Tail support structure and hydraulic support withdrawing trailer for coal mine

Abstract

The application discloses a tail supporting structure and a hydraulic support withdrawing trailer for coal mines, and belongs to the technical field of underground coal mine transport vehicles. The tail supporting structure comprises a battery bracket and a mounting bracket. The battery bracket is used for placing a trailer battery. A positioning plate is arranged on the battery bracket. A lifting opening and a guide sliding block are arranged on the positioning plate. A first pin shaft hole is arranged on the guide sliding block. The mounting bracket is used for being mounted on the tail of the withdrawing trailer. A lifting support leg and a U-shaped sliding groove are arranged on the mounting bracket. A supporting shoe is arranged at the bottom of the lifting support leg. A clamping groove is arranged on the supporting shoe. A second pin shaft hole corresponding to the first pin shaft hole is arranged on the U-shaped sliding groove to insert a pin. The hydraulic support withdrawing trailer for coal mines comprises a withdrawing trailer body and the tail supporting structure. The mounting bracket is used for being mounted on the tail of the withdrawing trailer body. Under the action of the tail supporting structure, the requirement of supporting the ground of the vehicle can be met, and the requirement of quickly replacing the power source can be met.

Description

Technical Field

[0001] This invention relates to the field of underground coal mine transport vehicles, and in particular to a tail support structure and a hydraulic support retraction trailer for coal mines. Background Technology

[0002] The hydraulic support retraction trailer for coal mines is used to tow and move hydraulic supports in fully mechanized mining faces underground. The entire machine uses a tracked chassis, with a lifting boom at the front and a power source typically located at the rear. Due to the vehicle's considerable weight, vertical lifting outriggers are usually installed around the vehicle to lift the tracks completely off the ground for easy maintenance. Existing equipment typically uses an explosion-proof diesel engine as its power source, so there's no need to consider replacing the rear power source. If a battery is used as the power source, the design must accommodate rapid battery replacement. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned technical problems and provide a rear support structure and a hydraulic support retraction trailer for coal mines, including a battery bracket and a mounting bracket. The battery bracket is used to hold the trailer battery, and the mounting bracket is used to install on the rear of the retraction trailer. The lifting outriggers on the mounting bracket can be used to support the ground and lift the vehicle off the ground, and can also lift the battery bracket to complete the installation of the trailer battery on the rear of the retraction trailer and lower the battery bracket for maintenance and replacement of the trailer battery. This invention can meet the vehicle's ground support requirements and solve the need for rapid power source replacement.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention discloses a tail support structure, including a battery bracket and a mounting bracket;

[0005] The battery bracket is used to hold the trailer battery. The battery bracket has a positioning plate at one end facing the rear of the retractable trailer. The positioning plate has a lifting opening and guide sliders on both sides of the lifting opening on its plate surface facing the retractable trailer. The lifting opening is located at the bottom of the positioning plate. The guide sliders are vertically arranged and include a locking section and an enlarged positioning section. The positioning section is located above the locking section. The locking section has a first pin hole near the positioning section.

[0006] The mounting bracket is used to install on the rear of a retractable trailer. The mounting bracket is equipped with lifting outriggers that can be raised and lowered, and U-shaped grooves on both sides of the lifting outriggers. The bottom of the lifting outriggers is equipped with support boots that can extend into the lifting port. The support boots are equipped with snap-fit ​​grooves for the positioning plate to engage, thereby driving the battery tray to rise and fall. The U-shaped grooves are vertically arranged and include an entry section and an anti-detachment section. The entry section is located below the anti-detachment section. The groove of the entry section allows the positioning section of the battery tray placed on the ground to enter relatively horizontally. The anti-detachment section is located on the rising path of the positioning section as the battery tray rises. The groove of the anti-detachment section is equipped with a limiting part to prevent the positioning section from relatively horizontally detaching. The anti-detachment section is equipped with a second pin hole corresponding to the first pin hole. The second pin hole and the first pin hole are used to insert a pin.

[0007] Preferably, the limiting part is a limiting strip disposed on the two side walls of the anti-detachment section.

[0008] Preferably, the sole of the support boot is sloped.

[0009] Preferably, the lifting outrigger is raised and lowered by a lifting mechanism.

[0010] Preferably, the lifting mechanism is a hydraulic cylinder, the cylinder body of the hydraulic cylinder is mounted on the mounting bracket, and the piston rod of the hydraulic cylinder is fixedly connected to the lifting outrigger.

[0011] Preferably, the piston rod of the hydraulic cylinder is arranged vertically downwards, and the top of the lifting outrigger is provided with a mounting groove for the piston rod of the hydraulic cylinder to extend into, and the end of the piston rod of the hydraulic cylinder is fixedly connected to the bottom of the mounting groove.

[0012] Preferably, the mounting bracket is provided with four guide plates arranged side by side along the width of the vehicle body. The guide plates are arranged vertically, and a lifting groove is formed between the two guide plates in the middle. The lifting outrigger slides in the lifting groove, and the guide plates located at the edges and the adjacent guide plates in the middle form the U-shaped groove.

[0013] Preferably, the opening of the lifting chute is provided with a mounting plate, a hinge shaft is connected between the mounting plate and the mounting bracket, and the end of the cylinder body of the hydraulic cylinder is provided with a hinge lug, which is hinged to the hinge shaft.

[0014] Preferably, the trailer battery and the battery bracket are positioned by pins.

[0015] The present invention also discloses a hydraulic support retraction trailer for coal mines, comprising a retraction trailer body and the aforementioned tail support structure, wherein the mounting bracket is used to be mounted on the rear of the retraction trailer body.

[0016] The present invention achieves the following technical effects compared to the prior art:

[0017] In this invention, the rear support structure includes a battery bracket and a mounting bracket. The battery bracket is used to hold the trailer battery, and the mounting bracket is used to install on the rear of the retractable trailer. The lifting outriggers on the mounting bracket can be used to support the vehicle on the ground and lift it off the ground to meet the vehicle's ground support requirements. They can also lift the battery bracket to raise the trailer battery. A pin is inserted into the first pin hole on the guide slider and the second pin hole of the U-shaped slide groove to lock the battery bracket, which has been raised to a certain height. This completes the installation of the trailer battery on the rear of the retractable trailer and allows the battery bracket to be lowered for maintenance and replacement of the trailer battery. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments 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 by analyzing these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the hydraulic support retraction trailer for coal mines in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure after the retractable trailer body and the trailer battery (battery bracket, mounting bracket) are separated in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A partially enlarged schematic diagram of the battery bracket and mounting bracket;

[0022] Figure 4 This is a schematic diagram of the structure of the mounting bracket and trailer battery in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the battery bracket, mounting bracket, and trailer battery after they are separated in an embodiment of the present invention;

[0024] Figure 6 This is a cross-sectional view of the mounting bracket in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Retractable trailer body; 2. Rear support structure; 3. Trailer battery;

[0027] 21. Battery holder; 22. Mounting bracket;

[0028] 211. Positioning plate; 212. Lifting port; 213. Guide slider; 214. First pin hole; 215. Limiting plate; 2131. Locking section; 2132. Positioning section;

[0029] 221. Lifting outrigger; 222. U-shaped slide rail; 223. Support shoe; 224. Snap-fit ​​groove; 225. Limiting strip; 226. Second pin hole; 227. Hydraulic cylinder; 228. Lifting slide rail; 229. Mounting plate; 230. Hinge shaft; 2211. Mounting groove; 2221. Entry section; 2222. Anti-detachment section; 2231. Inclined surface. Detailed Implementation

[0030] 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 analyzed and obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] The purpose of this invention is to provide a rear support structure and a hydraulic support retraction trailer for coal mines to solve the problems existing in the prior art. In this invention, the rear support structure includes a battery bracket and a mounting bracket. The battery bracket is used to hold the trailer battery, and the mounting bracket is used to install on the rear of the retraction trailer. The lifting outriggers on the mounting bracket can be used to support the ground and lift the vehicle off the ground to meet the vehicle's ground support requirements. They can also lift the battery bracket to raise the trailer battery. A pin is inserted into the first pin hole on the guide slider and the second pin hole of the U-shaped slide groove to lock the battery bracket raised to a certain height, thus completing the installation of the trailer battery on the rear of the retraction trailer and allowing the battery bracket to be lowered for maintenance and replacement. The U-shaped slide groove is used to accommodate the guide slider of the battery bracket, allowing it to slide inside.

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] like Figures 1 to 6 As shown, this embodiment provides a tail support structure, including a battery bracket 21 and a mounting bracket 22. Wherein:

[0035] The battery bracket 21 is used to hold the trailer battery 3. The end of the battery bracket 21 facing the rear of the retractable trailer has a positioning plate 211. The positioning plate 211 has a lifting opening 212 and two sets of guide sliders 213 on its surface facing the retractable trailer. The two sets of guide sliders 213 are located on either side of the lifting opening 212, and each set of guide sliders 213 includes at least one guide slider 213. The lifting opening 212 is located at the bottom of the positioning plate 211. The guide sliders 213 are vertically arranged and include a locking section 2131 and a positioning section 2132, with the positioning section 2132 located above the locking section 2131. The positioning section 2132 is an enlarged section, meaning its dimensions are larger than the locking section 2131, at least in the width direction of the vehicle body. The locking section 2131 has a first pin hole 214, which is located near the positioning section 2132.

[0036] Mounting bracket 22 is used to install on the rear of a retractable trailer. Mounting bracket 22 is equipped with lifting outriggers 221 and two sets of U-shaped slides 222, located on either side of the lifting outriggers 221. Each set of U-shaped slides 222 includes at least one U-shaped slide. The number and position of the U-shaped slides 222 correspond to the guide slider 213. The lifting outriggers 221 can be raised and lowered. The bottom of the lifting outriggers 221 is equipped with support shoes 223, which can extend into the lifting port 212. The support shoes 223 are equipped with snap-fit ​​grooves 224 for the positioning plate 211 to snap into, thereby driving the battery bracket 21 to rise and fall. The U-shaped slide 222 is vertically arranged and includes an entry section 2221 and an anti-detachment section 2222. The entry section 2221 is located below the anti-detachment section 2222, and its opening allows the positioning section 2132 of the battery bracket 21, placed on the ground, to slide relatively horizontally into the slide. The anti-detachment section 2222 is located on the upward path of the positioning section 2132 as the battery bracket 21 rises. A limiting part (refer to limiting strip 225) is provided on the opening of the anti-detachment section 2222 to prevent the positioning section 2132 from sliding out relatively horizontally. A second pin hole 226 is provided inside the anti-detachment section 2222. The second pin hole 226 is used to correspond with the first pin hole 214 to insert a pin, thereby locking the guide slider 213 and the U-shaped slide 222 and completing the assembly of the battery bracket 21 and the mounting bracket 22.

[0037] Working principle:

[0038] ① Installation of trailer battery 3 and the rear of the retractable trailer:

[0039] First, place the trailer battery 3 on the battery bracket 21, and place the battery bracket 21 on the ground;

[0040] Then, align the U-shaped groove 222 of the mounting bracket 22 on the rear of the retractable trailer with the guide slider 213 on the battery bracket 21;

[0041] Then, the lifting outrigger 221 of the retraction trailer descends, so that the support shoe 223 is supported on the ground. At this time, the support shoe 223 is exactly aligned with the lifting port 212. The retraction trailer moves backward, so that the support shoe 223 is inserted into the lifting port 212. The positioning section 2132 of the guide slider 213 is inserted into the entry section 2221 of the U-shaped slide 222. After the positioning section 2132 contacts the entry section 2221, the snap-fit ​​groove 224 on the support shoe 223 is located directly below the positioning plate 211.

[0042] Then, the lifting outrigger 221 rises, the positioning plate 211 snaps into the snap-fit ​​groove 224, and as the lifting outrigger 221 continues to rise, the support shoe 223 will lift the positioning plate 211, the battery bracket 21 and the trailer battery 3 together. The positioning section 2132 of the guide slider 213 slides into the anti-detachment section 2222 of the U-shaped slide groove 222. Under the action of the limiting part (refer to the limiting strip 225), the positioning section 2132 of the guide slider 213 will not detach from the groove of the anti-detachment section 2222 and disengage from the U-shaped slide groove 222, thus preventing the trailer battery 3 from tilting backward.

[0043] Finally, after the first pin hole 214 of the guide slider 213 and the second pin hole 226 of the U-shaped slide 222 are aligned, insert the pin to complete the installation of the trailer battery 3 and the rear of the retractable trailer.

[0044] When it is necessary to retract the trailer tracks off the ground, the lifting outriggers 221 can be lowered, the locking grooves 224 of the support boots 223 disengage from the positioning plate 211, and the support boots 223 are supported on the ground. With the lifting outriggers of the retracting trailer itself, the retraction of the trailer tracks off the ground can be completed.

[0045] ② Repair or replacement of trailer battery 3:

[0046] First, pull the pin out of the first pin hole 214 of the guide slider 213 and the second pin hole 226 of the U-shaped slide 222;

[0047] Then, the lifting outrigger 221 descends, and the battery bracket 21, carrying the trailer battery 3, descends with the support shoe 223. After the support shoe 223 supports the ground, the battery bracket 21 also touches the ground, and then maintenance or replacement can be carried out.

[0048] Finally, after the repair or replacement is completed, refer to the installation process of ① trailer battery 3 and the rear of the retractable trailer to complete the installation of trailer battery 3 and the rear of the retractable trailer.

[0049] In one embodiment, the limiting part is a limiting strip 225, which is disposed on the two side walls of the anti-detachment section 2222.

[0050] In one embodiment, the sole of the support boot 223 is a slope 2231, and the slope 2231 is inclined in the direction of the rearward direction towards the rear of the vehicle. The slope 2231 of the sole of the support boot 223 can reduce friction with the ground and reduce the resistance to the movement of the support boot 223 towards the lifting opening 212.

[0051] In one embodiment, the lifting outrigger 221 is raised and lowered by a lifting mechanism.

[0052] In one embodiment, the lifting mechanism is a hydraulic cylinder 227. The cylinder body of the hydraulic cylinder 227 is mounted on the mounting bracket 22, and the piston rod of the hydraulic cylinder 227 is fixedly connected to the lifting outrigger 221. The extension and retraction of the piston rod of the hydraulic cylinder 227 can realize the raising and lowering of the lifting outrigger 221.

[0053] In one embodiment, the piston rod of the hydraulic cylinder 227 is arranged vertically downward, and the top of the lifting outrigger 221 is provided with a mounting groove 2211, into which the piston rod of the hydraulic cylinder 227 extends, and the end of the piston rod of the hydraulic cylinder 227 is fixedly connected to the bottom of the mounting groove 2211.

[0054] In one embodiment, the battery bracket 21 is provided with limiting plates 215 on both sides (in the vehicle width direction) to limit the left and right sides (in the vehicle width direction) of the trailer battery 3.

[0055] In one embodiment, the mounting bracket 22 is provided with four guide plates, which are arranged side by side along the width of the vehicle body and are vertically oriented. A lifting groove 228 is formed between the two guide plates located in the middle, and the lifting leg 221 slides within the lifting groove 228 to guide the lifting of the lifting leg 221. The guide plates located at the edges and the adjacent guide plates located in the middle form a U-shaped groove 222.

[0056] In one embodiment, the groove of the lifting slide 228 is provided with a mounting plate 229, and a hinge shaft 230 is connected between the mounting plate 229 and the mounting bracket 22. The end of the cylinder body of the hydraulic cylinder 227 is provided with a hinge ear, which is hinged to the hinge shaft 230.

[0057] In one embodiment, the trailer battery 3 and the battery bracket 21 are also positioned by a pin, and the trailer battery 3 can be replaced by removing the pin.

[0058] Example 2

[0059] like Figures 1 to 6 As shown, this embodiment provides a hydraulic support retraction trailer for coal mines, including a retraction trailer body 1 and a tail support structure 2 as in Embodiment 1, with a mounting bracket 22 installed on the rear of the retraction trailer body 1.

[0060] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A tail support structure, characterized in that, Includes battery trays and mounting brackets; The battery bracket is used to hold the trailer battery. The battery bracket has a positioning plate at one end facing the rear of the retractable trailer. The positioning plate has a lifting opening and guide sliders on both sides of the lifting opening on its surface facing the retractable trailer. The lifting opening is located at the bottom of the positioning plate. The guide sliders are vertically arranged and include a locking section and an enlarged positioning section. The positioning section is located above the locking section, and the locking section has a first pin hole near the positioning section. The size of the positioning section is larger than that of the locking section. The mounting bracket is used to install on the rear of a retractable trailer. The mounting bracket is equipped with lifting outriggers that can be raised and lowered, and U-shaped grooves on both sides of the lifting outriggers. The bottom of the lifting outriggers is equipped with support boots that can extend into the lifting port. The support boots are equipped with snap-fit ​​grooves for the positioning plate to engage, thereby driving the battery tray to rise and fall. The U-shaped grooves are vertically arranged and include an entry section and an anti-detachment section. The entry section is located below the anti-detachment section. The groove of the entry section allows the positioning section of the battery tray placed on the ground to enter relatively horizontally. The anti-detachment section is located on the rising path of the positioning section as the battery tray rises. The groove of the anti-detachment section is equipped with a limiting part to prevent the positioning section from relatively horizontally detaching. The anti-detachment section is equipped with a second pin hole corresponding to the first pin hole. The second pin hole and the first pin hole are used to insert a pin.

2. The tail support structure according to claim 1, characterized in that, The limiting part is a limiting strip disposed on the two side walls of the anti-detachment section.

3. The tail support structure according to claim 1, characterized in that, The sole of the support boot is sloped.

4. The tail support structure according to claim 1, characterized in that, The lifting outrigger is raised and lowered via a lifting mechanism.

5. The tail support structure according to claim 4, characterized in that, The lifting mechanism is a hydraulic cylinder, the cylinder body of which is mounted on the mounting bracket, and the piston rod of which is fixedly connected to the lifting outrigger.

6. The tail support structure according to claim 5, characterized in that, The piston rod of the hydraulic cylinder is set vertically downward, and the top of the lifting outrigger is provided with a mounting groove for the piston rod of the hydraulic cylinder to extend into. The end of the piston rod of the hydraulic cylinder is fixedly connected to the bottom of the mounting groove.

7. The tail support structure according to claim 5, characterized in that, The mounting bracket is provided with four guide plates arranged side by side along the width of the vehicle body. The guide plates are vertically arranged, and a lifting groove is formed between the two guide plates in the middle. The lifting outrigger slides in the lifting groove. The guide plates located at the side and the adjacent guide plates in the middle form the U-shaped groove.

8. The tail support structure according to claim 7, characterized in that, The opening of the lifting chute is provided with a mounting plate, and a hinge shaft is connected between the mounting plate and the mounting bracket. The end of the cylinder body of the hydraulic cylinder is provided with a hinge lug, which is hinged to the hinge shaft.

9. The tail support structure according to claim 1, characterized in that, The trailer battery and the battery bracket are positioned by pins.

10. A hydraulic support retraction trailer for coal mines, characterized in that, It includes a retractable trailer body and a rear support structure as described in any one of claims 1-9, wherein the mounting bracket is used to mount on the rear of the retractable trailer body.

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