CN211550337U - Fork truck braking device based on shape memory alloy - Google Patents
Fork truck braking device based on shape memory alloy Download PDFInfo
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- CN211550337U CN211550337U CN201921784109.3U CN201921784109U CN211550337U CN 211550337 U CN211550337 U CN 211550337U CN 201921784109 U CN201921784109 U CN 201921784109U CN 211550337 U CN211550337 U CN 211550337U
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- shape memory
- memory alloy
- heating
- type shape
- alloy spring
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Abstract
The utility model provides a based on shape memory alloy fork truck arresting gear which characterized in that: the forklift truck braking device structure comprises: the brake comprises a ceramic sliding block, a tire, a brake drum, a heating shrinkage type shape memory alloy spring, a brake shoe, a conducting wire, a friction plate, a ceramic connecting piece, a heating elongation type shape memory alloy spring, a bolt, a bearing pin, a first guide pipe and a second guide pipe. The utility model discloses the device lets in certain time and big or small electric current for shape memory alloy according to the on-the-spot condition demand to control fork truck's the traveling and stop. The device of the utility model is simple in structure, convenient to use, low cost.
Description
Technical Field
The utility model relates to a stopper technical field, concretely relates to based on shape memory alloy fork truck arresting gear.
Background
Brakes are widely used in the field of vehicle deceleration systems and brake systems, where the performance requirements for the brakes are mainly: the brake has the advantages of good brake stability, simple structure, low cost, and small size and mass. Therefore, how to improve the cost performance of the brake is an important development direction.
The brakes on the market are various and have different quality. Brakes are generally classified into drum brakes and disc brakes, and although the disc brakes have higher braking performance than the drum brakes, the disc brakes are more expensive than the drum brakes. The existing drum brake is large in size, heavy in weight, complex in structure and high in cost, mainly because a hydraulic system of the brake is complex and increases cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a to current arresting gear's shortcoming, provide a arresting gear based on shape memory alloy spring is driven, the device simple structure, low cost, the operation is reliable. The shape memory alloy springs used in the device are two shape memory alloy springs with different characteristics, namely an electrified heating contraction type and an electrified heating extension type, and under the action of the shape memory alloy springs, the brake of the wheel is controlled by controlling the brake shoe.
Arresting gear's structure includes: the brake comprises a ceramic sliding block, a tire, a brake drum, a heating shrinkage type shape memory alloy spring, a brake shoe, a conducting wire, a friction plate, a ceramic connecting piece, a heating elongation type shape memory alloy spring, a bolt, a bearing pin, a first guide pipe and a second guide pipe.
The ceramic sliding blocks are two insulating sliding blocks, the surfaces of two ends of each sliding block are smooth, the two sliding blocks are respectively fixed at the top ends of the brake shoes at two sides and are placed in the second guide pipes, and the two sliding blocks are fixed at two ends of a heating shrinkage type shape memory alloy spring in the second guide pipes.
The tire is a pneumatic tire which takes rubber materials as raw materials and has longitudinal patterns on the surface, the tire is supported by a brake drum to transfer traction force, and the tire has good elasticity and shock absorption, small rolling resistance and good adhesiveness.
When the vehicle needs to be braked, the heating extension type shape memory alloy spring is electrified to work, so that the friction plate is attached to the brake drum to generate friction, and the wheel is braked.
The heating contraction type shape memory alloy spring is placed in the second guide pipe, a small hole is formed in the second guide pipe, a conducting wire is connected to the power-on end of the shape memory alloy spring, the conducting wire penetrates out of the hole in the second guide pipe and is connected with an external power supply, and the spring is heated and contracted through power supply current to pull the brake shoe, so that the friction plate loosens the brake drum.
The brake shoe is in a semicircular arc shape, a friction plate, a ceramic connecting piece and a ceramic sliding block are fixed on the brake shoe, the brake shoe acts under the action of two shape memory alloy springs with different properties, namely a heating shrinkage type shape memory alloy spring and a heating elongation type shape memory alloy spring, and the gap between the friction plate and the brake drum is controlled.
The conducting wire is characterized in that the electrifying ends of the heating contraction type shape memory alloy spring and the heating extension type shape memory alloy spring are respectively connected with an external power supply, the conducting wire penetrates out of the holes of the first guide pipe and the second guide pipe after being connected with the electrifying ends, and the conducting wire can be selected from 1.5mm due to the fact that the current leading to the shape memory alloy spring is small2A copper core wire.
The friction plate is fixed on the brake shoe, the action of the friction plate is controlled through the brake shoe, and under the action of the friction plate, friction is generated between the brake drum and the friction plate, so that the movement of the wheel is controlled.
The ceramic connecting piece is an insulating connecting piece, and the moving stroke of the ceramic connecting piece in the first guide pipe is larger than the displacement of the heating elongation type shape memory alloy spring.
The heating extension type shape memory alloy spring is placed in the first guide pipe, a small hole is formed in the first guide pipe, a conducting wire is connected to the power-on end of the heating extension type shape memory alloy spring, the conducting wire penetrates out of the upper hole of the first guide pipe and is connected with an external power supply, and the spring is heated and extended through power supply current to push the brake shoe to enable the friction plate to rub the brake drum.
The bolt is used for fixing the bearing pin, two ends of the bearing pin are respectively fixed on the left brake shoe and the right brake shoe, and the tail end of the bolt is fixed at a non-rotating part in the wheel, so that the left brake shoe and the right brake shoe are reliably connected.
The bearing pin is used for connecting and supporting the left brake shoe and the right brake shoe.
The first guide tube and the second guide tube are made of an insulating material and used for guiding when the heating contraction type shape memory alloy spring and the heating extension type shape memory alloy spring act, and the inner diameters of the first guide tube and the first guide tube are slightly larger than the diameter of the shape memory alloy spring.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, a ceramic slide block 1, a tire 2, a brake drum 3, a heating contraction type shape memory alloy spring 4, a brake shoe 5, a conducting wire 6, a friction plate 7, a ceramic connecting piece 8, a heating extension type shape memory alloy spring 9, a bolt 10, a bearing pin 11, a first guide pipe 12 and a second guide pipe 13.
Advantageous effects
The utility model discloses use shape memory alloy spring as the drive, through external power supply electric current heating shape memory alloy spring, shape memory alloy produces the drive brake shoe that deforms, and the brake shoe passes through friction disc control brake drum to the braking of control wheel. Shape memory alloy is a neotype intelligent material, collects perception and driving function in an organic whole, and arresting gear's structure has not only been simplified in its application, can also satisfy the application occasion of small-size, consequently, the utility model discloses arresting gear is simple structure not only, convenient to use, but also reduce cost.
Detailed Description
The invention will be further described with reference to the following figures and examples:
example (b): referring to fig. 1, the forklift braking device comprises a ceramic sliding block 1, a tire 2, a brake drum 3, a heating shrinkage type shape memory alloy spring 4, a brake shoe 5, a lead wire 6, a friction plate 7, a ceramic connecting piece 8, a heating elongation type shape memory alloy spring 9, a bolt 10, a bearing pin 11, a first guide pipe 12 and a second guide pipe 13. The brake drum 3 and the tire 2 are integrated, the tire 2 moves along with the brake drum 3, the friction plate 7 is fixed on the brake shoe 5, and when the forklift is parked and stopped, the friction plate 7 is tightly contacted with the brake drum 3; when the forklift runs, a certain gap is formed between the friction plate 7 and the brake drum 3. The two states between the friction lining 7 and the brake drum 3 are achieved by applying a brief current to the shape memory alloys of two different characteristics. When the forklift is required to run, current is only needed to be applied to the heating shrinkage type shape memory alloy spring 4 for a certain time, the heating shrinkage type shape memory alloy spring 4 can contract when meeting heat under the action of the current, the ceramic slide block 1 drives the brake shoe 5 to contract inwards, so that the friction plate 7 on the brake shoe 5 is separated from the brake drum 3, and the forklift starts to run normally; when the forklift needs to be parked, current is only needed to be conducted to the heating and stretching type shape memory alloy spring 9 for a certain time, the heating and stretching type shape memory alloy spring 9 can stretch when meeting heat under the action of the current, the ceramic connecting piece 8 drives the brake shoe 5 to stretch outwards, the friction plate 7 on the brake shoe 5 is in contact friction with the brake drum 3, and the forklift starts to be parked.
The utility model discloses make full use of shape memory alloy has that drive power is big, the deformation volume is big, deformation precision is high, good reliability, response frequency is high, advantages such as low pressure drive, realizes the action of brake block through the current signal of control input, and this improves a lot than fork truck brake performance on the market, and the cost has also obtained the reduction, and the price/performance ratio obtains promotion by a wide margin, and market prospect is very wide.
Claims (9)
1. The utility model provides a based on shape memory alloy fork truck arresting gear which characterized in that: the forklift truck braking device structure comprises: the brake shoe comprises a ceramic sliding block (1), a brake drum (3), a heating and shrinking type shape memory alloy spring (4), a brake shoe (5), friction plates (7), a ceramic connecting piece (8), a heating and stretching type shape memory alloy spring (9), a bearing pin (11), a first guide pipe (12) and a second guide pipe (13), wherein the ceramic sliding block (1) is fixed at the top end of the brake shoe (5) in the second guide pipe (13) and is fixed at two ends of the heating and shrinking type shape memory alloy spring (4), the brake drum (3) supports a tire, the heating and shrinking type shape memory alloy spring (4) is arranged in the second guide pipe (13), the two ends of the heating and shrinking type shape memory alloy spring are used for fixing the ceramic sliding block (1), the brake shoe (5) is in a semi-circular arc shape, the friction plates (7) are fixed on the brake shoe (5), and the ceramic connecting piece (8) is in a, the upper part of the heating extension type shape memory alloy spring is sleeved in the first guide pipe (12) and fixed with the electrifying end of the heating extension type shape memory alloy spring (9), the lower part of the heating extension type shape memory alloy spring is connected and fixed with the brake shoe (5), the bearing pin (11) is used for connecting and supporting the left brake shoe (5) and the right brake shoe (5), the brake shoe (5) and the bearing pin (11) are fixed through bolts, the first guide pipe (12) and the second guide pipe (13) are used for guiding, and two ends of the heating extension type shape memory alloy spring (9) and the heating contraction type shape memory alloy spring (4) are connected with conducting wires.
2. The shape memory alloy-based forklift braking device according to claim 1, wherein: the ceramic sliding block (1) is an insulating sliding block, and the surfaces of two ends of the sliding block are smooth.
3. The shape memory alloy-based forklift braking device according to claim 1, wherein: the brake drum (3) is arranged between the friction plate (7) and the tire, when the vehicle runs, the heating shrinkage type shape memory alloy spring (4) is electrified to work, a gap is formed between the brake drum (3) and the friction plate (7) and is small, and when the vehicle needs to be braked, the heating elongation type shape memory alloy spring (9) is electrified to work, so that the friction plate (7) is attached to the brake drum (3) to generate friction, and the vehicle wheel is braked.
4. The shape memory alloy-based forklift braking device according to claim 1, wherein: the heating shrinkage type shape memory alloy spring (4) is connected with an external power supply at the electrified end, a small hole is formed in the second guide pipe (13), a lead penetrates out of the hole in the second guide pipe (13), and the spring is heated and shrunk through power supply current to pull the brake shoe (5) so that the friction plate (7) loosens the brake drum (3).
5. The shape memory alloy-based forklift braking device according to claim 1, wherein: the brake shoe (5) acts under the action of two shape memory alloy springs with different properties, namely a heating shrinkage type shape memory alloy spring (4) and a heating elongation type shape memory alloy spring (9), and the gap between the friction plate (7) and the brake drum (3) is controlled.
6. The shape memory alloy-based forklift braking device according to claim 1, wherein: and under the friction action of the friction plate (7), friction is generated between the brake drum (3) and the friction plate (7), so that the movement of the wheel is controlled.
7. The shape memory alloy-based forklift braking device according to claim 1, wherein: the ceramic connecting piece (8) is an insulating connecting piece, and the moving stroke of the ceramic connecting piece (8) in the first guide pipe (12) is larger than the displacement of the heating elongation type shape memory alloy spring (9).
8. The shape memory alloy-based forklift braking device according to claim 1, wherein: the heating extension type shape memory alloy spring (9) is connected with a lead through a small hole formed in the first guide pipe (12) and is connected with an external power supply, and the spring is heated and extended through power supply current to push the brake shoe (5) so that the friction plate (7) rubs the brake drum (3).
9. The shape memory alloy-based forklift braking device according to claim 1, wherein: the first guide tube (12) is made of an insulating material and used for guiding the heating and stretching type shape memory alloy spring (9) during action, and the inner diameter of the first guide tube (12) is slightly larger than that of the heating and stretching type shape memory alloy spring (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921784109.3U CN211550337U (en) | 2019-10-22 | 2019-10-22 | Fork truck braking device based on shape memory alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921784109.3U CN211550337U (en) | 2019-10-22 | 2019-10-22 | Fork truck braking device based on shape memory alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211550337U true CN211550337U (en) | 2020-09-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921784109.3U Expired - Fee Related CN211550337U (en) | 2019-10-22 | 2019-10-22 | Fork truck braking device based on shape memory alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211550337U (en) |
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2019
- 2019-10-22 CN CN201921784109.3U patent/CN211550337U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200922 Termination date: 20211022 |
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| CF01 | Termination of patent right due to non-payment of annual fee |