Unit support with self-moving mechanism and bottom lifting function

Abstract

The unit support with the self-moving mechanism and the bottom lifting function comprises a base, a stand column arranged on the base and a top beam arranged on the top of the stand column, a bottom plate is arranged at the bottom of the base, and a pair of bottom lifting jacks is vertically arranged at the front end and the rear end of the base respectively. The bottom lifting jack is used for lifting the base away from the ground; a pushing jack is hinged to the middle of the rear end of the base, and a connector used for being connected with an adjacent unit support is arranged at the other end of the pushing jack. According to the unit support with the self-moving mechanism and the bottom lifting function, the bottom lifting self-moving capacity of the support can be improved, and it is ensured that a support set can achieve bottom lifting and pushing forward under the bottom pricking condition.

Description

Technical Field

[0001] The utility model relates to the field of supports, and specifically, to a unit support with a self-shifting mechanism and a bottom-lifting function. Background Art

[0002] Unit supports have been widely promoted and applied in the field of roadway advance due to their simple structure, low cost, strong adaptability, etc. Generally, advance supports are arranged at the transportation roadway and return airway of fully-mechanized mining and fully-mechanized caving working faces to support the advance roof of the roadway to ensure the safety of personnel and equipment. However, the roadway environment is complex and changeable. In the case of a roadway with a relatively soft floor, the support is prone to sinking into the floor, resulting in the inability to move the support and poor support effect.

[0003] The utility model patent with the authorization announcement number CN221568533U discloses a bottom-lifting and pushing mechanism for the base of a hydraulic support, including a bottom-lifting part for lifting the base, a push rod for providing support to the bottom-lifting part when lifting the base, and a pull rod for driving the push rod to move with the base; the bottom-lifting part includes a bottom-lifting support of a mounting plate for arranging the bottom-lifting part on the base, and a jack that can extend to abut against the upper end surface of the push rod to lift the base; one end of the pull rod is hinged to the connecting seat of the base, and the other end is hinged to the tail end of the push rod. This bottom-lifting and pushing mechanism can lift the base off the ground by setting the bottom-lifting support and the jack to avoid the phenomenon of the base sinking into the floor. By setting the pull rod hinged to the push rod, the push rod and the pull rod can always move with the movement of the base, and there is no need for the pushing jack to independently operate the movement of the push rod. However, this bottom-lifting and pushing mechanism only sets a jack at the front part of the base, and the bottom-lifting and self-shifting ability needs to be improved. Content of the Utility Model

[0004] In order to improve the bottom-lifting and self-shifting ability of the support and ensure that the support group can achieve bottom-lifting and advancing when sinking into the floor, the technical solution adopted by the utility model is: a unit support with a self-shifting mechanism and a bottom-lifting function, including a base, a column arranged on the base, and a roof beam arranged on the top of the column. A bottom plate is arranged at the bottom of the base.

[0005] A pair of bottom-lifting jacks are vertically arranged at the front and rear ends of the base respectively, and the bottom-lifting jacks are used to lift the base off the ground.

[0006] A pushing jack is hinged in the middle at the rear end of the base, and a connecting head for connecting adjacent unit supports is arranged at the other end of the pushing jack.

[0007] Based on the above, in order to facilitate the installation of the pushing jack and ensure uniform force during pushing, connecting seats are respectively arranged in the middle at the front and rear ends of the base, and one of the connecting seats is connected to the pushing jack.

[0008] Based on the above, in order to ensure stable force application during the bottom-lifting operation, the bottom-lifting jacks are respectively arranged at the four corners of the front and rear ends of the base, and the specifications of the bottom-lifting jacks are the same.

[0009] Based on the above, in order to ensure that the bottom-lifting jacks can be effectively supported during the bottom-lifting operation, support seats are respectively arranged at the telescopic ends of the bottom-lifting jacks, and the support seats at the same end are integrally arranged.

[0010] Based on the above, in order to increase the structural stability, the width value of the support seat is greater than the width value of the base.

[0011] Based on the above, in order to improve the structural safety and prevent damage to the bottom-lifting jacks, sleeves with open lower ends are respectively arranged at the four corners of the front and rear ends of the base, and the bottom-lifting jacks are installed on the sleeves.

[0012] Based on the above, in order to increase the structural stability, the width value of the bottom plate is greater than or equal to the width value of the support seat.

[0013] The utility model has substantial features and progress compared with the prior art. Specifically, a unit support with a self-shifting mechanism and a bottom-lifting function provided by the utility model lifts the support through the bottom-lifting mechanisms at the front and rear ends of the base, and then uses the pushing jack to move the support. Specifically, in the case of the support being stuck to the bottom, the front frame columns descend to make it in a non-supporting state, the rear frame columns do not descend, the support is in a supporting state, the front part bottom-lifting mechanism of the front frame lifts the support, then pads are placed under the support, and then the rear part bottom-lifting mechanism of the front frame is extended to lift the support so that the pads are completely placed under the base. Finally, the pushing jack of the rear frame is extended to move the front frame to the designated position.

[0014] The unit support with a self-shifting mechanism and a bottom-lifting function has a simple structure, can move under different roadway floor conditions, and only requires one pushing jack to achieve movement. By improving the support roof contact effect, improving the support force-bearing condition, increasing the service life of the support, reducing the mine input cost, reducing the number of repairs, and improving the labor productivity.

[0015] Therefore, the unit support with a self-shifting mechanism and a bottom-lifting function improves the bottom-lifting and self-shifting ability of the support, and ensures that the support group can achieve bottom-lifting and advancing by pushing under the condition of being stuck to the bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic side structure view of a unit support with a self-shifting mechanism and a bottom-lifting function provided by the utility model.

[0017] Figure 2 is a schematic top structure view of a unit support with a self-shifting mechanism and a bottom-lifting function provided by the utility model.

[0018] Figure 3 It is a schematic diagram of the end structure of a unit support with a self - moving mechanism and a bottom - lifting function provided by the present utility model.

[0019] Figure 4 and Figure 5 It is a schematic diagram of the operation of a unit support with a self - moving mechanism and a bottom - lifting function provided by the present utility model.

[0020] In the figure: 1. Connecting head; 2. Pushing jack; 3. Sleeve; 4. Column; 5. Base; 6. Roof beam; 7. Connecting seat; 8. Cushion block; 9. Floor; 10. Support seat; 11. Bottom - lifting jack. Specific embodiments

[0021] The following will further describe the technical solutions of the present utility model in detail through specific embodiments.

[0022] Embodiment 1

[0023] This embodiment provides a unit support with a self - moving mechanism and a bottom - lifting function. As shown in, including a base 5, a column 4 provided on the base 5, and a roof beam 6 provided on the top of the column 4. A floor 9 is provided at the bottom of the base 5. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A pair of bottom - lifting jacks 11 are respectively vertically provided at the front and rear ends of the base 5. The bottom - lifting jacks 11 are used to lift the base 5 off the ground.

[0024] A pushing jack 2 is hinged in the middle at the rear end of the base 5. The other end of the pushing jack 2 is provided with a connecting head 1 for connecting adjacent unit supports.

[0025] In this embodiment, in order to facilitate the installation of the pushing jack and ensure uniform force during pushing, connecting seats 7 are respectively provided in the middle of the front and rear ends of the base 5. One of the connecting seats 7 is connected to the pushing jack 2.

[0026] In order to ensure smooth force application during the bottom - lifting operation, the bottom - lifting jacks 11 are respectively provided at the four - corner positions of the front and rear ends of the base 5, and the bottom - lifting jacks 11 have the same specifications.

[0027] In order to ensure that the bottom - lifting jacks can be effectively supported during the bottom - lifting operation, support seats 10 are respectively provided at the telescopic ends of the bottom - lifting jacks 11, and the support seats 10 at the same end are integrally provided.

[0028] In order to ensure that the bottom - lifting jacks can be effectively supported during the bottom - lifting operation, support seats 10 are respectively provided at the telescopic ends of the bottom - lifting jacks 11, and the support seats 10 at the same end are integrally provided.

[0029] Embodiment 2

[0030] This embodiment provides a unit support with a self-shifting mechanism and a bottom-lifting function. The main difference from Embodiment 1 is that in this embodiment, to increase the structural stability, the width value of the support base 10 is greater than the width value of the base 5. To increase the structural stability, the width value of the bottom plate 9 is greater than or equal to the width value of the support base 10.

[0031] Embodiment 3

[0032] This embodiment provides a unit support with a self-shifting mechanism and a bottom-lifting function. The main difference from Embodiment 1 is that in this embodiment, to improve the structural safety and prevent damage to the bottom-lifting jacks, sleeves 3 with open lower ends are respectively provided at the four corners of the front and rear ends of the base 5, and the bottom-lifting jacks 11 are installed on the sleeves 3.

[0033] Specifically, the specific working steps of the unit support with a self-shifting mechanism and a bottom-lifting function are as follows: In the case where the support is grounded, the front frame columns descend to a non-supporting state, and the rear frame columns do not descend, so the support is in a supporting state. The support is lifted by using the bottom-lifting jacks 11 at the front of the front frame. Then, pads 8 are placed under the support. Subsequently, the bottom-lifting jacks 11 at the rear of the front frame are extended to lift the support so that the pads 8 are completely placed under the base. Finally, the push jack 2 connected to the rear frame is extended to move the front frame to the designated position.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features. Without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A unit support with a self-moving mechanism and a bottom lifting function, comprising a base, a column arranged on the base, and a top beam arranged on the top of the column, wherein a bottom plate is arranged at the bottom of the base, and characterized in that: A pair of bottom lifting jacks are respectively arranged vertically at the front and rear ends of the base, and the bottom lifting jacks are used to lift the base off the ground; A push jack is hinged in the middle of the rear end of the base, and a connecting head for connecting adjacent unit brackets is arranged at the other end of the push jack.

2. The unit bracket with self-moving mechanism and bottom lifting function according to claim 1, characterized in that: Connecting seats are respectively arranged in the middle of the front and rear ends of the base, and one of the connecting seats is connected to the push jack.

3. The unit bracket with self-moving mechanism and bottom lifting function according to claim 2, characterized in that: The bottom lifting jacks are respectively arranged at the four corners of the front and rear ends of the base, and the specifications of the bottom lifting jacks are the same.

4. The unit support with self-moving mechanism and bottom lifting function according to claim 3, characterized in that: The telescopic ends of the bottom lifting jack are respectively provided with support seats, and the support seats located at the same end are arranged in one piece.

5. The unit support with self-moving mechanism and bottom lifting function according to claim 4, characterized in that: The width of the support seat is greater than the width of the base.

6. The unit support with self-moving mechanism and bottom lifting function according to claim 5, characterized in that: Sleeves with open lower ends are respectively arranged at the four corners of the front and rear ends of the base, and the bottom lifting jacks are installed on the sleeves.

7. The unit support with self-moving mechanism and bottom lifting function according to claim 6, characterized in that: The width of the base plate is greater than or equal to the width of the support seat.

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