daily life can also conveniently use the device.

Description

Technical Field

[0001] The utility model belongs to the field of engineering construction, and in particular relates to a fixing device which can be quickly assembled and disassembled on a round rod. Background Art

[0002] In construction and daily life, nuts or other fixing devices are often installed on bolts or round rods. When installing and removing such fixing devices such as nuts, a lot of time is spent on tightening and loosening the nuts, and special tools are required for both installation and removal. Especially in cramped spaces, tools are usually not able to be used normally, or it is impossible to install and remove the fixing devices without special tools, which brings certain inconveniences and wastes of work time to construction. Therefore, there is an urgent need for a simple fixing device that can be quickly installed and removed and can replace nuts to a certain extent or has a wide range of applications and does not require tools. Utility Model Content

[0003] The purpose of the utility model is to provide a fast disassembly and assembly fixing device on a round rod, so as to solve the problems in the background technology of waste of working hours in existing construction production or daily application or the need for a simpler and more widely applicable device.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A fixing device for quick disassembly and assembly on a round rod, characterized in that it includes a detachable shell part and an internal component part, the detachable shell part includes a top cover, a conical shell and a detachable bottom cover, the top cover is located at the top end of the conical shell, and the top cover and the conical shell are connected into a whole, the detachable bottom cover is located at the bottom of the conical shell, the internal component part includes an upper baffle, a lower baffle, a small ball and an auxiliary spring, the upper baffle and the lower baffle are installed on the inner wall of the conical shell for sliding up and down, the upper baffle is located below the inside of the top cover, the lower baffle is located above the inside of the detachable bottom cover, and the upper baffle and the lower baffle both include paddles, the small ball is arranged between the upper baffle and the lower baffle, and the auxiliary spring is arranged between the lower baffle and the detachable bottom cover.

[0006] Furthermore, the conical shell is provided with a longitudinal opening for the paddles of the upper baffle and the lower baffle to slide freely.

[0007] Furthermore, the connection between the detachable bottom cover and the shell part is a movable joint, and the detachable bottom cover is an adjustable structure.

[0008] Furthermore, the top cover, the detachable bottom cover, the upper baffle and the lower baffle are circular, and an opening is provided at the center of the circle, and the diameter of the opening is larger than the diameter of the round rod.

[0009] Furthermore, the number of the small balls is no less than 3, and the diameters of the small balls should be sufficient to form an angle with the round rod.

[0010] Furthermore, the lower bottom cover of the fixing device is an adjustable and detachable structure. By adjusting the cover, the spring has different forces, which can be applied to more scenarios and can resist shock to a certain extent.

[0011] Furthermore, the round rod insertion hole of the fixing device can be appropriately larger to be compatible with round rods of different diameters, thereby enhancing versatility.

[0012] Furthermore, the detachable shell part and the internal component part of the fixing device can be made of metal or non-metal materials according to usage requirements.

[0013] Furthermore, the fixing device can cooperate with the spring washer to enhance the fastening force and shock resistance.

[0014] Beneficial effects of the utility model:

[0015] The round rod of the utility model passes through the round hole into the fixing device. At this time, the small ball is located between the upper baffle and the lower baffle, and is in contact with the round rod but not tightly fitted. By pushing the paddle of the lower baffle downward, the lower baffle will press the auxiliary spring, and the auxiliary spring will generate an upward force. This force pushes the small ball through the lower baffle, and the small ball begins to move upward along the round rod. The contact area gradually increases. During the rising process, the gap between the small balls becomes narrower and narrower, so that the friction force of squeezing between the small ball and the round rod will become greater and greater. As they rise to a certain position, the small ball and the round rod are tightly fitted, and when the point is reached that the small ball cannot slide down by itself due to gravity, the round rod is stably locked. While the small ball locks the round rod, the elastic force of the spring applies a continuous upward force to the lower baffle, helping to support the position of the small ball and prevent it from sliding down. To unlock the rod, the upper baffle is moved downward, which applies a force sufficient to overcome the original friction, pushing the ball downward. The downward sliding path widens, gradually reducing the contact area between the ball and the rod and weakening the friction. As a result, the rod is no longer locked by the ball and can be unlocked freely. This utility model has a simple and convenient structure and can replace the function of nuts in many aspects. It has strong compatibility and is also applicable to smooth rods that are not suitable for nuts. It is particularly easy to assemble and disassemble, does not require tools, is replaceable and repairable, and can be used at any angle. It also has the characteristics of being shock-resistant and highly stable. It can greatly simplify the construction process, save construction time, and can even be used by inexperienced people. It plays an important role in situations where space is limited and tools are unsuitable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an appearance diagram of the fixing device of the present invention;

[0017] Figure 2 This is a schematic diagram of the use scenario and composition of the fixing device of the present invention;

[0018] Figure 3 This is a schematic diagram of the fixing device of the present invention.

[0019] In the figure: detachable shell part 1, conical shell 1-1, detachable bottom cover 1-2, top cover 1-3, auxiliary spring 2, lower baffle 3, small ball 4, upper baffle 5, round rod 6, fixed bottom plate 7. DETAILED DESCRIPTION

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0021] like Figure 1-Figure 3 In this embodiment, it includes a removable shell part 1 and an internal component part, the removable shell part 1 includes a top cover 1-3, a conical shell 1-1 and a removable bottom cover 1-2, the top cover 1-3 is located at the top of the conical shell 1-1, and the top cover 1-3 and the conical shell 1-1 are connected into a whole, the removable bottom cover 1-2 is located at the bottom of the conical shell 1-1, the internal component part includes an upper baffle 5, a lower baffle 3, a small ball 4 and an auxiliary spring 2, the upper baffle 5 and the lower baffle 3 are installed on the inner wall of the conical shell 1-1 for sliding up and down, the upper baffle 5 is located below the inside of the top cover 1-3, the lower baffle 3 is located above the inside of the removable bottom cover 1-2, and the upper baffle 5 and the lower baffle 3 both include paddles, the small ball is arranged in the middle of the upper baffle 5 and the lower baffle 3, and the auxiliary spring 2 is arranged between the lower baffle 3 and the removable bottom cover 1-2. The conical housing 1-1 is provided with a longitudinal opening to ensure that the paddles on the lower baffle 3 and upper baffle 5 can slide freely in the longitudinal direction. The removable housing portion 1 is used to install the internal components and provide sufficient counteracting force to the ball 4. The connection between the removable bottom cover 1-2 and the conical housing 1-1 is a flexible joint, which is used to assist the spring 2 and replace the internal components according to actual conditions. The auxiliary spring 2 in the internal component is used to offset the gravity of the ball 4 and the gravity of the lower baffle 3, and can provide a certain counteracting force, enabling full-angle use and a certain degree of vibration resistance. The lower baffle 3 (including the paddle) can transmit the force of the auxiliary spring 2 to the ball 4. The upper baffle 5 (including the paddle) can be moved in the direction of the lower baffle to unlock the ball 4.

[0022] In this embodiment, the small ball 4 of the fixing device is the core component, which can transmit force to the conical shell 1-1 and the round rod 6 for locking the round rod 6. The number is not less than 3 and can be increased or decreased according to actual conditions. The material is not fixed and the α angle requirement can be met according to needs.

[0023] In this embodiment, the hole through which the round rod 6 of the fixing device passes can be appropriately larger to accommodate round rods 6 of different diameters.

[0024] In this embodiment, the fixed base plate 7 is positioned vertically downward, but the device is suitable for all-around use.

[0025] In this embodiment, the fixing mechanism operates on the principle of frictional self-locking. Ignoring the effect of auxiliary spring 2, rod 6 within conical housing 1-1 is clamped by ball 4, and ignoring the gravity of rod 6 and ball 4. If a downward pulling force F is applied to rod 6, rod 6 will exert a downward frictional force of 0.5F on ball 4, while also applying a horizontal pressure to ball 4. Applying the three-force equilibrium condition to rod 6 and the lever balance principle to ball 4, the following relationship must be satisfied for the rod to self-lock:

[0026] F / 2*R(1+cosα)=NR sinα

[0027] f max =μN

[0028] F≤2f max

[0029] Solving the system of equations yields:

[0030] α≤arccos[(1-μ 2 ) / (1+μ 2 )]

[0031] Literature shows that the friction coefficient between steel and steel is between 0.10 and 0.15. For the sake of being strict, the friction coefficient between the round rod 6 and the small ball 4 is taken as 0.10. Then, if the steel nail is to be frictionally self-locked, the angle α must be less than or equal to 11.42°. The top angle of the conical shell part must be less than or equal to 22.84°. When the top angle of the conical metal groove must be less than or equal to 22.84°, the pulling force applied to the steel nail will not be greater than the maximum static friction force that needs to be overcome to pull out the steel nail, that is, the steel nail is in a frictionally self-locking state and cannot be pulled out. Therefore, this fixing device utilizes the principle of frictional self-locking. Under the condition of frictional self-locking, with the help of the auxiliary spring 2, theoretically, no matter how large the force is at all angles, it is impossible to pull out the round rod 6. The same applies when the device is made of other materials.

[0032] like Figure 2 , the implementation process of this embodiment is as follows:

[0033] (1) Insert the cross arm into the round rod 6 to the required elevation.

[0034] (2) Next, turn the upper baffle 5 of the fixing device upward and insert it into the round rod 6 in the vertical direction so that it is close to the bottom of the cross arm.

[0035] (3) At this time, the device is locked with the boom 6, and the gravity of the cross arm is borne by this fixing device.

[0036] (4) Follow steps (1) to (3) at the other end of the crossarm to complete the crossarm fixation.

[0037] (5) When disassembling, push the paddle on the upper baffle 5 downward with appropriate force to press it down, and pull the fixing device downward until it is removed.

[0038] (6) When the internal components of the fixing device are damaged or need to be replaced, rotate counterclockwise to remove the lower baffle 3.

[0039] (7) When the force of the auxiliary spring 2 needs to be increased, the lower baffle 3 is rotated clockwise to increase the force.

[0040] The above shows and describes the main features, basic principles, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A fast disassembly and assembly fixing device on a round rod, characterized in that: The invention comprises a detachable shell part (1) and an internal component part; the detachable shell part (1) comprises a top cover (1-3), a conical shell (1-1) and a detachable bottom cover (1-2); the top cover (1-3) is located at the top of the conical shell (1-1), and the top cover (1-3) and the conical shell (1-1) are connected to form a whole; the detachable bottom cover (1-2) is located at the bottom of the conical shell (1-1); the internal component part comprises an upper baffle (5), a lower baffle (3), a small ball (4) and an auxiliary The auxiliary spring (2) is installed on the inner wall of the conical shell (1-1) in an upward and downward sliding manner. The upper baffle (5) is located at the lower part of the top cover (1-3), and the lower baffle (3) is located at the upper part of the removable bottom cover (1-2). Both the upper baffle (5) and the lower baffle (3) include a paddle. The small ball (4) is arranged between the upper baffle (5) and the lower baffle (3). The auxiliary spring (2) is arranged between the lower baffle (3) and the removable bottom cover (1-2).

2. A fast disassembly and assembly fixing device on a round rod according to claim 1, characterized in that: The conical outer shell (1-1) is provided with a longitudinal opening for the paddles of the upper baffle (5) and the lower baffle (3) to slide freely.

3. A fast disassembly and assembly fixing device on a round rod according to claim 1, characterized in that: The connection between the detachable bottom cover (1-2) and the conical outer shell (1-1) is a flexible connection, and the detachable bottom cover (1-2) is an adjustable structure.

4. The fast disassembly and assembly fixing device on a round rod according to claim 1, characterized in that: The top cover (1-3), the detachable bottom cover (1-2), the upper baffle (5) and the lower baffle (3) are circular, and an opening is arranged at the center of the circle, and the diameter of the opening is slightly larger than the diameter of the round rod (6).

5. The fast disassembly and assembly fixing device on a round rod according to claim 1, characterized in that: The number of the small balls (4) is not less than 3, and the diameter of the small balls (4) should be sufficient to form an angle with the round rod (6).

6. The fast disassembly and assembly fixing device on a round rod according to any one of claims 1 to 5, characterized in that: The detachable shell part (1) and the internal component part of the fixing device can be made of metal or non-metal material according to the use requirements.

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