Ball screw with locking function

Abstract

The utility model discloses a ball screw with a locking function, belongs to the technical field of transmission screw rods, and aims to solve the problems that in the prior art, the gravity of an object pulls the screw rod, so that the screw rod rotates, and the use stability of the screw rod is insufficient. The ball screw comprises an outer rod, a lifting block, a driving mechanism and a wobble plate, the outer rod is vertically arranged, and a screw rod main body is rotatably mounted in the outer rod; a lifting block is mounted on the screw rod main body, the lifting block is in threaded connection with the screw rod main body, and a rocking disc is rotationally mounted on the side wall of the outer rod; a translation groove is horizontally formed in one side, adjacent to the wobble plate, of the outer rod, and a driving mechanism is mounted in the translation groove; the driving mechanism comprises a sliding block, a limiting insertion rod and a mounting ring, and the sliding block is slidably mounted in the translation groove. According to the ball screw with the locking function, the screw main body which stays in a rotating mode can be limited, so that the screw main body cannot continuously rotate, even if an object exerts pressure on the lifting block, the screw main body can be firmly fixed, and the use stability of the ball screw is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission screw rods, and in particular relates to a ball screw rod with a locking function. Background Art

[0002] A ball screw is a linear motion transmission device, usually composed of a ball screw, a nut, and a bearing. It uses the rolling of the ball on the screw to transmit force and achieve linear motion. Ball screws have the advantages of high transmission efficiency, high speed, high precision, low friction, and long life, so they are widely used in machine tools, automation equipment, CNC machine tools, robots, and other fields. The rotation of the screw is driven by thread transmission, and when the screw does not rotate, thread transmission cannot be performed. At this time, the object being transmitted remains stationary. However, if the gravity of the object being transmitted is large and the screw is in an inclined or vertical state, the gravity of the object will pull the screw, causing the screw to rotate. The screw is not stable enough to use, so the inventor proposes a ball screw with a locking function. Utility Model Content

[0003] (1) Technical issues to be solved

[0004] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a ball screw with a locking function, aiming to solve the problem that the gravity of the object in the prior art will pull the screw, causing the screw to rotate and the screw lacks stability in use.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the utility model provides a ball screw with a locking function, including an outer rod, a lifting block, a driving mechanism and a rocking plate, wherein the outer rod is arranged vertically, a screw body is rotatably installed inside, a lifting block is installed on the screw body, the lifting block is threadedly connected to the screw body, and a rocking plate is rotatably installed on the side wall of the outer rod; a translation groove is horizontally installed on one side of the outer rod adjacent to the rocking plate, and a driving mechanism is installed inside the translation groove; the driving mechanism includes a slider, a limit rod, and a mounting ring, wherein the slider is slidably installed in the translation groove, the middle part of the slider has a mounting hole, the mounting ring is rotatably installed in the mounting hole, and a limit rod is slidably installed inside the mounting ring, and the limit rod is inserted into the inside of the outer rod. Thanks to the setting of the driving mechanism, the screw body that stops rotating can be limited, so that the screw body cannot continue to rotate, and even if an object causes pressure on the lifting block, the screw body will be firmly fixed, thereby improving the stability of the ball screw.

[0007] Preferably, the bottom of the screw body is fixedly connected to a rotating shaft, the external fixed sleeve of the rotating shaft is provided with a driven bevel gear, and a driving bevel gear is rotatably installed next to the driven bevel gear. The driving bevel gear and the driven bevel gear are vertically distributed and meshed with each other, and the rocker is connected to the driving bevel gear.

[0008] Preferably, a rotating ring is fixedly sleeved on the outer wall of the rotating shaft, and limited position insertion holes are distributed around the outer circumferential surface of the rotating ring.

[0009] Preferably, the limiting plug hole is adapted to be plugged into the limiting plug rod.

[0010] Preferably, a movable groove is horizontally opened on the outer wall of the limiting plug rod, the mounting ring is sleeved on the outside of the limiting plug rod, and a guide block is protruding from the inner wall of the mounting ring.

[0011] Preferably, a rotating shaft is protruding from the upper surface and the bottom end surface of the mounting ring, and a rotating hole adapted for the rotating shaft is provided on the inner wall of the mounting hole.

[0012] Preferably, a limiting strip is protruding from the upper surface of the sliding block, and a limiting sliding groove adapted to the limiting strip is provided on the inner wall of the translation groove.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] Thanks to the setting of the driving mechanism, the utility model can limit the rotating and stopped screw rod body, so that the screw rod body cannot continue to rotate. Even if an object causes pressure on the lifting block, the screw rod body will be firmly fixed, thereby improving the stability of the ball screw. Due to the different rotation and stopping positions of the screw rod body, the limit plug rod and the limit plug hole will be in a state of misalignment and cannot be directly plugged in. At this time, the limit plug rod is driven to move by sliding the slider, and through the rotatable setting of the mounting ring, the limit plug rod can be tilted in the slider, thereby adjusting its own posture and adapting to the limit plug hole that cannot directly correspond horizontally, thereby achieving the effect of fixing the screw rod body, improving the fixing range of the screw rod body, having a wide range of applications, and can be widely promoted. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 is a schematic diagram of the driving mechanism structure;

[0019] Figure 3 It is a schematic diagram of the internal structure of the bottom end of the outer rod;

[0020] Figure 4 for Figure 2 Enlarged structural diagram at A in the middle.

[0021] The markings in the attached drawings are: 1. outer rod; 2. lifting block; 3. screw rod body; 4. translation slot; 5. rocker; 6. limit rod; 7. moving slot; 8. mounting hole; 9. limit strip; 10. slider; 11. rotating hole; 12. driven bevel gear; 13. rotating shaft; 14. limit socket; 15. rotating ring; 16. driving bevel gear; 17. mounting ring; 18. guide block; 19. driving mechanism. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] This specific implementation is a ball screw with a locking function, and its structural diagram is as follows Figure 1 As shown, it includes an outer rod 1, a lifting block 2, a driving mechanism 19 and a rocking plate 5. The outer rod 1 is vertically arranged, and a screw rod body 3 is rotatably installed inside. The lifting block 2 is installed on the screw rod body 3, and the lifting block 2 is threadedly connected to the screw rod body 3. A rocking plate 5 is rotatably installed on the side wall of the outer rod 1; a translation groove 4 is horizontally installed on one side of the outer rod 1 adjacent to the rocking plate 5, and the driving mechanism 19 is installed inside the translation groove 4.

[0024] Reference Figure 2 The driving mechanism 19 includes a slider 10, a limit rod 6, and a mounting ring 17. The slider 10 is slidably installed in the translation groove 4. The central part of the slider 10 has a mounting hole 8. The mounting ring 17 is rotatably installed in the mounting hole 8. The limit rod 6 is slidably installed inside the mounting ring 17, and the limit rod 6 penetrates into the interior of the outer rod 1.

[0025] Reference Figure 3The bottom of the screw body 3 is fixedly connected with a rotating shaft 13, and the external fixed sleeve of the rotating shaft 13 is provided with a driven bevel gear 12, and the driving bevel gear 16 is rotatably installed beside the driven bevel gear 12. The driving bevel gear 16 and the driven bevel gear 12 are vertically distributed and meshed with each other, and the rocker 5 is connected to the driving bevel gear 16. A rotating ring 15 is fixedly sleeved on the outer wall of the rotating shaft 13, and a limited position plug hole 14 is arranged on the outer circumferential surface of the rotating ring 15. The limited position plug hole 14 is adapted to be plugged in with the limited position plug rod 6. The upper surface and the bottom end surface of the mounting ring 17 are both protruding with a rotating shaft, and the inner wall of the mounting hole 8 is provided with a rotating hole 11 adapted to the rotating shaft. A limit strip 9 is protruding from the upper surface of the slider 10, and a limit slide groove adapted to the limit strip 9 is provided on the inner wall of the translation groove 4. When the rotating shaft 13 stops rotating, the limiting rod 6 can be inserted into the limiting hole 14. After the rotating ring 15 is limited by force, it is fixed, and the screw body 3 cannot continue to rotate. Even if an object puts pressure on the lifting block 2, the screw body 3 will be firmly fixed.

[0026] Reference Figure 2 , Figure 4 A movable groove 7 is horizontally opened on the outer wall of the limiting plug rod 6, and a mounting ring 17 is sleeved on the outside of the limiting plug rod 6. A guide block 18 is protruded on the inner wall of the mounting ring 17.

[0027] Working principle: When in use, first fix the outer rod 1 at the work site, connect the lifting block 2 with the appropriate clamping assembly, the clamping assembly clamps the object, and by rotating the rocker 5, the rocker 5 drives the driving bevel gear 16 to rotate, and the driven bevel gear 12 is forced to drive the screw body 3 to rotate, and the lifting block 2 moves along the outer rod 1 to lift the object to achieve the effect of movement. When the driven bevel gear 12 is forced to rotate, it first drives the rotating shaft 13 to rotate, and then transmits the power to the screw body 3. When the rotating shaft 13 stops rotating, the limit plug rod 6 can be inserted toward the inside of the limit plug hole 14 and rotated. After the ring 15 is limited by force, it is fixed and the screw rod body 3 cannot continue to rotate. Even if an object puts pressure on the lifting block 2, the screw rod body 3 will be firmly fixed. Since the rotation and stopping positions of the screw rod body 3 are different, the limit rod 6 and the limit socket 14 will be misaligned and cannot be directly plugged in. At this time, the limit rod 6 is driven to move by sliding the slider 10, and the limit rod 6 can be tilted in the slider 10 through the rotatable setting of the mounting ring 17, thereby adjusting its own posture to adapt to the limit socket 14 that cannot directly correspond horizontally, thereby achieving the effect of fixing the screw rod body 3.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A ball screw with a locking function, comprising an outer rod (1), a lifting block (2), a driving mechanism (19) and a rocker (5), It is characterized in that The outer rod (1) is arranged vertically, and a screw rod body (3) is rotatably mounted inside, a lifting block (2) is mounted on the screw rod body (3), and the lifting block (2) is threadedly connected to the screw rod body (3), and a rocker (5) is rotatably mounted on the side wall of the outer rod (1); A translation slot (4) is horizontally mounted on one side of the outer rod (1) adjacent to the rocking plate (5), and a driving mechanism (19) is mounted inside the translation slot (4); The driving mechanism (19) comprises a slider (10), a limiting rod (6), and a mounting ring (17); the slider (10) is slidably mounted in the translation groove (4); a mounting hole (8) is provided at the center of the slider (10); the mounting ring (17) is rotatably mounted in the mounting hole (8); a limiting rod (6) is slidably mounted inside the mounting ring (17); and the limiting rod (6) penetrates into the interior of the outer rod (1).

2. A ball screw with locking function according to claim 1, It is characterized in that The bottom of the screw rod body (3) is fixedly connected to a rotating shaft (13), the outer fixed sleeve of the rotating shaft (13) is provided with a driven bevel gear (12), and a driving bevel gear (16) is rotatably installed beside the driven bevel gear (12), the driving bevel gear (16) and the driven bevel gear (12) are vertically distributed and meshed with each other, and the rocker (5) is connected to the driving bevel gear (16).

3. A ball screw with locking function according to claim 2, It is characterized in that A rotating ring (15) is fixedly sleeved on the outer wall of the rotating shaft (13), and limited insertion holes (14) are arranged on the outer circumferential surface of the rotating ring (15).

4. A ball screw with locking function according to claim 3, It is characterized in that The limiting plug hole (14) is adapted to be plugged into the limiting plug rod (6).

5. The ball screw with locking function according to claim 1, It is characterized in that A movable groove (7) is horizontally provided on the outer wall of the limiting plug rod (6), the mounting ring (17) is sleeved on the outside of the limiting plug rod (6), and a guide block (18) is protruding from the inner wall of the mounting ring (17).

6. A ball screw with locking function according to claim 5, It is characterized in that The upper surface and the bottom end surface of the mounting ring (17) are both protrudingly provided with a rotating shaft, and the inner wall of the mounting hole (8) is provided with a rotating hole (11) adapted to fit the rotating shaft.

7. The ball screw with locking function according to claim 1, It is characterized in that A limiting strip (9) is protruding from the upper surface of the sliding block (10), and a limiting sliding groove adapted to fit the limiting strip (9) is provided on the inner wall of the translation groove (4).

Images