CN220374273U - Anti-slip mechanism of battery box - Google Patents
Anti-slip mechanism of battery box Download PDFInfo
- Publication number
- CN220374273U CN220374273U CN202321899721.1U CN202321899721U CN220374273U CN 220374273 U CN220374273 U CN 220374273U CN 202321899721 U CN202321899721 U CN 202321899721U CN 220374273 U CN220374273 U CN 220374273U
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- wedge block
- battery box
- block
- wedge
- mounting seat
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- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000010354 integration Effects 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses an anti-slip mechanism of a battery box, which comprises a plurality of fasteners, wherein each fastener comprises a wedge block mounting seat and a wedge block; the wedge block mounting seat is arranged on the outer side wall of the collet bracket, and the wedge block is clamped between the inner wall of the wedge block mounting seat and the outer side wall of the battery box collet; the fasteners are matched to realize the function of preventing the battery box from slipping. The utility model has simple structure, convenient installation and easy integration, and can effectively lock the battery box on the turntable, thereby further improving the safety and stability of the equipment.
Description
Technical Field
The utility model relates to the technical field of engineering machinery structures, in particular to an anti-slip mechanism of a battery changing box for an electric excavator.
Background
The electric excavator mainly comprises three forms of charging, dragging and replacing, the former two electric excavators are currently put into market for small-batch products, the replacing excavator is currently in a development stage, and the main difficulties are concentrated on fixing a battery pack and connecting reliability of a replacing box and a turntable.
Referring to fig. 1, when the battery box 1 is mounted on the turntable 3, the battery box bottom bracket 2 at the bottom of the battery box 1 is connected with the bracket 4 on the turntable 3 through bolts; the power exchange box 1 and the power exchange box bottom support 2 are locked by a locking oil cylinder, a coarse positioning upright post, a fine positioning pin and the like, and as the power exchange box 1 and the power exchange box bottom support 2 are not completely locked, certain gaps are reserved between a locking oil cylinder lock tongue and a power exchange box beam and between the coarse positioning upright post and the power exchange box beam, so that the power exchange box 2 shakes relatively seriously relative to the turntable 3 in the working process of the excavator; because the electric box bottom bracket 2 and the bottom bracket 4 are locked by bolts, the bolts are easy to slip and lose efficacy after long-time use under shaking conditions, and shear fracture occurs, so that the electric box 2 cannot be firmly fixed on the turntable 3, and potential safety hazards exist.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, provides an anti-slip mechanism for a battery box, and solves the technical problem that the reliability of connection between the battery box and a turntable in the prior art is low
In order to solve the technical problems, the utility model is realized by adopting the following technical scheme:
the utility model provides an anti-slip mechanism of a battery box, which comprises a plurality of fasteners, wherein each fastener comprises a wedge block mounting seat and a wedge block;
the wedge block mounting seat is arranged on the outer side wall of the collet bracket, and the wedge block is clamped between the inner wall of the wedge block mounting seat and the outer side wall of the battery box collet; the fasteners are matched to realize the function of preventing the battery box from slipping.
Optionally, the wedge mounting seat is of an L-shaped structure; the L-shaped structure comprises a horizontal block and an inclined block; one end of the horizontal block is connected to the side wall of the bottom bracket, and the other end is connected with the inclined block.
Optionally, the inclined plane of the wedge block is attached to the inclined plane of the inclined block in the wedge block mounting seat.
Optionally, one end of the outer wall surface of one side of the inclined block far away from the collet support is provided with an inclined surface, and the other end of the inclined block is provided with a plane perpendicular to the horizontal block.
Optionally, the wedge block is provided with a through hole, the horizontal block of the wedge block mounting seat is provided with a threaded hole, and the screw rod of the mounting bolt passes through the through hole and then is screwed on the threaded hole; when the screw rod of the mounting bolt passes through the through hole, a gap exists between the outer peripheral wall of the screw rod and the inner peripheral wall of the through hole.
Optionally, a shim plate is also included that is interposed between the washer of the mounting bolt and the top surface of the wedge.
Optionally, the wedge block mounting seats are pairwise and are symmetrically distributed on the peripheral outer walls of the collet bracket in an axial symmetry manner.
Compared with the prior art, the utility model has the following beneficial effects:
according to the anti-slip mechanism provided by the utility model, the wedge-shaped blocks of the fasteners are clamped between the inner wall of the wedge-shaped block mounting seat and the outer side wall of the battery box collet, and the plurality of fasteners are matched to realize the function of preventing the battery box from slipping, so that the problem that the bolts between the battery box collet and the collet bracket are easy to slip and lose efficacy after long-time working in the working process of the excavator can be solved, and the bolts of the battery box collet are not subjected to shearing force of upper and lower workpieces before the mounting bolts of the wedge-shaped blocks lose efficacy due to the locking of the battery box collet, so that shearing fracture is not easy to occur, and the use condition of the bolts of the battery box collet is effectively improved.
In addition, the wedge block has a tendency of inward displacement due to the influence of the pressure and the inclined plane of the mounting bolt, and the through hole with larger reserved gap is formed in the wedge block, so that the wedge block can be effectively prevented from generating shearing force on the mounting bolt of the wedge block, and the service life of the mounting bolt of the wedge block is prolonged; the utility model has simple structure, convenient installation and easy integration, can effectively lock the battery box on the rotary table, further improves the safety and stability of the equipment, and is suitable for popularization and use.
Drawings
FIG. 1 is a schematic view of an installation structure between a power exchange box and a turntable in the background art;
fig. 2 is a schematic structural diagram of an anti-slip mechanism of a battery box according to an embodiment of the present utility model;
fig. 3 is a schematic structural diagram of a battery box anti-slip mechanism for locking a battery box on a turntable according to an embodiment of the present utility model;
FIG. 4 is a force analysis diagram of a fastener provided by an embodiment of the present utility model;
FIG. 5 is a schematic dimensional view of a wedge mount provided in an embodiment of the present utility model;
fig. 6 is a schematic size diagram of a wedge provided by an embodiment of the present utility model.
In the figure: 1. a battery changing box; 2. a battery box bottom bracket; 3. a turntable; 4. a bottom bracket; 5. wedge block mounting seats; 6. wedge blocks; 7. installing a bolt; 8. a gasket; 9. a backing plate; 10. a fastener.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 2 and 3, the anti-slip mechanism for the battery box provided by the embodiment of the utility model comprises a plurality of fasteners 10, wherein the fasteners 10 comprise wedge block installation seats 5 and wedge blocks 6; the wedge block mounting seat 5 is arranged on the outer side wall of the bottom bracket support 4, and the wedge block 6 is clamped between the inner wall of the wedge block mounting seat 5 and the outer side wall of the battery box bottom bracket 2 through the mounting bolt 7; the fasteners 10 are matched to realize the function of preventing the power exchange box 1 from slipping; the problem that bolts between the battery box bottom support 2 and the bottom support bracket 4 are easy to slip and lose efficacy after long-time working in the working process of the excavator can be solved, and because the battery box bottom support 2 is locked, the bolts cannot be subjected to shearing force of upper and lower workpieces before the installation bolts 7 of the wedge-shaped blocks lose efficacy, shearing fracture is not easy to occur, and the using condition of the bolts is effectively improved.
As an embodiment of the present utility model, referring to fig. 2, the wedge mount 5 has an L-shaped structure including a horizontal block and an inclined block, one end of the horizontal block is connected to a side wall of the shoe bracket 4, and the other end is connected to the inclined block; the wedge block 6 is of a right trapezoid structure, and the inclination of the inclined surface of the wedge block 6 is consistent with the inclination of the inner inclined surface of the wedge block mounting seat 5; wherein, the one end that the outer wall surface of slope piece one side of keeping away from collet support 4 sets up to the inclined plane, and the other end sets up to with horizontal piece vertically plane, makes the structure more exquisite to save the space of the installation that anti-skidding moved the mechanism to occupy, further save material and cost.
Further, the wedge block 6 provided in this embodiment is provided with a through hole, the horizontal block of the wedge block mounting seat 5 is provided with a threaded hole, and the screw of the mounting bolt 7 passes through the through hole and then is screwed on the threaded hole; when the screw rod of the mounting bolt 7 passes through the through hole, a gap exists between the outer peripheral wall of the screw rod and the inner peripheral wall of the through hole; furthermore, a backing plate 9 is provided between the washer 8 of the mounting bolt 7 and the top surface of the wedge 6 to increase the bearing surface. Because wedge 6 receives mounting bolt 7 pressure and inclined plane influence, there is the trend of inwards displacement, and this embodiment is through seting up the great through-hole in clearance on the wedge 6, can prevent effectively that wedge 6 from producing the shearing force to its mounting bolt 7.
The following is a stress analysis of the fastener 10 provided by the utility model with reference to fig. 4, and if the battery box base 2 and the wedge block mounting seat 5 are both rigid bodies, the wedge block 6 is elastically shaped under the action of the pretightening force of the mounting bolt 7: σ=eε=eΔl/L; in the formula, sigma is stress, E is elastic modulus, deltaL is size change quantity, L is size before deformation, and the formula shows that under the condition of certain stress, the smaller the size L before deformation, the smaller the size change quantity DeltaL, the smaller the offset between the through hole axis of the wedge block 6 and the axis of the mounting bolt 7, and the less easy the wedge block 6 is to interfere with the mounting bolt 7 in the use process, so the smaller the compressed size L of the wedge block 6 is, but due to the fact that the through hole is required to be opened by the wedge block 6, the proper size is required to be selected under the consideration of the self strength of the wedge block 6, and the clearance value between the through hole and the mounting bolt 7 is larger than the size change quantity DeltaL.
In addition, the force transmission efficiency of the mounting bolt 7 is influenced by the slope of the inclined plane of the wedge mounting seat 5 and the friction coefficient of the contact surface, the larger the slope of the inclined plane is, the larger the force transmission efficiency of the mounting bolt 7 is, the higher the machining precision requirement of the wedge mounting seat 5 is, and the larger the influence of the inclined plane machining error on the length of the mounting bolt 7 screwed into the threaded hole is; in fig. 4, F is a bolt pretightening force, fn is a supporting force between the wedge block 6 and the wedge block mounting seat 5, ff is a friction force between the wedge block 6 and the wedge block mounting seat 5, and θ is an included angle between an inclined plane of the wedge block mounting seat 5 and a horizontal plane; from the force analysis, it is possible to: f/fnx=k+1/tan θ; wherein: k is the friction coefficient between the two inclined planes, fnx is the clamping force of the butt-joint electric box bottom bracket 2 provided by the wedge-shaped block 6, and a proper inclined plane angle is selected according to the maximum pretightening force and simulation result of the mounting bolt 7 and the clamping force required by the electric box bottom bracket 2.
As an embodiment of the present utility model, referring to fig. 5 and 6, an internal angle formed by a horizontal block and an inclined block of the wedge mounting seat 5 is 110 degrees; the whole length of the wedge block mounting seat 5 is set to be 100mm, the height is set to be 120mm, and the width is set to be 80mm; the height of the horizontal block is set to be 50mm; correspondingly, the whole length of the wedge-shaped block 6 is set to be 80mm, the height is set to be 55mm, and the width is set to be 80mm; and chamfering is carried out at each right angle of the wedge mounting seat 5 and the wedge 6, the aperture of the threaded hole is set to 20mm, and the aperture of the through hole is set to 26mm.
Referring to fig. 3, the number of fasteners 10 provided in this embodiment is preferably 6; 6 wedge block mounting seats 5 are welded around the base bracket 4; the wedge block mounting seats 5 are arranged in pairs and are axially symmetrically distributed, one pair is respectively arranged on two shorter outer side walls in the collet support 4, and the other pair is respectively arranged at two ends of two longer outer side walls in the collet support 4.
According to the embodiment, through the inclined contact surface between the wedge block 6 and the wedge block mounting seat 5, the downward tightening pressure of the mounting bolt 7 is converted into the inward pressure, so that the battery box bottom bracket 2 is held tightly, slippage is prevented from being generated between the battery box bottom bracket 2 and the bottom bracket 4, the bolt between the battery box bottom bracket 2 and the bottom bracket 3 cannot be subjected to shearing force of an upper workpiece and a lower workpiece before the mounting bolt 7 of the wedge block 6 fails, shearing fracture is not easy to occur, the using condition of the bolt is effectively improved, and the reliability of connection between the battery box 1 and the turntable 3 is further improved.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (7)
1. The anti-slip mechanism of the battery changing box is characterized by comprising a plurality of fasteners (10), wherein the fasteners (10) comprise wedge block installation seats (5) and wedge blocks (6);
the wedge block mounting seat (5) is arranged on the outer side wall of the bottom bracket support (4), and the wedge block is clamped between the inner wall of the wedge block mounting seat (5) and the outer side wall of the battery box bottom bracket (2); the fasteners (10) are matched to realize the function of preventing the battery box (1) from slipping.
2. The battery box anti-slip mechanism according to claim 1, wherein the wedge block mounting seat (5) is of an L-shaped structure; the L-shaped structure comprises a horizontal block and an inclined block; one end of the horizontal block is connected to the side wall of the bottom bracket support (4), and the other end is connected with the inclined block.
3. The battery box anti-slip mechanism according to claim 2, wherein the inclined surface of the wedge block (6) is attached to the inclined surface of the inclined block in the wedge block mounting seat (5).
4. A battery box anti-slip mechanism according to claim 2 or 3, wherein one end of the outer wall surface of the inclined block far away from one side of the shoe support (4) is provided with an inclined surface, and the other end is provided with a plane perpendicular to the horizontal block.
5. The anti-slip mechanism of the battery box according to claim 2, wherein the wedge block (6) is provided with a through hole, the horizontal block of the wedge block mounting seat (5) is provided with a threaded hole, and a screw rod of the mounting bolt (7) passes through the through hole and is screwed on the threaded hole; when the screw rod of the mounting bolt (7) passes through the through hole, a gap exists between the outer peripheral wall of the screw rod and the inner peripheral wall of the through hole.
6. The battery box anti-slip mechanism according to claim 1, further comprising a backing plate (9), the backing plate (9) being padded between a washer (8) of the mounting bolt (7) and a top surface of the wedge block (6).
7. The anti-slip mechanism of the battery box according to claim 1, wherein the wedge block mounting seats (5) are arranged in pairs and are axially symmetrically distributed on the peripheral outer wall of the bottom bracket support (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321899721.1U CN220374273U (en) | 2023-07-19 | 2023-07-19 | Anti-slip mechanism of battery box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321899721.1U CN220374273U (en) | 2023-07-19 | 2023-07-19 | Anti-slip mechanism of battery box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220374273U true CN220374273U (en) | 2024-01-23 |
Family
ID=89561296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321899721.1U Active CN220374273U (en) | 2023-07-19 | 2023-07-19 | Anti-slip mechanism of battery box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220374273U (en) |
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2023
- 2023-07-19 CN CN202321899721.1U patent/CN220374273U/en active Active
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