Lifting machine corbel locking structure

Abstract

The utility model discloses a lifting machine corbel locking structure which comprises a base, two symmetrically-distributed rotating shafts are rotationally embedded in the base, a first straight rod is fixedly assembled on the outer surface of each rotating shaft, and a second straight rod is slidably embedded in the end, away from the corresponding rotating shaft, of each first straight rod. One end of the second straight rod, which is far away from the first straight rod, is fixedly provided with a tray, and the axis of the tray is vertical to the plane of the second straight rod. Through the designed limiting component and the touch component, the angle deflection of the corbel can be limited in one step by utilizing the limiting component in the locking process of the corbel of the lifting machine; the operation is simpler and more convenient; and meanwhile, under the action of the touch assembly, the effects of rapidly triggering limiting and stopping limiting can be achieved on the limiting assembly, the using efficiency of the lifting machine is improved, and great significance is achieved in the actual using process.

Description

Technical Field

[0001] The utility model relates to the technical field of lifts, in particular to a lifting arm locking structure. Background Art

[0002] A lift is a device used to transport objects or people vertically or nearly vertically. It usually consists of one or more vertically movable supports or arms, and a lifting device such as a hydraulic system or an electric motor. The lift can be used in various scenarios. The use of the lift can improve work efficiency and reduce manual labor. The lift arm lock is used to ensure the stability and safety of the arm during lift operation.

[0003] In the locking of lift arms, half gears are a commonly used locking mechanism. They lock the arm through the interlocking principle of gears. However, during the locking process of the half gears, it is necessary to manually adjust the locking teeth at a small angle so that the half gears fit tightly with them. Before using the locking teeth, the staff needs to rotate and adjust the angle of the locking teeth. This process is cumbersome and cannot achieve one-step locking. Utility Model Content

[0004] The purpose of the present utility model is to provide a lifting arm locking structure, which can solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lifting arm locking structure, comprising: a base, two symmetrically distributed rotating shafts are rotatably installed inside the base, a first straight rod is fixedly installed on the outer surface of each rotating shaft, and a second straight rod is slidably installed on the end of the first straight rod away from the rotating shaft, a tray is fixedly provided on the end of the second straight rod away from the first straight rod, and the axis of the tray is perpendicular to the plane of the second straight rod. The rotation of the rotating shaft drives the supporting arm to rotate as a whole, and the tray can place and support the object to be lifted.

[0006] It also includes: a limit assembly for limiting the rotation of the first straight rod, and the limit assembly is located inside the base; a touch assembly for triggering the operation of the limit assembly, and the touch assembly is located at the top of the base. The use of the limit assembly allows the support arm to be limited in one step without the need for shaking or adjustment.

[0007] Preferably, the limiting assembly includes a latch, and the latch slides axially through the top of the base, the outer surface of the latch is fixedly equipped with a support arm locking tooth, and the support arm locking tooth is close to the bottom of the latch, the outer surface of the rotating shaft is covered with a support arm half tooth, and the support arm half tooth is movably engaged with the support arm locking tooth, the latch slides up and down inside the base, thereby driving the support arm locking tooth to slide up and down, the support arm locking tooth is engaged with the support arm half tooth, and controls the locking of the lift support arm.

[0008] Preferably, the bottom of each tooth of the support arm lock tooth and the top of each tooth of the support arm half tooth are respectively fixedly equipped with a first conical tooth and a second conical tooth, and the cross-sections of the second conical tooth and the first conical tooth are both triangular. The use of the second conical tooth and the first conical tooth makes it possible for the pin to drive the support arm lock tooth and the support arm half tooth to engage more quickly.

[0009] Preferably, the touch assembly includes two shells that are symmetrically distributed and fixedly arranged on the top of the base, each of the shells is slidably equipped with a wave push rod inside, and the bottom of the wave push rod is wavy, the top of the pin is fixedly equipped with a disc, and the top of the disc is fixedly equipped with a spherical arc top block, the bottom of the disc and the top of the base are fixedly equipped with tension springs, and the tension spring is sleeved on the outside of the pin, the use of the wave push rod meets the requirement of the pin sliding up and down, the use of ribs and grooves between the shell and the wave push rod meets the requirement of the wave push rod sliding, and the use of the tension spring enables the spherical arc top block, the disc and the pin to slide up and down inside the base, directly limiting the support arm.

[0010] Preferably, a wave-shaped wave groove is provided at the bottom of the wave push rod, and a limiting groove is provided at the bottom end of the wave push rod. The cross-sections of the wave groove and the limiting groove are both fan-shaped, and the cross-sectional area of the limiting groove is larger than the cross-sectional area of the wave groove. The top of the spherical arc top block is spherical, and the top of the spherical arc top block is embedded between the wave groove and the limiting groove. The use of the wave groove is conducive to guiding the sliding of the spherical arc top block on the wave push rod. At the same time, the limiting groove can play a role in stabilizing the pin when the support arm lock tooth and the support arm half tooth are limited.

[0011] Preferably, a reinforcing rib is fixedly provided at one end of the first straight rod close to the rotating shaft. The reinforcing rib is used to reinforce the first straight rod when lifting an object, thereby preventing the first straight rod from being deformed due to excessive weight of the object.

[0012] Preferably, a silicone rubber protrusion is fixedly provided on the top of the tray. The silicone rubber protrusion can protect the contact surface between the object and the tray when the object is lifted, thereby preventing the object from being worn.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model uses the designed limit assembly and trigger assembly to utilize the limit assembly to limit the angular deflection of the support arm in one step during the locking process of the lift support arm, making the operation easier; at the same time, under the action of the trigger assembly, the limit assembly can be quickly triggered and stopped, thereby improving the use efficiency of the lift and having great significance in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a schematic diagram of the support arm lock tooth and support arm half tooth structure of the utility model;

[0018] Figure 4 For this utility model Figure 3 Enlarged view of point B in the middle;

[0019] Figure 5 This is a schematic structural diagram of the wave push rod and spherical arc top block of the utility model.

[0020] In the figure: 1. Base; 2. First straight rod; 3. Second straight rod; 4. Shell; 5. Tray; 6. Second conical tooth; 7. Rotating shaft; 8. Wave push rod; 9. Wave groove; 10. Limiting groove; 11. Spherical arc top block; 12. Disc; 13. Tension spring; 14. Latch; 15. Support arm lock tooth; 16. Support arm half tooth; 17. First conical tooth. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 - Figure 5The lifting arm locking structure includes: a base 1, two symmetrically distributed rotating shafts 7 are installed inside the base 1, and the outer surface of each rotating shaft 7 is fixedly equipped with a first straight rod 2, and the second straight rod 3 is slidably installed on the end of the first straight rod 2 away from the rotating shaft 7, and a tray 5 is fixed on the end of the second straight rod 3 away from the first straight rod 2, and the axis of the tray 5 is perpendicular to the plane of the second straight rod 3. The rotation of the rotating shaft 7 drives the supporting arm to rotate as a whole, and the tray 5 can place and support the object to be lifted.

[0023] It also includes: a limiting component for limiting the rotation of the first straight rod 2, and the limiting component is located inside the base 1;

[0024] The touch component is used to trigger the operation of the limit component. The touch component is located at the top of the base 1. The use of the limit component allows the arm to be limited in one step without shaking or adjusting. The touch component can quickly trigger the limit component and stop.

[0025] The limiting assembly includes a latch 14, and the latch 14 slides axially through the top of the base 1. The outer surface of the latch 14 is fixedly equipped with a support arm locking tooth 15, and the support arm locking tooth 15 is close to the bottom of the latch 14. The outer surface of the rotating shaft 7 is covered with a support arm half tooth 16, and the support arm half tooth 16 is movably engaged with the support arm locking tooth 15. The latch 14 slides up and down inside the base 1, thereby driving the support arm locking tooth 15 to slide up and down. The support arm locking tooth 15 is engaged with the support arm half tooth 16, so that the rotation of the rotating shaft 7 is restricted, thereby controlling the locking of the lift support arm.

[0026] The bottom of each tooth of the support arm lock tooth 15 and the top of each tooth of the support arm half tooth 16 are respectively fixedly equipped with a first conical tooth 17 and a second conical tooth 6. The cross-sections of the second conical tooth 6 and the first conical tooth 17 are both triangular. The use of the second conical tooth 6 and the first conical tooth 17 makes it possible for the latch 14 to drive the support arm lock tooth 15 and the support arm half tooth 16 to engage more quickly without the need for manual intervention and adjustment.

[0027] The touch assembly includes two shells 4 symmetrically distributed and fixedly arranged on the top of the base 1. A wave push rod 8 is slidably assembled inside each shell 4, and the bottom of the wave push rod 8 is wavy. The top of the pin 14 is fixedly assembled with a disc 12, and the top of the disc 12 is fixedly provided with a spherical arc top block 11. The bottom of the disc 12 and the top of the base 1 are fixedly assembled with a tension spring 13, and the tension spring 13 is sleeved on the outside of the pin 14. The use of the wave push rod 8 meets the requirement of the pin 14 sliding up and down. The use of ribs and grooves between the shell 4 and the wave push rod 8 meets the requirement of the wave push rod 8 sliding. Through the use of the tension spring 13, the spherical arc top block 11, the disc 12 and the pin 14 are slid up and down inside the base 1, thereby directly limiting the support arm, avoiding the need to manually rotate the pin 14 for limiting, and making operation easier.

[0028] A wave-shaped wave groove 9 is provided at the bottom of the wave push rod 8, and a limiting groove 10 is provided at the bottom end of the wave push rod 8. The cross-sections of the wave groove 9 and the limiting groove 10 are both fan-shaped, and the cross-sectional area of the limiting groove 10 is larger than the cross-sectional area of the wave groove 9. The top of the spherical arc top block 11 is spherical, and the top of the spherical arc top block 11 is embedded between the wave groove 9 and the limiting groove 10. The use of the wave groove 9 is conducive to guiding the sliding of the spherical arc top block 11 on the wave push rod 8. At the same time, the limiting groove 10 can play the role of a stabilizing pin 14 when the support arm lock tooth 15 and the support arm half tooth 16 are limited, so that the locking of the lift support arm is more stable.

[0029] A reinforcing rib is fixedly provided at one end of the first straight rod 2 close to the rotating shaft 7. The reinforcing rib is used to reinforce the first straight rod 2 when lifting an object, thereby preventing the first straight rod 2 from being deformed due to the excessive weight of the object.

[0030] A silicone rubber protrusion is fixedly provided on the top of the tray 5. The silicone rubber protrusion can protect the contact surface between the object and the tray 5 when the object is lifted, thereby preventing the object from being worn.

[0031] Working principle:

[0032] The bottom of the wave push rod 8 is wavy, which is conducive to the up and down sliding of the latch 14. The height difference of the wave push rod 8 causes the latch 14 to slide up and down. The wave groove 9 at the bottom of the wave push rod 8 and the top of the spherical arc top block 11 are spherical, which promotes close contact between the spherical arc top block 11 and the wave push rod 8, thereby preventing the spherical arc top block 11 from deviating during movement. The use of the limit groove 10 plays a stabilizing role in the limit assembly when limiting. The disc 12 fixed at the bottom of the spherical arc top block 11 is acted upon by the tension spring 13, so that the disc 12 can drive the latch 14 to slide up and down inside the base 1. When the limit assembly is not limited by the latch 14, the tension spring 13 prevents the latch 14 from falling due to its own gravity.

[0033] The latch 14 and the support arm locking teeth 15 on the outer surface of the latch 14 slide downward due to the trigger component, and at the same time, the support arm locking teeth 15 and the support arm half teeth 16 engage with each other, so that the first straight rod 2 is locked and accidents caused by the shaking of the first straight rod 2 during the lifting process are avoided. The support arm half teeth 16 are fixed to the first straight rod 2 by bolts, so that the support arm half teeth 16 also rotate synchronously when the first straight rod 2 rotates, meeting the requirement that the first straight rod 2 can be locked when adjusted to any angle. The first pointed cone gearing 17 and the second pointed cone gearing 6 at the bottom of the support arm locking teeth 15 and the top of the support arm half teeth 16 do not require small angle adjustment of the support arm locking teeth 15 and the support arm half teeth 16 when engaging. During the process of the support arm locking teeth 15 sliding downward, the first pointed cone gearing 17 and the second pointed cone gearing 6 can guide the engagement of the support arm locking teeth 15 and the support arm half teeth 16, which simplifies the operation of the staff and makes the operation more simple and efficient.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include" or "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The lifting arm locking structure is characterized by: include: A base (1), wherein the base (1) is internally rotatably mounted with two symmetrically distributed rotating shafts (7), the outer surface of each rotating shaft (7) is fixedly mounted with a first straight rod (2), and a second straight rod (3) is slidably mounted on an end of the first straight rod (2) away from the rotating shaft (7), a tray (5) is fixedly mounted on an end of the second straight rod (3) away from the first straight rod (2), and the axis of the tray (5) is perpendicular to the plane of the second straight rod (3); Also includes: A limiting assembly, used for limiting the rotation of the first straight rod (2), the limiting assembly being located inside the base (1); A trigger component is used to trigger the operation of the limit component, and the trigger component is located on the top of the base (1).

2. The lifting arm locking structure according to claim 1, characterized in that: The limiting assembly includes a latch (14), and the latch (14) axially slides through the top of the base (1), the outer surface of the latch (14) is fixedly equipped with a support arm lock tooth (15), and the support arm lock tooth (15) is close to the bottom of the latch (14), and the outer surface of the rotating shaft (7) is covered with a support arm half tooth (16), and the support arm half tooth (16) is movably engaged with the support arm lock tooth (15).

3. The lifting arm locking structure according to claim 2, characterized in that: The bottom of each tooth of the support arm lock tooth (15) and the top of each tooth of the support arm half tooth (16) are respectively fixedly equipped with a first pointed cone tooth (17) and a second pointed cone tooth (6), and the cross sections of the second pointed cone tooth (6) and the first pointed cone tooth (17) are both triangular.

4. The lifting arm locking structure according to claim 2, characterized in that: The touch assembly comprises two shells (4) symmetrically distributed and fixedly arranged on the top of the base (1); a wave push rod (8) is slidably mounted inside each shell (4), and the bottom of the wave push rod (8) is wavy; a disc (12) is fixedly mounted on the top of the latch (14); a spherical arc top block (11) is fixedly mounted on the top of the disc (12); a tension spring (13) is fixedly mounted on the bottom of the disc (12) and the top of the base (1), and the tension spring (13) is sleeved on the outside of the latch (14).

5. The lifting arm locking structure according to claim 4, characterized in that: The bottom of the wave push rod (8) is provided with a wave-shaped wave groove (9), and the bottom end of the wave push rod (8) is provided with a limit groove (10). The cross-sections of the wave groove (9) and the limit groove (10) are both fan-shaped, and the cross-sectional area of the limit groove (10) is larger than the cross-sectional area of the wave groove (9). The top of the spherical arc top block (11) is spherical, and the top of the spherical arc top block (11) is embedded between the wave groove (9) and the limit groove (10).

6. The lifting arm locking structure according to claim 1, characterized in that: A reinforcing rib is fixedly provided at one end of the first straight rod (2) close to the rotating shaft (7).

7. The lifting arm locking structure according to claim 1, characterized in that: A silicone rubber protrusion is fixedly provided on the top of the tray (5).

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