Electric bulldozer modified by diesel bulldozer and control brake system of electric bulldozer

Abstract

The electric bulldozer comprises a brake shell, a sealing disc is arranged on the inner side of the brake shell, the rear portion of the brake shell is rotationally connected with an electric drive shaft through a bearing part, and the front end of the electric drive shaft penetrates through the brake shell and extends into the brake shell; the invention relates to the technical field of bulldozer braking. According to the electric bulldozer modified by the diesel bulldozer and the control braking system of the electric bulldozer, the first brake disc and the second brake disc are arranged on the surface of the electric drive shaft and are matched with the second friction plate and the first friction plate for use, and through the arrangement of the structures, after a coil is powered off, the electric bulldozer can be driven by the thrust of the first spring and linkage between the structures; the first friction plate and the plurality of second friction plates are synchronous and respectively contacted with the first brake disc and the second brake disc to generate friction, so that the rotating electric drive shaft can be quickly braked, and the braking speed and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of bulldozer braking, in particular to an electric bulldozer modified from a diesel bulldozer and a control braking system thereof. Background Art

[0002] Oil-to-electricity conversion is to change the traditional diesel engine drive mode of the drilling rig through multiple high-voltage motors and stepless speed-regulating hydraulic coupling reducers, and change the diesel engine parallel drive to AC motor parallel drive.

[0003] Electric bulldozer is a kind of earth-moving machinery that can dig, transport and dump rock and soil, and has a wide range of uses in open-pit mines. For example, it is used to build dumping grounds, level automobile dumping grounds, pile up scattered ore and rock, level work platforms and construction sites, etc.

[0004] The existing electric bulldozer needs to be driven by a motor to move forward, and when the bulldozer needs to be braked, the motor needs to be reversed to slow down. However, in actual use, if the bulldozer is emergency braked during normal driving, the motor needs to be reversed before braking, which will result in a long reaction time and the bulldozer cannot be completely stopped due to the large inertia, resulting in poor braking effect and affecting the safety of use.

[0005] Therefore, bulldozer control braking systems that can improve safety are now designed to address such defects. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an electric bulldozer converted from a diesel bulldozer and a control brake system thereof, which solves the problems of long response time and low efficiency of the prior oil-to-electric brake system.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a control braking system of an electric bulldozer modified from a diesel bulldozer, comprising a brake housing, a sealing disc is arranged on the inner side of the brake housing, the rear part of the brake housing is rotatably connected to an electric drive shaft through a bearing, and the front end of the electric drive shaft passes through the brake housing and extends to the interior of the brake housing, and the front and rear parts of the surface of the electric drive shaft and located on the inner side of the brake housing are respectively fixedly connected with a first brake disc and a second brake disc.

[0008] Preferably, a retraction circular groove is opened at the rear portion of the sealing disk, and an L-shaped circular groove frame is fixedly connected to the edge side of the inner cavity of the retraction circular groove through a fixing block, and several L-shaped circular groove frames are equidistantly arranged, and a rebound rod is slidably installed on the inner side of the L-shaped circular groove frame, and a first friction plate used in conjunction with the first brake disk is fixedly connected between the rear ends of several of the rebound rods.

[0009] Preferably, a first spring is sleeved on the surface of the rebound rod and located on the front side of the L-shaped circular groove frame, and a coil used in conjunction with the first friction plate is arranged between the outer sides of several L-shaped circular groove frames and located inside the retracted circular groove.

[0010] Preferably, the outer periphery of the sealing disk surface is provided with a circular sleeve hole penetrating into the interior of the brake housing, and a plurality of circular sleeve holes are arranged at equal intervals. The outer periphery of the rear part of the inner cavity of the brake housing is fixedly connected with a threaded insert used in conjunction with the circular sleeve hole through a fixing block, and the number of the threaded insert is the same as the number of the circular sleeve holes. A threaded bolt used in conjunction with the threaded insert is arranged on the inner side of the circular sleeve hole.

[0011] Preferably, the side of the threaded insert close to the second brake disc is fixedly connected to a limiting storage frame through an opening, and the side of the limiting storage frame close to the second brake disc is slidably installed with an L-shaped rebound plate through an opening, and a second spring is fixedly connected between the L-shaped rebound plate and the surface of the threaded insert.

[0012] Preferably, one end of the L-shaped rebound plate located inside the limiting storage frame is fixedly connected to an arc-surface stop block used in conjunction with a threaded bolt, and a conical head used in conjunction with the arc-surface stop block is provided at the rear end of the threaded bolt.

[0013] Preferably, a transverse sliding rod is slidably installed on the surface of the L-shaped rebound plate through an opening, and the bottom of the transverse sliding rod is fixedly connected to a second friction plate used in conjunction with the second brake disc through a bracket, and a third spring is fixedly connected between the second friction plate and the L-shaped rebound plate, and the front end of the transverse sliding rod is fixedly connected to a pressure-bearing block used in conjunction with the first friction plate.

[0014] Preferably, the electric bulldozer converted from a diesel bulldozer comprises a control braking system for the electric bulldozer according to any one of claims 1-7.

[0015] Beneficial Effects

[0016] The present invention provides an electric bulldozer modified from a diesel bulldozer and a control brake system thereof. Compared with the existing technology, it has the following beneficial effects:

[0017] (1) The electric bulldozer converted from a diesel bulldozer and its control brake system are provided with a first brake disc and a second brake disc on the surface of the electric drive shaft, and used in combination with a second friction plate and a first friction plate. The arrangement of these structures can, after the coil is powered off, utilize the thrust of the first spring and the linkage between the structures to allow the first friction plate and a plurality of second friction plates to synchronously contact and generate friction with the first brake disc and the second brake disc, respectively, so that the rotating electric drive shaft can be braked quickly, thereby improving the braking speed and efficiency.

[0018] (2) The electric bulldozer converted from a diesel bulldozer and its control brake system are equipped with an L-shaped rebound plate installed at the bottom of the threaded insert using a limit storage frame, and are used in conjunction with a conical head and an arc-surface stopper. The arrangement of these structures can utilize the conical head to squeeze the arc-surface stopper to drive the pressure-bearing stopper and the second friction plate to move up and down, which can facilitate subsequent synchronous braking and can also retract during disassembly without causing any conflict with the structure.

[0019] (3) The electric bulldozer converted from a diesel bulldozer and its control brake system are used by installing a threaded sleeve at the rear of the inner cavity of the brake housing, and are used in combination with a round sleeve hole and a threaded bolt. The arrangement of these structures can utilize the docking of the threaded sleeve and the round sleeve hole to limit and guide the sealing disk, making installation easier. At the same time, the threaded bolt can lock and link the structures, effectively improving the overall practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 A cross-sectional view of the brake housing and sealing disc structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the L-shaped circular groove frame, the rebounding rod and the first friction plate of the present invention;

[0023] Figure 4 It is a schematic diagram of the round sleeve hole, threaded bolt and conical head structure of the present invention;

[0024] Figure 5 A side view of the internal structure of the brake housing of the present invention;

[0025] Figure 6 It is a cross-sectional view of the threaded insert structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the electric drive shaft, the first brake disc and the second brake disc structure of the present invention.

[0027] In the figure: 1. brake housing; 2. sealing disc; 3. electric drive shaft; 4. first brake disc; 5. second brake disc; 6. retracting circular groove; 7. L-shaped circular groove frame; 8. rebound lever; 9. first friction plate; 10. first spring; 11. coil; 12. round sleeve hole; 13. threaded insert; 14. threaded bolt; 15. limit storage frame; 16. L-shaped rebound plate; 17. arc-surface lever; 18. second spring; 19. transverse slide bar; 20. second friction plate; 21. third spring; 22. pressure-bearing lever; 23. conical head. DETAILED DESCRIPTION

[0028] 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 are within the scope of protection of the present invention.

[0029] See also Figure 1-7 , the present invention provides two technical solutions:

[0030] Embodiment 1

[0031] A control brake system for an electric bulldozer modified from a diesel bulldozer, comprising a brake housing 1, a sealing disc 2 is arranged on the inner side of the brake housing 1, an armature and a yoke are arranged inside the sealing disc 2, the rear part of the brake housing 1 is rotatably connected to an electric drive shaft 3 through a bearing, and the front end of the electric drive shaft 3 passes through the brake housing 1 and extends to the inside of the brake housing 1, the front and rear parts of the surface of the electric drive shaft 3 and are located on the inner side of the brake housing 1 are respectively fixedly connected with a first brake disc 4 and a second brake disc 5, the rear part of the sealing disc 2 is provided with a retracting circular groove 6, and the inner cavity of the retracting circular groove 6 The edge side of the L-shaped circular groove frame 7 is fixedly connected with an L-shaped circular groove frame 7 through a fixed block, and several L-shaped circular groove frames 7 are equidistantly arranged, a rebound rod 8 is slidably installed on the inner side of the L-shaped circular groove frame 7, and a first friction plate 9 used in conjunction with the first brake disc 4 is fixedly connected between the rear ends of the several rebound rods 8, a first spring 10 is sleeved on the surface of the rebound rod 8 and located on the front side of the L-shaped circular groove frame 7, and a coil 11 used in conjunction with the first friction plate 9 is arranged between the outer sides of the several L-shaped circular groove frames 7 and located inside the retraction circular groove 6, and the coil 11 is a magnetic ring made of copper.

[0032] When in use, the sealing disc 2 is installed on the inner side of the brake housing 1, and several threaded inserts 13 are first inserted into the inner side of the circular sleeve hole 12 to guide and limit the sealing disc 2. After the threaded insert 13 is inserted into the circular sleeve hole 12, the threaded bolt 14 is inserted into the inner side of the circular sleeve hole 12 and rotated. The threaded bolt 14 will be threadedly connected with the threaded insert 13 and move inward. When all the threaded bolts 14 enter the threaded insert 13, the threaded bolt 14 will fix the sealing disc 2 and the brake housing 1. At the same time, the movement of the threaded bolt 14 will squeeze the arc-shaped block 17 through the conical head 23, and the arc-shaped block 17 will push the L-shaped rebound plate 16 to descend after being squeezed. The descent of the L-shaped rebound plate 16 will also drive the second friction plate 20 and the pressure-bearing block 22 to descend synchronously. After the second friction plate 20 descends, it is located in front of the second brake disc 5, and the pressure-bearing block 22 is located at the rear of the first friction plate 9. At this time, the brake housing 1 and the sealing disc 2 are installed.

[0033] The outer circumference of the surface of the sealing disk 2 is provided with a circular sleeve hole 12 that penetrates into the interior of the brake housing 1, and a number of the circular sleeve holes 12 are equidistantly arranged. The outer circumference of the rear part of the inner cavity of the brake housing 1 is fixedly connected with a threaded insert 13 used in conjunction with the circular sleeve hole 12 through a fixing block, and the number of the threaded insert 13 and the circular sleeve hole 12 is the same. The inner side of the circular sleeve hole 12 is provided with a threaded bolt 14 used in conjunction with the threaded insert 13. The side of the threaded insert 13 close to the second brake disc 5 is fixedly connected to a limited position receiving frame 15 through an opening. The side of the limited position receiving frame 15 close to the second brake disc 5 is slidably installed with an L-shaped rebound plate 16 through an opening. The L-shaped rebound plate 16 is slidably installed with the threaded insert 1 3 is fixedly connected with a second spring 18, one end of the L-shaped rebound plate 16 located on the inner side of the limit storage frame 15 is fixedly connected with an arc-shaped block 17 used in conjunction with the threaded bolt 14, and a conical head 23 used in conjunction with the arc-shaped block 17 is provided at the rear end of the threaded bolt 14, and a transverse slide bar 19 is slidably installed on the surface of the L-shaped rebound plate 16 through an opening, and a second friction plate 20 used in conjunction with the second brake disc 5 is fixedly connected to the bottom of the transverse slide bar 19 through a bracket, and a third spring 21 is fixedly connected between the second friction plate 20 and the L-shaped rebound plate 16, and a pressure-bearing block 22 used in conjunction with the first friction plate 9 is fixedly connected to the front end of the transverse slide bar 19.

[0034] Embodiment 2

[0035] A control brake system for an electric bulldozer modified from a diesel bulldozer, comprising a brake housing 1, a sealing disc 2 is arranged on the inner side of the brake housing 1, an armature and a yoke are arranged inside the sealing disc 2, the rear part of the brake housing 1 is rotatably connected to an electric drive shaft 3 through a bearing, and the front end of the electric drive shaft 3 passes through the brake housing 1 and extends to the inside of the brake housing 1, the front and rear parts of the surface of the electric drive shaft 3 and are located on the inner side of the brake housing 1 are respectively fixedly connected with a first brake disc 4 and a second brake disc 5, the rear part of the sealing disc 2 is provided with a retracting circular groove 6, and the inner cavity of the retracting circular groove 6 The edge side of the L-shaped circular groove frame 7 is fixedly connected with an L-shaped circular groove frame 7 through a fixed block, and several L-shaped circular groove frames 7 are equidistantly arranged, a rebound rod 8 is slidably installed on the inner side of the L-shaped circular groove frame 7, and a first friction plate 9 used in conjunction with the first brake disc 4 is fixedly connected between the rear ends of the several rebound rods 8, a first spring 10 is sleeved on the surface of the rebound rod 8 and located on the front side of the L-shaped circular groove frame 7, and a coil 11 used in conjunction with the first friction plate 9 is arranged between the outer sides of the several L-shaped circular groove frames 7 and located inside the retraction circular groove 6, and the coil 11 is a magnetic ring made of copper.

[0036] When in use, the sealing disc 2 is installed on the inner side of the brake housing 1, and several threaded inserts 13 are first inserted into the inner side of the circular sleeve hole 12 to guide and limit the sealing disc 2. After the threaded insert 13 is inserted into the circular sleeve hole 12, the threaded bolt 14 is inserted into the inner side of the circular sleeve hole 12 and rotated. The threaded bolt 14 will be threadedly connected with the threaded insert 13 and move inward. When all the threaded bolts 14 enter the threaded insert 13, the threaded bolt 14 will fix the sealing disc 2 and the brake housing 1. At the same time, the movement of the threaded bolt 14 will squeeze the arc-shaped block 17 through the conical head 23, and the arc-shaped block 17 will push the L-shaped rebound plate 16 to descend after being squeezed. The descent of the L-shaped rebound plate 16 will also drive the second friction plate 20 and the pressure-bearing block 22 to descend synchronously. After the second friction plate 20 descends, it is located in front of the second brake disc 5, and the pressure-bearing block 22 is located at the rear of the first friction plate 9. At this time, the brake housing 1 and the sealing disc 2 are installed.

[0037] The outer circumference of the surface of the sealing disk 2 is provided with a circular sleeve hole 12 that penetrates into the interior of the brake housing 1, and a number of the circular sleeve holes 12 are equidistantly arranged. The outer circumference of the rear part of the inner cavity of the brake housing 1 is fixedly connected with a threaded insert 13 used in conjunction with the circular sleeve hole 12 through a fixing block, and the number of the threaded insert 13 and the circular sleeve hole 12 is the same. The inner side of the circular sleeve hole 12 is provided with a threaded bolt 14 used in conjunction with the threaded insert 13. The side of the threaded insert 13 close to the second brake disc 5 is fixedly connected to a limited position receiving frame 15 through an opening. The side of the limited position receiving frame 15 close to the second brake disc 5 is slidably installed with an L-shaped rebound plate 16 through an opening. The L-shaped rebound plate 16 is slidably installed with the threaded insert 1 3 is fixedly connected with a second spring 18, one end of the L-shaped rebound plate 16 located on the inner side of the limit storage frame 15 is fixedly connected with an arc-shaped block 17 used in conjunction with the threaded bolt 14, and a conical head 23 used in conjunction with the arc-shaped block 17 is provided at the rear end of the threaded bolt 14, and a transverse slide bar 19 is slidably installed on the surface of the L-shaped rebound plate 16 through an opening, and a second friction plate 20 used in conjunction with the second brake disc 5 is fixedly connected to the bottom of the transverse slide bar 19 through a bracket, and a third spring 21 is fixedly connected between the second friction plate 20 and the L-shaped rebound plate 16, and a pressure-bearing block 22 used in conjunction with the first friction plate 9 is fixedly connected to the front end of the transverse slide bar 19.

[0038] During operation, the electric drive shaft 3 is driven to drive the first brake disc 4 and the second brake disc 5 to rotate synchronously, and when the first friction plate 9 is energized, it will adsorb the first friction plate 9 to prevent it from contacting the first brake disc 4, and when the first friction plate 9 is powered off, it will no longer adsorb the first friction plate 9. At this time, the first friction plate 9 moves backward under the elastic pulling force of the first spring 10 to fit the first brake disc 4, and while the first friction plate 9 moves backward, it will also push a plurality of pressure-bearing blocks 22 to drive a plurality of second friction plates 20 to contact the second brake disc 5 under the limit of the transverse slide bar 19. When the first brake disc 4 and the second brake disc 5 are in contact and friction at the same time, the electric drive shaft 3 can be quickly braked and stopped under the double friction. When maintenance is needed, several threaded bolts 14 are rotated to pull them out from the inner side of the threaded insert 13. The arc-surface block 17 will make the second friction plate 20 and the pressure-bearing block 22 rise synchronously under the pulling force of the second spring 18 without the squeezing of the threaded bolts 14. The rising pressure-bearing block 22 and the second friction plate 20 will not conflict with the second brake disc 5 and the first friction plate 9. After the threaded bolts 14 are completely disassembled, the sealing disc 2 is taken out from the inner side of the brake housing 1.

[0039] Among them, the electric bulldozer converted from a diesel bulldozer includes a control braking system for the electric bulldozer according to any one of claims 1-7.

[0040] The advantages of the second embodiment over the first embodiment are: by installing an L-shaped rebound plate 16 at the bottom of the threaded insert 13 using a limiting storage frame 15, and using it in combination with a conical head 23 and an arc-surface block 17, the settings of these structures can utilize the conical head 23 to squeeze the arc-surface block 17 to drive the pressure-bearing block 22 and the second friction plate 20 to rise and fall, which can facilitate subsequent synchronous braking and can retract without causing conflict with the structure during disassembly. By installing a threaded insert 13 at the rear part of the inner cavity of the brake housing 1, and using it in combination with a round sleeve hole 12 and a threaded bolt 14, the settings of these structures can utilize the docking of the threaded insert 13 and the round sleeve hole 12 to limit and guide the sealing disk 2, which is convenient for installation. At the same time, the threaded bolt 14 can lock and link the structures, effectively improving the overall practicality of the equipment.

[0041] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A control brake system for an electric bulldozer converted from a diesel bulldozer, comprising a brake housing (1), characterized in that: A sealing disc (2) is arranged on the inner side of the brake housing (1); the rear part of the brake housing (1) is rotatably connected to an electric drive shaft (3) via a bearing member, and the front end of the electric drive shaft (3) passes through the brake housing (1) and extends to the interior of the brake housing (1); the front and rear parts of the surface of the electric drive shaft (3) and located on the inner side of the brake housing (1) are respectively fixedly connected to a first brake disc (4) and a second brake disc (5).

2. The control brake system of an electric bulldozer converted from a diesel bulldozer according to claim 1, characterized in that: A retractable circular groove (6) is provided at the rear of the sealing disc (2); an L-shaped circular groove frame (7) is fixedly connected to the edge side of the inner cavity of the retractable circular groove (6) via a fixing block, and a plurality of L-shaped circular groove frames (7) are arranged at equal intervals; a rebounding rod (8) is slidably mounted on the inner side of the L-shaped circular groove frame (7); and a first friction plate (9) used in conjunction with the first brake disc (4) is fixedly connected between the rear ends of the plurality of rebounding rods (8).

3. The control brake system of an electric bulldozer converted from a diesel bulldozer according to claim 2, characterized in that: A first spring (10) is sleeved on the surface of the rebound lever (8) and located on the front side of the L-shaped circular groove frame (7), and a coil (11) used in conjunction with the first friction plate (9) is arranged between the outer sides of a plurality of the L-shaped circular groove frames (7) and located inside the retracting circular groove (6).

4. The control brake system of an electric bulldozer converted from a diesel bulldozer according to claim 2, characterized in that: The outer circumference of the surface of the sealing disk (2) is provided with a circular sleeve hole (12) penetrating into the interior of the brake housing (1), and a plurality of the circular sleeve holes (12) are arranged at equal intervals. The outer circumference of the rear portion of the inner cavity of the brake housing (1) is fixedly connected to a threaded insert (13) used in conjunction with the circular sleeve hole (12) through a fixing block, and the number of the threaded insert (13) is the same as the number of the circular sleeve holes (12). The inner side of the circular sleeve hole (12) is provided with a threaded bolt (14) used in conjunction with the threaded insert (13).

5. The control brake system of an electric bulldozer converted from a diesel bulldozer according to claim 4, characterized in that: The side of the threaded insert (13) close to the second brake disc (5) is fixedly connected to the limit storage frame (15) through an opening, and the side of the limit storage frame (15) close to the second brake disc (5) is slidably mounted with an L-shaped rebound plate (16) through the opening, and a second spring (18) is fixedly connected between the L-shaped rebound plate (16) and the surface of the threaded insert (13).

6. The control brake system of an electric bulldozer converted from a diesel bulldozer according to claim 5, characterized in that: One end of the L-shaped rebound plate (16) located inside the position limiting storage frame (15) is fixedly connected to a curved surface stopper (17) used in conjunction with the threaded bolt (14), and a conical head (23) used in conjunction with the curved surface stopper (17) is provided at the rear end of the threaded bolt (14).

7. The control brake system of an electric bulldozer converted from a diesel bulldozer according to claim 6, characterized in that: A transverse slide bar (19) is slidably mounted on the surface of the L-shaped rebound plate (16) through an opening, and a second friction plate (20) used in conjunction with the second brake disc (5) is fixedly connected to the bottom of the transverse slide bar (19) through a bracket, and a third spring (21) is fixedly connected between the second friction plate (20) and the L-shaped rebound plate (16), and a pressure-bearing block (22) used in conjunction with the first friction plate (9) is fixedly connected to the front end of the transverse slide bar (19).

8. An electric bulldozer modified from a diesel bulldozer, characterized in that: The electric bulldozer converted from a diesel bulldozer comprises a control braking system for the electric bulldozer according to any one of claims 1-7.

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