Anti-reversion lifting table screw rod

Abstract

The utility model discloses an anti-reversal lifting table lead screw, and relates to the technical field of lifting table lead screws, the anti-reversal lifting table lead screw comprises a first table leg and a second table leg, the first table leg is sleeved on the outer wall of the second table leg, the inside of the second table leg is in threaded connection with a lead screw, one end of the lead screw is rotatably connected inside the first table leg, and the other end of the lead screw is rotatably connected inside the second table leg. The top of the second table leg is fixedly provided with a locking assembly, the locking assembly comprises a rotating rod and a contact end, the locking assembly used for locking the lead screw is arranged on the second table leg, when the table is used, the electric cylinder can push the rotating rod, the contact end at the top of the rotating rod is clamped into a threaded groove of the lead screw, and the rotating rod can be locked through the locking assembly; the lead screw is supported by the contact end, when the lead screw is pressed, the lead screw can be prevented from reversing, and therefore the function of determining the height of the lifting table is achieved.

Description

Technical Field

[0001] This utility model relates to the field of lifting table lead screw technology, and in particular to an anti-reverse lifting table lead screw. Background Technology

[0002] The screw jack is one of the core components of the screw jack for lifting tables. The screw is engraved with spiral teeth, and the nut has a spiral groove that matches the screw thread. When the screw rotates, the nut will move linearly along the axial direction of the screw, thereby realizing the lifting function.

[0003] For example, the public disclosure of a full-color 3D printer includes a support platform, an X-axis guide rail, a Y-axis guide rail, a Z-axis guide rail, a printing platform, a lifting platform, a drive screw, a printing nozzle, a photopolymerization device, a support plate, a first material trough, a second material trough, a third material trough, a fourth material trough, a feeding guide tube, a UV lamp, a light intensity adjustment device, several micro nozzles, several longitudinal baffles, and transverse baffles.

[0004] However, in the existing technology, the lead screw used to adjust the height is subjected to pressure from the table itself during rotation. Since the threaded groove on the lead screw is in an inclined state, when the pressure exerted by the lifting table on the lead screw is too great, the lead screw is prone to reverse under the pressure. Over time, this will cause the lifting table to slowly lower. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that when the pressure exerted on the lead screw by the lifting table is too great, the lead screw is prone to reverse rotation under the pressure, and the lifting table will slowly lower over time. Therefore, this invention proposes an anti-reverse lifting table lead screw.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an anti-reverse lifting table screw rod, comprising a first table leg and a second table leg, wherein the first table leg is sleeved on the outer wall of the second table leg, and a screw rod is threadedly connected to the inside of the second table leg, one end of the screw rod being rotatably connected to the inside of the first table leg, and a locking component being fixedly installed on the top of the second table leg;

[0007] The locking assembly includes a rotating rod and a contact end. An electric cylinder is fixedly installed inside the second table leg. One end of the piston rod of the electric cylinder is rotatably connected to one end of the rotating rod. The contact end is fixedly installed on the other end of the rotating rod. The rotating rod is located on both sides of the lead screw.

[0008] Preferably, a positioning protrusion is fixedly installed on the upper surface of the second table leg, and the positioning protrusion is located between the rotating rod and the lead screw.

[0009] Preferably, notches are provided on both sides of the positioning protrusion.

[0010] Preferably, the positioning protrusion is rotatably connected to a connecting rod via a notch.

[0011] Preferably, the other end of the connecting rod is rotatably connected to one side of the rotating rod.

[0012] Preferably, the connection point between the connecting rod and the rotating rod is located at the midpoint of the rotating rod.

[0013] Preferably, the piston rod of the electric cylinder passes through the top of the second table leg, and a through hole is provided at the junction of the second table leg and the piston rod.

[0014] Preferably, a limiting groove is provided at the junction of the rotating rod and the electric cylinder piston rod, and the limiting groove extends through the corner on one side of the rotating rod.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this utility model, by setting a locking component for locking the lead screw on the second table leg, when in use, the electric cylinder can push the rotating rod to engage the contact end at its top into the threaded groove of the lead screw, using the contact end to support the lead screw. When the lead screw is under pressure, it can prevent the lead screw from reversing, thereby determining the height of the lifting table.

[0017] 2. In this utility model, a positioning protrusion is provided on the second table leg, and a connecting rod is rotatably connected between the positioning protrusion and the rotating rod. The connecting rod can determine the rotation center of the rotating rod, so as to ensure that the contact end of the top of the rotating rod can be engaged in the threaded groove, thus ensuring the structural stability of the entire locking assembly. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of an anti-reverse lifting table lead screw is provided for this utility model;

[0019] Figure 2 This utility model provides a three-dimensional structural diagram of the second table leg of an anti-reverse lifting table lead screw;

[0020] Figure 3 This utility model provides a schematic diagram of the second table leg structure of an anti-reverse lifting table lead screw;

[0021] Figure 4 This utility model provides a schematic diagram of the connection and structure of the electric cylinder and rotating rod of the anti-reverse lifting table lead screw.

[0022] Legend: 1. First table leg; 2. Second table leg; 3. Locking assembly; 4. Lead screw; 31. Positioning protrusion; 32. Notch; 33. Connecting rod; 34. Rotating rod; 35. Electric cylinder; 36. Through hole; 37. Contact end; 38. Limiting groove. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides an anti-reverse lifting table screw rod, including a first table leg 1 and a second table leg 2. The first table leg 1 is sleeved on the outer wall of the second table leg 2. The second table leg 2 is internally threaded with a screw rod 4. A locking component 3 is fixedly installed on the top of the second table leg 2.

[0026] The locking assembly 3 includes a rotating rod 34 and a contact end 37. An electric cylinder 35 is fixedly installed inside the second table leg 2. One end of the piston rod of the electric cylinder 35 is rotatably connected to one end of the rotating rod 34. The contact end 37 is fixedly installed on the other end of the rotating rod 34. The rotating rod 34 is located on both sides of the lead screw 4.

[0027] The piston rod of the electric cylinder 35 passes through the top of the second table leg 2. A through hole 36 is provided at the junction of the second table leg 2 and the piston rod. A limiting groove 38 is provided at the junction of the rotating rod 34 and the piston rod of the electric cylinder 35. The limiting groove 38 passes through the corner on one side of the rotating rod 34.

[0028] The specific settings and functions of this embodiment are described below. The locking component 3 is used to prevent the lead screw from reversing. One end of the lead screw 4 is fixedly connected to the power source inside the lifting table. The rotation of the lead screw 4 will push the second table leg 2 out from the inside of the first table leg 1 through the thread.

[0029] After the lead screw 4 stops rotating, the locking assembly 3 is immediately activated. The electric cylinder 35 pushes the rotating rod 34 to rotate upward, so that the contact end 37 at the top of the rotating rod 34 is engaged in the thread groove on the surface of the lead screw 4 to prevent the lead screw 4 from reversing. The electric cylinder 35 can also support the rotating rod 34 to ensure that the rotating rod 34 can exert pressure on the lead screw 4, thereby increasing the coefficient of friction.

[0030] The electric cylinder 35 is installed inside the second table leg 2. A through hole 36 for the piston rod of the electric cylinder 35 to enter and exit is provided on the top of the second table leg 2. A limit groove 38 is provided at the corner of the bottom of the rotating rod 34. During the rotation of the rotating rod 34, the existence of the limit groove 38 can ensure that the rotating rod 34 will not be blocked by the piston rod and can rotate normally.

[0031] Example 2: Figure 2 and Figure 3 As shown, a positioning protrusion 31 is fixedly installed on the upper surface of the second table leg 2. The positioning protrusion 31 is located between the rotating rod 34 and the lead screw 4. Notches 32 are provided on both sides of the positioning protrusion 31. The positioning protrusion 31 is rotatably connected to the connecting rod 33 through the notches 32. The other end of the connecting rod 33 is rotatably connected to one side of the rotating rod 34. The connection point between the connecting rod 33 and the rotating rod 34 is located at the midpoint of the rotating rod 34.

[0032] The overall effect of this embodiment is that the positioning protrusion 31 is installed on the upper surface of the second table leg 2, specifically between the lead screw 4 and the rotating rod 34. During the process of the electric cylinder 35 pushing the rotating rod 34 upward, the rotating rod 34 will drive the connecting rod 33, and the other end of the connecting rod 33 is rotatably connected to the positioning protrusion 31. Thus, the rotation center of the rotating rod 34 can be determined. The notch 32 provided on the positioning protrusion 31 ensures that the rotating rod 34 has sufficient rotation space.

[0033] The usage and working principle of this device are as follows: The locking component 3 is used to prevent the lead screw from reversing. One end of the lead screw 4 is fixedly connected to the power source inside the lifting table. When in use, the power source inside the lifting table drives the lead screw 4, and the threads on the outer wall of the lead screw 4 are used to push the second table leg 2 to move downward. The second table leg 2 extends out from the inside of the first table leg 1, thereby achieving the purpose of lifting.

[0034] After the lead screw 4 stops rotating, the electric cylinder 35 pushes the rotating rod 34 upward, causing the rotating rod 34 to rotate around the connection point between the connecting rod 33 and the positioning protrusion 31 as the center. Finally, the top contact end 37 is engaged in the threaded groove on the surface of the lead screw 4 to prevent the lead screw 4 from reversing. The electric cylinder 35 can also support the rotating rod 34 to ensure that the rotating rod 34 can exert pressure on the lead screw 4, thereby increasing the coefficient of friction.

[0035] During the rotation of the rotating rod 34, the limiting groove 38 set at its bottom corner can prevent the piston rod from affecting the rotation of the rotating rod 34.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A reverse-rotation lifting table screw, comprising a first table leg (1) and a second table leg (2), wherein the first table leg (1) is sleeved on the outer wall of the second table leg (2), characterized in that: The second table leg (2) is internally connected to a screw rod (4) via a nut thread. One end of the screw rod (4) is rotatably connected to the inside of the first table leg (1). A locking component (3) is fixedly installed on the top of the second table leg (2). The locking assembly (3) includes a rotating rod (34) and a contact end (37). An electric cylinder (35) is fixedly installed inside the second table leg (2). One end of the piston rod of the electric cylinder (35) is rotatably connected to one end of the rotating rod (34). The contact end (37) is fixedly installed on the other end of the rotating rod (34). The rotating rod (34) is located on both sides of the lead screw (4).

2. The anti-reverse lifting table screw according to claim 1, characterized in that: A positioning protrusion (31) is fixedly installed on the upper surface of the second table leg (2), and the positioning protrusion (31) is located between the rotating rod (34) and the lead screw (4).

3. The anti-reverse lifting table screw according to claim 2, characterized in that: The positioning protrusion (31) has notches (32) on both sides.

4. The anti-reverse lifting table screw according to claim 3, characterized in that: The positioning protrusion (31) is rotatably connected to the connecting rod (33) through the notch (32).

5. The anti-reverse lifting table screw according to claim 4, characterized in that: The other end of the connecting rod (33) is rotatably connected to one side of the rotating rod (34).

6. The anti-reverse lifting table screw according to claim 5, characterized in that: The connection point between the connecting rod (33) and the rotating rod (34) is located at the midpoint of the rotating rod (34).

7. The anti-reverse lifting table screw according to claim 1, characterized in that: The piston rod of the electric cylinder (35) passes through the top of the second table leg (2), and a through hole (36) is provided at the junction of the second table leg (2) and the piston rod.

8. The anti-reverse lifting table screw according to claim 1, characterized in that: A limiting groove (38) is provided at the junction of the rotating rod (34) and the piston rod of the electric cylinder (35), and the limiting groove (38) passes through the corner on one side of the rotating rod (34).

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