Threaded telescopic stand column support driven by motor

Abstract

The invention relates to a threaded telescopic stand column support driven by a motor. The threaded telescopic stand column support is mainly composed of a top beam, a base, a spiral stand column, a power transmission system, a hydraulic element and a supporting motor telescopic rod. The spiral stand column comprises an outer barrel, a double-thread sleeve and an inner-layer external-thread threaded rod, and the lifting function is achieved through thread meshing. The base is connected with the lower end of the spiral stand column outer cylinder through a spherical hinge to allow the stand column to swing in multiple directions to adapt to fluctuation of the bottom plate. The power transmission system is composed of a motor, a driving gear and a driven gear, the motor is supported through a telescopic rod, the driven gear drives the double-thread sleeve to rotate, and primary and secondary stretching and retracting of the spiral stand column are achieved. The hydraulic system is installed between the external thread threaded rod and the top beam and used for supporting the top beam and providing buffering protection when the hydraulic system is subjected to overlarge pressure. The support is stable in structure, high in connecting strength and adaptability and suitable for supporting requirements under complex working conditions.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic supports, and in particular to a threaded telescopic column support driven by a motor. Background Art

[0002] Hydraulic support is the core equipment of coal mine comprehensive mining. The hydraulic support controls the extension and retraction of the column through the hydraulic system and adjusts the height of the support to adapt to the changes in the coal seam. The push device pushes the support and the conveyor forward, and the control system ensures the synchronous operation of the support. The column of the hydraulic support is one of the core components of the hydraulic support, which is responsible for supporting the top beam and transmitting the pressure of the roof. At present, the structure of the ordinary support column is simple, but the function is single, it cannot adapt to complex working conditions, and the overload protection function of the hydraulic system is not perfect. Compared with the traditional hydraulic support, the motor-driven threaded telescopic column support has strong stability, adaptability, and buffer protection; the motor-driven threaded telescopic column support has strong stability, adopts the method of internal and external thread engagement, has high connection strength, and can withstand large axial and radial forces; strong adaptability: the base and the spiral column are connected by a ball joint, allowing the column to swing in multiple directions to adapt to the ups and downs of the bottom plate; buffer protection: the hydraulic system provides buffering when the top beam is subjected to excessive pressure, extending the service life of the support. It is suitable for support needs under complex working conditions. Summary of the invention

[0003] In view of the above technical problems, the purpose of the present invention is to provide a motor-driven threaded telescopic column bracket. A hydraulic system is used for buffering between the top beam and the threaded rod to prevent the sudden excessive pressure on the top plate from causing damage to the spiral column. The column adopts the method of internal and external threads screwing together. This structure can withstand large axial and radial forces and has high connection strength. The motor is placed in the middle position between the two spiral columns, and the structure is compact to reduce the overall occupied space. In addition, the motor drives the driving gear, and the driven gear drives the middle double-threaded sleeve through the pin to rotate synchronously, thereby realizing power transmission and torque adjustment.

[0004] To achieve the above purpose, the present invention adopts the following technical solution: The present invention provides a motor-driven threaded telescopic column bracket, including a top beam, a hydraulic element, a base, a spiral column, a power transmission system, and a telescopic rod. The characteristics are: the top beam is used to support the top plate and bear the pressure from the top plate; the base is connected to the outer cylinder of the spiral column through a ball joint, allowing the column to swing in multiple directions to adapt to the ups and downs of the bottom plate; the spiral column includes an outer cylinder, a double-threaded sleeve and an inner outer-threaded threaded rod, and the lifting function is realized through threaded engagement.

[0005] The power transmission system consists of an electric motor, a driving gear and a driven gear. The electric motor is supported by a telescopic rod, and the driven gear drives the double-threaded sleeve to rotate to realize the primary and secondary telescopic of the spiral column; the hydraulic element is installed between the external threaded rod and the top beam to provide buffer protection when the top beam is subjected to excessive pressure; the telescopic rod supports the electric motor and moves up and down with the electric motor.

[0006] In the spiral column, the outer cylinder is connected to the base through a ball joint, allowing the column to swing in multiple directions. The double-threaded sleeve connected to the outer cylinder has an outer thread at its lower end that meshes with the inner thread of the outer cylinder, and an inner thread that meshes with the inner outer threaded rod. The double-threaded sleeve meshes with the inner outer threaded rod, and lifting and lowering are achieved through thread engagement. The relative rotational movement of the inner and outer threads pushes the threaded rod to move axially, thereby achieving the rise or fall of the column. The motor drives the driving gear and the driven gear to rotate, and the driven gear drives the double-threaded sleeve to rotate, and the double-threaded sleeve meshes with the inner outer threaded rod, driving the threaded rod to rise, realizing the first-level telescopic extension; the outer thread at the lower end of the double-threaded sleeve meshes with the inner thread of the outer cylinder, driving the outer threaded rod and the double-threaded sleeve to rise, realizing the second-level telescopic extension. Thread engagement can provide a sealing effect and a strong connection strength.

[0007] In the power transmission system, the motor is placed horizontally in the middle of the two spiral columns to reduce the overall space occupied. The output shaft of the motor is connected to the driving gear, which drives the driven gear to rotate. The driven gear is connected to the double-threaded sleeve through a pin to achieve force transmission. The supporting force of the motor is provided by the telescopic rod. The inner rod of the telescopic rod is fixedly connected to the motor, and the outer rod is fixedly connected to the base, which moves up and down with the motor and provides support for the motor.

[0008] In the hydraulic element, the hydraulic cylinder is fixedly connected to the external threaded rod, and the piston rod is connected to the top beam through a pin, allowing a certain angle of swing. The hydraulic oil tank is connected to the hydraulic cylinder through a hose to transfer hydraulic oil. The hose is flexibly arranged to adapt to complex spatial structures. The hydraulic system can provide buffering when the top beam is subjected to excessive pressure to prevent damage to the bracket.

[0009] Advantages of the present invention: 1. Stable structure: adopts the method of internal and external thread engagement, with high connection strength, capable of bearing large axial and radial forces; 2. Buffer protection: The hydraulic system provides buffering when the top beam is subjected to excessive pressure, thus extending the service life of the bracket; 3. Space optimization: The motor is placed in the middle of the two spiral columns, which has a compact structure and reduces the overall occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The following is a brief description of the drawings required in the example description; Figure 1 It is a schematic diagram of the overall structure of the motor-driven threaded telescopic column bracket of the present invention; Figure 2 It is a left view of the overall structure of the motor-driven threaded telescopic column bracket of the present invention; Figure 3 It is a cross-sectional schematic diagram of a single column of a threaded telescopic column bracket driven by a motor of the present invention; Figure 4 It is a three-dimensional diagram of the overall structure of the double columns of the threaded telescopic column bracket driven by the motor of the present invention; Figure 5 It is a three-dimensional view of a single column of a threaded telescopic column bracket driven by a motor of the present invention.

[0011] The following is a supplementary description of the attached drawings: Among them, 1. top beam; 2. base; 3. spiral column; 31. outer cylinder; 32. double-threaded sleeve; 33. inner outer threaded threaded rod; 4. power transmission system; 41. electric motor; 42. driving gear; 43. driven gear; 5. connecting hose; 6. hydraulic element; 61. cylinder; 62. piston rod; 7. telescopic rod; 8. oil tank. DETAILED DESCRIPTION

[0012] 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 described embodiments 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 creative work, any modifications, equivalent substitutions, improvements, etc., should be included in the protection scope of the present invention.

[0013] It should be noted that all directional indications (such as outside, inside, left, right, etc.) in the embodiments of the present invention are only used to explain the relative position relationship and movement of various components under a certain posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly. Among them, "left" corresponds to Figure 1 on the left side of the .

[0014] See also Figures 1 to 4 The motor-driven threaded telescopic column bracket of the present invention is described in detail. The motor-driven threaded telescopic column bracket of the present invention is applied to coal mining, tunnel engineering, etc.

[0015] The motor-driven threaded telescopic column bracket of the present invention includes a top beam 1, a shock-absorbing support member including a piston rod 62, a hydraulic cylinder 61, and the piston rod is fixed to the top beam through a pin, which can withstand a large load and allow relative movement within a certain range. The hydraulic cylinder 61 is fixedly connected to the external threaded rod 33, and the hydraulic cylinder is connected to the oil tank 8 through a hose 5. The hydraulic system runs smoothly and effectively reduces shock and vibration, and can automatically protect against equipment damage when overloaded. The external threaded rod 33 is screwed together with the double-threaded sleeve 32 through a thread. The lower end of the double-threaded sleeve 32 has an external thread that is screwed together with the outer internal threaded sleeve 31. The spiral structure increases the contact area and improves the load-bearing capacity. The internal threaded sleeve is connected to the base 2 by a ball joint, which has a larger load-bearing capacity and a stronger load capacity, and provides greater flexibility of movement.

[0016] The two output shafts of the motor 41 of the present invention are respectively connected to the driving gear 42, and the driven gear 43 is connected to the double-threaded sleeve 32 through a pin. The pin connection mechanism is simple, has a strong load-bearing capacity and is evenly stressed. The upper end of the telescopic rod 7 is connected to the motor and rises and falls with the motor and supports the motor.

[0017] Working principle of the present invention: The invention drives the gear transmission system through the motor to drive the double-threaded sleeve to rotate and realize the lifting and lowering of the spiral column. The hydraulic element provides buffering when the top beam is impacted, the ball joint connection between the base and the column allows the column to swing in multiple directions, and the telescopic rod provides support for the motor to ensure the stability and adaptability of the entire bracket.

Claims

1. A motor-driven threaded telescopic column support comprises a top beam (1), a base (2), a spiral column (3), a power transmission system (4), a hydraulic element (6), and a telescopic rod (7); the base (2) is connected to the lower end of the spiral column outer cylinder (31) by a ball joint; the inner layer of the spiral column outer cylinder (31) has an internal thread that meshes with the external thread at the lower end of a double-threaded sleeve (32); the relative rotation of the internal and external threads drives the threaded rod to move axially, thereby achieving ascent or descent; the inner layer thread of the double-threaded sleeve (32) meshes with the inner layer external thread of the threaded rod (33) to achieve the lifting and lowering of the spiral column; the meshing of the threads can provide a sealing effect; the external thread of the threaded rod A hydraulic element is installed between the (33) and the top beam (1), the cylinder (61) of the hydraulic element is fixedly connected to the threaded rod, and the connection between the piston rod (62) and the top beam (1) is hinged; the power transmission system (4) is the power source for lifting the spiral column, the output shaft of the motor (41) is connected to the driving gear (42), the driving gear (42) drives the driven gear (43), and the driven gear (42) is connected to the column double-threaded sleeve (32) through a pin to realize force transmission; in the power transmission system (4), the motor (41) is placed in the middle position between the two spiral columns, and the telescopic rod (7) at the lower end of the motor provides support for the motor (41).

2. A motor-driven threaded telescopic column bracket according to claim 1, characterized in that: The base (2) is connected to the bottom of the outer cylinder (31) via a ball joint. The bottom of the outer cylinder (31) of the spiral column is designed to be spherical, and a corresponding spherical groove is designed on the portion of the base that contacts the column. This connection allows the column to swing in multiple directions within a certain range to adapt to the ups and downs of the bottom plate.

3. According to claim 1, the spiral column comprises an inner layer external threaded rod (33), a double threaded sleeve (32), and an outer cylinder (31); wherein the inner layer external threaded rod (32) is fixedly connected to the cylinder of the hydraulic element, the driven gear (7) in the transmission system drives the middle sleeve (32) with the inner thread to rotate, and the double threaded sleeve (32) engages with the inner layer external threaded rod (33) to drive the external threaded rod (33) to rise to achieve primary telescopic extension; the outer thread at the lower end of the double threaded sleeve (32) engages with the inner thread of the outer cylinder (31) to drive the external threaded rod (33) and the double threaded sleeve (32) to rise to achieve secondary telescopic extension; the tooth sides of the inner and outer threads are in full contact to form a stable connection. The thread engagement can provide a strong connection strength.

4. According to the motor-driven threaded telescopic column bracket as described in claim 2, the motor (41) drives the driving gear (42) to rotate, and the driving gear (42) drives the driven gear (43) to rotate to transmit force; the driven gear (43) further drives the double-threaded sleeve (32) to rotate to realize the axial movement of the sleeve.

5. A motor-driven threaded telescopic column bracket according to claim 1, wherein the inner rod of the telescopic rod (7) connected to the motor is fixedly connected to the motor (41), and the outer rod is fixedly connected to the base (2), moves up and down with the motor (41) and has a supporting effect on the motor (41).

6. According to claim 1, a hydraulic element (6) is connected between the top beam (1) and the externally threaded rod (33) to support the top beam (1) and to provide a buffer when there is an excessive pressure shock on the top beam to prevent damage to the bracket. An oil tank is placed between the tops of the two columns. The oil tank and the cylinder are connected by a hose to transfer hydraulic oil. The hose can be arranged more flexibly to adapt to complex spatial structures.

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