Ball screw lifting structure

Abstract

The utility model discloses a ball screw lifting structure which comprises a screw body, a screw sleeve is slidably mounted on the outer surface of the screw body, two first mounting cavities are symmetrically formed in the screw sleeve, power equipment and electromagnets are mounted in the two first mounting cavities, and clamping plates are mounted on the side faces of the two first mounting cavities. An iron rod is slidably mounted in the clamping plate, and the outer surface of the iron rod is sleeved with a spring. The installation cavity is formed in the position close to the lead screw body, the thin film is arranged at the opening of the installation cavity, vibration generated when the ball passes through the thin film is utilized, monitoring is conducted through the installed acceleration sensor, signals monitored by the acceleration sensor are combined, the electromagnet is powered on, and the arc-shaped clamping plate is moved by attracting the iron rod; and the special-shaped blocks arranged on the arc-shaped clamping plates are clamped into the grooves in the screw rod body, so that the screw sleeve is braked, a braking device does not need to be additionally arranged, and the ball screw rod can be directly put into use.

Description

Technical Field

[0001] The utility model relates to the technical field of ball screws, in particular to a ball screw lifting structure. Background Art

[0002] Ball screws are the most commonly used transmission elements in tool machinery and precision machinery. Their main function is to convert rotational motion into linear motion, or torque into axial repetitive force, while also having the characteristics of high precision, reversibility and high efficiency. Due to their low friction resistance, ball screws are widely used in various industrial equipment and precision instruments.

[0003] However, when the ball screw is used in a lifting structure, due to the characteristics of the ball screw, an additional braking device needs to be installed, which limits the use of the ball screw in the lifting movement and affects the high-precision characteristics of the ball screw in the lifting movement. Utility Model Content

[0004] The technical problem to be solved by the utility model is that a braking device needs to be additionally installed when a ball screw is used in a lifting structure.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a ball screw lifting structure, including a screw body, a screw sleeve is slidably installed on the outer surface of the screw body, two first installation cavities are symmetrically opened inside the screw sleeve, power supply equipment and electromagnets are installed inside the two first installation cavities, clamping plates are installed on the sides of the two first installation cavities, an iron rod is slidably installed inside the clamping plate, a spring is sleeved on the outer surface of the iron rod, an arc-shaped clamping plate is installed on one end of the iron rod extending to the outside of the first installation cavity, two outer circulation cavities are symmetrically opened inside the screw sleeve, two second installation cavities are symmetrically opened inside the screw sleeve, control mainboards with acceleration sensors are installed inside the two second installation cavities, a film adhered to the control mainboard is installed at the opening of the second installation cavity, and the control mainboard is electrically connected to the power supply equipment and the electromagnet on the same side.

[0006] The utility model is further configured that a special-shaped block matching the thread groove on the screw rod body is arranged on the inner side of the arc-shaped clamping plate.

[0007] The utility model is further configured such that the first installation cavity is opened inside the screw sleeve at a position far away from the screw body, the second installation cavity is opened inside the screw sleeve at a position close to the screw body, and the outer circulation cavity is opened in the screw sleeve between the first installation cavity and the second installation cavity.

[0008] The utility model is further configured that the spring is arranged on the iron rod between the clamping plate and the inner wall of the first installation cavity, and the top end of the spring is connected to the outer surface of the iron rod.

[0009] The utility model is further configured such that the installation directions of the iron rod and the electromagnet are both perpendicular to the side surface of the screw rod body, and the iron rod is located directly below the electromagnet.

[0010] The beneficial effects of the utility model are as follows:

[0011] The utility model opens an installation cavity near the position of the screw body and arranges a film at the opening of the installation cavity, utilizes the vibration generated when the ball passes through the film, monitors it through the installed acceleration sensor, and energizes the electromagnet in combination with the signal monitored by the acceleration sensor, and moves the arc clamping plate by attracting the iron rod, and the special-shaped block arranged on the arc clamping plate is clamped into the groove on the screw body to realize the braking of the screw sleeve, without the need to install an additional braking device, so that the ball screw can be directly put into use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a cross-sectional view of the internal structure of the utility model;

[0014] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0015] Figure 4 It is a structural schematic diagram of the arc-shaped splint of the utility model.

[0016] In the figure: 1. screw rod body; 2. screw sleeve; 3. first installation cavity; 4. power supply device; 5. electromagnet; 6. clamping plate; 7. iron rod; 8. spring; 9. arc clamping plate; 10. external circulation cavity; 11. second installation cavity; 12. acceleration sensor; 13. control main board; 14. film. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0018] See also Figures 1 to 4A ball screw lifting structure comprises a screw body 1, a screw sleeve 2 is slidably installed on the outer surface of the screw body 1, two first installation cavities 3 are symmetrically provided inside the screw sleeve 2, a power supply device 4 and an electromagnet 5 are installed inside the two first installation cavities 3, a card plate 6 is installed on the side of the two first installation cavities 3, an iron rod 7 is slidably installed inside the card plate 6, a spring 8 is sleeved on the outer surface of the iron rod 7, an arc clamping plate 9 is installed on one end of the iron rod 7 extending to the outside of the first installation cavity 3, two outer circulation cavities 10 are symmetrically provided inside the screw sleeve 2, two second installation cavities 11 are symmetrically provided inside the screw sleeve 2, a control mainboard 13 with an acceleration sensor 12 is installed inside the two second installation cavities 11, a film 14 attached to the control mainboard 13 is installed at the opening of the second installation cavity 11, and the control mainboard 13 is electrically connected to the power supply device 4 and the electromagnet 5 on the same side.

[0019] like Figure 3 As shown, a special-shaped block matching the thread groove on the screw body 1 is arranged on the inner side of the arc clamping plate 9, and the special-shaped block is clamped in the thread groove to achieve position limiting, thereby achieving the purpose of locking the position of the screw sleeve 2.

[0020] like Figure 2 As shown, the first mounting cavity 3 is opened inside the screw sleeve 2 at a position far away from the screw body 1, the second mounting cavity 11 is opened inside the screw sleeve 2 at a position close to the screw body 1, and the outer circulation cavity 10 is opened in the screw sleeve 2 between the first mounting cavity 3 and the second mounting cavity 11. Combined with the setting positions of each mounting cavity and the outer circulation cavity 10, the screw sleeve 2 can be suitable for a ball screw adopting an internal circulation or external circulation ball circulation method.

[0021] like Figure 2 As shown, the spring 8 is arranged on the iron rod 7 between the clamping plate 6 and the inner wall of the first mounting cavity 3, and the top end of the spring 8 is connected to the outer surface of the iron rod 7. When the iron rod 7 is attracted by the magnetic force generated by the electromagnet 5, the spring 8 is stretched, so that when the electromagnet 5 is powered off, the iron rod 7 is reset with the help of the elastic force of the spring 8.

[0022] The iron rod 7 and the electromagnet 5 are installed in a direction perpendicular to the side of the screw body 1. The iron rod 7 is located directly below the electromagnet 5 so that the iron rod 7 can be correctly attracted by the magnetic force generated by the electromagnet 5.

[0023] When the utility model is in use, since the ball screw realizes transmission through the rolling ball, when the screw body 1 rotates, the ball rolls and passes through the film 14, vibration is generated on the film 14. After the vibration is sensed on the acceleration sensor 12, the acceleration sensor 12 sends a signal to the control main board 13, and the electromagnet 5 is energized through the control of the control main board 13, and the magnetic force generated by the electromagnet 5 is used to attract the iron rod 7, so that the arc clamping plate 9 no longer fits the screw body 1, thereby releasing the lock of the screw sleeve 2. When the screw body 1 stops rotating, the ball no longer rolls and does not generate vibration on the film 14, so that the electromagnet 5 is no longer energized. At this time, the iron rod 7 is reset under the elastic force of the spring 8 after stretching, thereby forming a clamp on the screw body 1, and the special-shaped block on the inner side of the arc clamping plate 9 is clamped into the groove on the screw body 1 to form a lock.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A ball screw lifting structure, comprising a screw body (1), characterized in that: A screw sleeve (2) is slidably mounted on the outer surface of the screw rod body (1); two first mounting cavities (3) are symmetrically provided inside the screw sleeve (2); a power supply device (4) and an electromagnet (5) are installed inside the two first mounting cavities (3); a clamping plate (6) is installed on the side of the two first mounting cavities (3); an iron rod (7) is slidably mounted inside the clamping plate (6); a spring (8) is sleeved on the outer surface of the iron rod (7); and one end of the iron rod (7) extending outside the first mounting cavity (3) is mounted with a spring (8). An arc-shaped clamping plate (9), two outer circulation chambers (10) are symmetrically provided inside the screw sleeve (2), two second installation chambers (11) are symmetrically provided inside the screw sleeve (2), a control mainboard (13) with an acceleration sensor (12) is installed inside the two second installation chambers (11), a film (14) attached to the control mainboard (13) is installed at the opening of the second installation chamber (11), and the control mainboard (13) is electrically connected to a power supply device (4) and an electromagnet (5) on the same side.

2. A ball screw lifting structure according to claim 1, characterized in that: A special-shaped block matching the threaded groove on the screw body (1) is arranged on the inner side of the arc-shaped clamping plate (9).

3. The ball screw lifting structure according to claim 1, characterized in that: The first installation cavity (3) is opened inside the screw sleeve (2) at a position far away from the screw body (1), the second installation cavity (11) is opened inside the screw sleeve (2) at a position close to the screw body (1), and the outer circulation cavity (10) is opened in the screw sleeve (2) between the first installation cavity (3) and the second installation cavity (11).

4. The ball screw lifting structure according to claim 1, characterized in that: The spring (8) is arranged on the iron rod (7) between the clamping plate (6) and the inner wall of the first installation cavity (3), and the top end of the spring (8) is connected to the outer surface of the iron rod (7).

5. The ball screw lifting structure according to claim 1, characterized in that: The iron rod (7) and the electromagnet (5) are installed in a direction perpendicular to the side of the screw rod body (1), and the iron rod (7) is located directly below the electromagnet (5).

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