Coal mine underground supporting equipment and multi-point electric supporting device

Abstract

The invention provides a multi-point electric supporting device. The multi-point electric supporting device comprises a base used for ground supporting and a top beam which is opposite to the base and can be arranged close to and away from the base. A main drive telescopic cylinder pushing the base and the top beam to be close to or away from each other is arranged between the base and the top beam, an auxiliary supporting device for conducting balance supporting on the top beam is further arranged between the base and the top beam, and the auxiliary supporting device comprises a telescopic supporting column and a multi-connecting-rod balance mechanism which are arranged on the periphery of the base and the periphery of the top beam. When the top beam and the base are relatively supported, the top beam is supported in an auxiliary mode through the auxiliary supporting device, the telescopic supporting column provides supporting force in the stretching and retracting process of the main drive telescopic cylinder, the stability of the main drive telescopic cylinder in the working process is improved under the lifting conditions of different working conditions, and meanwhile the multi-connecting-rod balance mechanism provides a third supporting point for the top beam and the base. And the protection capability in the supporting process of the top beam and the base is further provided. The invention further provides underground coal mine supporting equipment.

Description

Technical Field

[0001] This invention relates to the field of underground coal mine equipment technology, and more specifically, to an underground coal mine support equipment and a multi-point electric support device. Background Technology

[0002] As mining development places increasing demands on equipment, traditional hydraulic cylinders have shortcomings such as limited energy-saving potential, low control precision, and imbalance between supply and demand flow, which have lagged behind the general trend of intelligent equipment development.

[0003] Traditional hydraulic supports utilize hydraulic cylinder systems, which present several problems: First, energy efficiency is limited as hydraulic cylinder systems have low utilization rates of emulsions, potentially leading to energy waste. Second, precise control of extension and retraction is impossible, as this depends on external conditions such as hydraulic oil temperature, pressure, and flow rate, making precise control difficult. Third, a high degree of supply-demand balance is required; the oil supply and demand of the hydraulic cylinder system typically need careful matching, otherwise, system efficiency may decrease or even damage the equipment. Fourth, hydraulic system leaks are environmentally unfriendly; the hydraulic medium, primarily emulsion, has relatively low viscosity and is prone to leakage under impact and heavy loads, causing environmental pollution. Fifth, the system requires numerous supporting devices, such as emulsion pump stations, oil tanks, and pipelines, making the entire system complex. Summary of the Invention

[0004] In view of this, the present invention provides a multi-point electric support device to optimize the support performance of underground coal mine support equipment; the present invention also provides an underground coal mine support equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A multi-point electric support device includes a base for ground support, a top beam arranged opposite to the base and accessible to and away from the base;

[0007] A main drive telescopic cylinder is provided between the base and the top beam to push them closer or further apart.

[0008] An auxiliary support device for balancing the top beam is also provided between the base and the top beam. The auxiliary support includes a telescopic support column and a multi-link balancing mechanism arranged on the outer periphery of the base and the top beam.

[0009] Preferably, in the above-mentioned multi-point electric support support device, the main drive telescopic cylinder is an electrically driven telescopic cylinder, the support end of the electrically driven telescopic cylinder is connected to the middle of the base, and the extension end of the electrically driven telescopic cylinder is connected to the top beam;

[0010] The retractable support column and the multi-link balancing mechanism are both arranged on the same side edge of the base and the top beam.

[0011] Preferably, in the above-mentioned multi-point electric support device, the telescopic support column is arranged on the inner side near the main drive telescopic cylinder, and the two ends of the telescopic support column in the telescopic direction are respectively hinged to the top beam and the base.

[0012] Preferably, in the above-mentioned multi-point electric support device, a shield beam extends from the top beam, and the multi-link balance mechanism includes a support rod connecting the middle part of the shield beam to the base, and a connecting rod connecting the extended end of the shield beam to the edge of the base;

[0013] The multi-link balancing mechanism is located away from the main drive telescopic cylinder.

[0014] Preferably, in the above-mentioned multi-point electric support support device, the multi-link balance mechanism includes multiple sets of the support rods and the connecting rods arranged in parallel, and the support end of the telescopic support column is arranged between two adjacent support rods.

[0015] Preferably, in the above-mentioned multi-point electric support device, the main drive telescopic cylinder is a parallel electric cylinder in which the motor part and the cylinder body part are arranged in parallel.

[0016] Preferably, in the above-mentioned multi-point electric support device, a first pin is provided between the extended end of the parallel electric cylinder and the top beam to provide rotational support for it.

[0017] And / or, a second pin is provided between the support end of the parallel electric cylinder and the base to provide rotational support for it.

[0018] Preferably, in the above-mentioned multi-point electric support device, the rotation directions of the first pin and the second pin are arranged parallel to the extension direction of the multi-link balance mechanism.

[0019] Preferably, in the above-mentioned multi-point electric support device, the electric drive telescopic cylinder includes a first electric drive telescopic cylinder and a second electric drive telescopic cylinder arranged in parallel.

[0020] The first electrically driven telescopic cylinder and the second electrically driven telescopic cylinder are located on the same side of the telescopic support column and the multi-link balance mechanism.

[0021] A coal mine underground support device includes a support frame for lifting and supporting underground coal mine equipment, wherein the support frame is a multi-point electric support device as described in any of the above.

[0022] The multi-point electric support device provided by this invention includes a base for ground support and a top beam positioned opposite the base and movable towards or away from it. A main drive telescopic cylinder is installed between the base and the top beam to push them closer or further apart. An auxiliary support device is also installed between the base and the top beam to provide balanced support for the top beam. The auxiliary support includes a telescopic support column and a multi-link balancing mechanism arranged around the outer periphery of the base and the top beam. The multi-point electric support device is directly driven by the main drive telescopic cylinder to move the top beam and base closer and further apart, enabling support operations in underground coal mine equipment. When the top beam and base are supported relative to each other, the auxiliary support device provides supplementary support to the top beam. The telescopic support column provides support force during the extension and retraction of the main drive telescopic cylinder, improving the stability of the main drive telescopic cylinder during operation under different lifting conditions. Simultaneously, the multi-link balancing mechanism provides a third support point for the top beam and base, further enhancing protection during the support process. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural schematic diagram of the multi-point electric support device provided by the present invention. Detailed Implementation

[0025] This invention discloses a multi-point electric support device, which optimizes the support performance of underground coal mine support equipment; this invention also provides an underground coal mine support equipment.

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1 As shown, Figure 1 This is a structural schematic diagram of the multi-point electric support device provided by the present invention.

[0028] This application provides a multi-point electric support device, including a base 1 for ground support, and a top beam 2 arranged opposite to the base 1 and able to approach or move away from the base 1; a main drive telescopic cylinder 3 is provided between the base 1 and the top beam 2 to push them closer or further apart; an auxiliary support device is also provided between the base 1 and the top beam 2 to provide balanced support for the top beam 2, and the auxiliary support includes a telescopic support column 4 and a multi-link balance mechanism 5 arranged at the ends of the base 1 and the top beam 2.

[0029] The multi-point electric support device directly drives the top beam 2 and the base 1 to move closer and further away from each other by the main drive telescopic cylinder 3, realizing the support operation in underground coal mine equipment. When the top beam 2 and the base 1 are supported relative to each other, the top beam is supported by an auxiliary support device. The telescopic support column 4 provides support force during the extension and retraction of the main drive telescopic cylinder 3, improving the stability of the main drive telescopic cylinder 3 during operation under different working conditions. At the same time, the multi-link balance mechanism 5 provides a third support point for the top beam 2 and the base 1, further providing protection during the support process of the top beam 2 and the base 1.

[0030] In a specific embodiment of this case, the main drive telescopic cylinder 3 is an electrically driven telescopic cylinder. The supporting end of the electrically driven telescopic cylinder is connected to the middle of the base 1, and the extended end of the electrically driven telescopic cylinder is connected to the top beam 2. The telescopic support column 4 and the multi-link balance mechanism 5 are both arranged on the same side edge of the base 1 and the top beam 2. The base 1 and the top beam 2 are both plate-shaped support structures with a certain length. In this embodiment, preferably, the two ends of the telescopic direction of the main drive telescopic cylinder 3 are respectively arranged in the middle of the base 1 and the top beam 2. When supporting the underground equipment in the coal mine, the base 1 and the top beam 2 can provide stable support in the supporting direction. At the same time, in order to avoid the sliding misalignment of the top beam 2 and the supported equipment when a bending moment is generated in the supporting direction, an auxiliary support device is used to pull the balance position of the top beam 2 to ensure the stability of the support structure. During the lifting and lowering of the top beam 2, as the main drive telescopic cylinder 3 rises or falls, the multi-link balance mechanism 5 assists in adjusting the posture of the top beam 2 to ensure its horizontal state. After the support is in place, it works with the main drive telescopic cylinder 3 to provide support force, ensuring the support effect of the top beam. Since the telescopic support column 4 is used to provide auxiliary support for the top beam and the base, the multi-link balance mechanism 5 adjusts the support height of the telescopic support column 4, setting the support points of both at the same edge of the base 1 and the top beam 2. Preferably, the telescopic support column 4 and the multi-link balance mechanism 5 are set at one end of the length direction of the top beam 2 and the base 1. Through traction and support on the same side, the balance of the top beam 2 can be supported in a timely manner. When the top beam 2 is supported by the main drive telescopic cylinder 3, the telescopic support column 4 can provide auxiliary support force for the top beam 2. When the top beam 2 is affected by the offset of the support position or by the bending moment, the multi-link balance mechanism 5 can also provide support points for the tilting or pressing of the top beam 2 in a timely manner, so as to facilitate the adjustment of the telescopic length and support force of the main drive telescopic cylinder 3 and the telescopic support column 4.

[0031] Preferably, the telescopic support column 4 is an electric support column with a multi-stage telescopic structure, which can realize single-stage, double-stage or multi-stage telescopic movement, providing support force for the top beam and base while realizing uniform speed, variable speed and other multi-condition lifting and lowering during the process of the top beam being raised or lowered.

[0032] In a preferred embodiment of this invention, the retractable support column 4 is arranged on the inner side near the main drive telescopic cylinder 2, and the two ends of the retractable support column 4 in the telescopic direction are respectively hinged to the top beam 2 and the base 1. The multi-point electric support device is used in environments such as underground coal mines. The main drive telescopic cylinder 3 and the retractable support column 4 are arranged below the top beam 2, and the multi-link balance mechanism 5 is located on the outermost layer. Compared with the multi-link balance mechanism 5, the retractable support column 4 is located on the inner side of the support equipment near the main drive telescopic cylinder 3. The multi-link balance mechanism 5 is arranged on the outermost layer, which to a certain extent reduces the dust falling directly onto the main drive telescopic cylinder 3 and the retractable support column 4 during the support process, thus providing a certain degree of protection.

[0033] In a specific embodiment of this case, a protective beam 6 extends from the top beam 2. The multi-link balancing mechanism 5 includes a support rod 51 connecting the middle of the protective beam 6 to the base, and a connecting rod 52 connecting the extended end of the protective beam 6 to the edge of the base 1. The multi-link balancing mechanism 5 is arranged away from the main drive telescopic cylinder 3. Using the protective beam 6, the multi-link balancing mechanism is formed by the protective beam 6, the support rod 51, and the connecting rod 52. It is connected to the base 1 via the support rod 51 and the connecting rod 52 to form a four-bar linkage. The protective beam 6 provides protection for the cylinder below the top beam 2 and also provides auxiliary support for the multi-link balancing mechanism 5. The multi-link balancing mechanism formed by the protective beam 6 provides opening and retraction of the protective beam 6, protecting the cylinder structure between the top beam 2 and the base 1. Simultaneously, the multi-link balancing mechanism formed by the protective beam, in conjunction with the main drive telescopic cylinder and the electric support column, provides support force to the top beam, ensuring overall safety and support capacity.

[0034] In a specific embodiment of this case, the multi-link balancing mechanism 5 includes multiple sets of support rods 51 and connecting rods 52 arranged in parallel, with the support end of the telescopic support column 4 arranged between two adjacent support rods 51. Utilizing the structure of the top beam 2 and the base 1 having a certain width in the width direction, the connecting rods 52 and support rods 51 of the multi-link balancing mechanism 5 are arranged in multiple sets in parallel, preferably two sets, so that the multi-link balancing mechanism 5 achieves multi-point support in the width direction, further improving support stability.

[0035] In a specific embodiment of this case, the main drive telescopic cylinder 3 is an electrically driven telescopic cylinder, further employing a parallel electric cylinder with the motor part 32 and the cylinder body part 31 arranged in parallel. The motor part 32 is preferably an axial flux motor. The parallel electric cylinder occupies less space; the motor part and cylinder body part are installed parallel to each other and connected to the transmission screw of the electric cylinder via a synchronous belt and synchronous pulley. This design results in a shorter overall length of the electric cylinder, making it particularly suitable for use in space-constrained environments. The use of a synchronous belt not only improves the smoothness and continuity of the motion but also enhances the service life of the entire system.

[0036] In one specific embodiment of this case, a first pin is provided between the extended end of the parallel electric cylinder and the top beam 2 to provide rotational support; a second pin is provided between the supporting end of the parallel electric cylinder and the base 1 to provide rotational support. The extended end and supporting end of the main drive telescopic cylinder 3 can both be hinged, or one end can be hinged while the other end is fixedly connected. By using a hinged structure at both ends of the first and second pins, or a single-sided hinged structure of either the first or second pin, position adjustment during the extension or retraction of the top beam can be achieved, improving the adaptability of the support for underground equipment in coal mines.

[0037] In the preferred structure, the rotation direction of the first and second pins is the same as the extension direction of the multi-link balancing mechanism.

[0038] In one specific embodiment of this case, the electrically driven telescopic cylinder includes a first electrically driven telescopic cylinder and a second electrically driven telescopic cylinder arranged in parallel.

[0039] The first and second electrically driven telescopic cylinders are located on the same side of the telescopic support column and the multi-link balance mechanism. Two electrically driven telescopic cylinders are arranged in parallel along the width of the base and top beam. During telescopic movement, they provide two-point support in the width direction, ensuring the stability of the support structure in that direction. A hinged structure is used in the length direction, allowing for adaptive adjustment of the support position and angle to meet the equipment support requirements in the well.

[0040] Based on the multi-point electric support device provided in the above embodiments, the present invention also provides a coal mine underground support equipment, including a support bracket for lifting and supporting underground coal mine equipment, wherein the support bracket provided on the coal mine underground support equipment is the multi-point electric support device provided in the above embodiments.

[0041] Since the underground support equipment in this coal mine adopts the multi-point electric support device described in the above embodiment, please refer to the above embodiment for the beneficial effects brought by the multi-point electric support device in the underground support equipment in this coal mine.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-point electrically powered support device, characterized in that, Includes a base for ground support, and a top beam arranged opposite to and near the base; A main drive telescopic cylinder is provided between the base and the top beam to push them closer or further apart. An auxiliary support device for balancing the top beam is also provided between the base and the top beam. The auxiliary support includes a telescopic support column and a multi-link balancing mechanism arranged at the ends of the base and the top beam.

2. The multi-point electric support device according to claim 1, characterized in that, The main drive telescopic cylinder is an electrically driven telescopic cylinder. The support end of the electrically driven telescopic cylinder is connected to the middle of the base, and the extension end of the electrically driven telescopic cylinder is connected to the top beam. The retractable support column and the multi-link balancing mechanism are both arranged on the same side edge of the base and the top beam.

3. The multi-point electric support device according to claim 2, characterized in that, The retractable support column is arranged on the inner side near the main drive telescopic cylinder, and the two ends of the retractable support column in the telescopic direction are respectively hinged to the top beam and the base.

4. The multi-point electric support device according to claim 3, characterized in that, A shield beam extends from the top beam, and the multi-link balancing mechanism includes a support rod connecting the middle of the shield beam to the base, and a connecting rod connecting the extended end of the shield beam to the edge of the base; The multi-link balancing mechanism is located away from the main drive telescopic cylinder.

5. The multi-point electric support device according to claim 4, characterized in that, The multi-link balancing mechanism includes multiple sets of support rods and connecting rods arranged in parallel, with the support end of the telescopic support column arranged between two adjacent support rods.

6. The multi-point electric support device according to claim 4, characterized in that, The main drive telescopic cylinder is a parallel electric cylinder with the motor and cylinder body arranged in parallel.

7. The multi-point electric support device according to claim 6, characterized in that, A first pin is provided between the extended end of the parallel electric cylinder and the top beam to provide rotational support for it. And / or, a second pin is provided between the support end of the parallel electric cylinder and the base to provide rotational support for it.

8. The multi-point electric support device according to claim 7, characterized in that, The rotation directions of the first and second pins are arranged in the same direction as the extension direction of the multi-link balancing mechanism.

9. The multi-point electrically powered support device according to any one of claims 2-8, characterized in that, The electrically driven telescopic cylinder includes a first electrically driven telescopic cylinder and a second electrically driven telescopic cylinder arranged in parallel. The first electrically driven telescopic cylinder and the second electrically driven telescopic cylinder are located on the same side of the telescopic support column and the multi-link balance mechanism.

10. A coal mine underground support device, characterized in that, The invention includes a support frame for lifting and supporting underground equipment in coal mines, wherein the support frame is a multi-point electric support device as described in any one of claims 1-9.

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