CN203048532U - Brake device of sliding hopper and aerial ladder using brake device of sliding hopper - Google Patents
Brake device of sliding hopper and aerial ladder using brake device of sliding hopper Download PDFInfo
- Publication number
- CN203048532U CN203048532U CN 201220596885 CN201220596885U CN203048532U CN 203048532 U CN203048532 U CN 203048532U CN 201220596885 CN201220596885 CN 201220596885 CN 201220596885 U CN201220596885 U CN 201220596885U CN 203048532 U CN203048532 U CN 203048532U
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- China
- Prior art keywords
- sliding hopper
- guide rail
- trailer coupling
- brake
- brake gear
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Abstract
The utility model discloses a brake device of a sliding hopper and an aerial ladder using the brake device of the sliding hopper. The sliding hopper is arranged on a guide rail, and is driven by a sliding hopper driving device to move along the guide rail, the brake device comprises a rotary shaft, a brake wheel, a connecting plate, a first traction mechanism and a second traction mechanism, the rotary shaft is rotatably arranged on the sliding hopper, the brake wheel and the connecting plate are fixedly arranged on the rotary shaft and can rotate along with the rotary shaft, the first end of the first traction mechanism is fixedly arranged on the connecting plate, the second end of the first traction mechanism is fixedly arranged on the sliding hopper, the first end of the second traction mechanism is fixedly arranged on the connecting plate, and the second end of the second traction mechanism is connected with the sliding hopper driving device. When the second end of the second traction mechanism is disengaged from the sliding hopper driving device, the first traction device drives the rotary shaft to rotate in the first direction, and then the brake wheel is in contact with the guide rail, so braking is realized. The brake device of the sliding hopper has the advantages that the structure for realizing braking is simple, and implementation is easy.
Description
Technical field
The utility model relates to a kind of aerial ladder that is applied to the brake gear of the sliding hopper in the heavy construction equipment and uses the brake gear of this sliding hopper.
Background technology
Aerial ladder truck is a kind of of fire extinguishing tanker, and car is provided with telescopic aerial ladder, and the confession fire fighter puts out a fire and succours trapped personnel.Further, on the aerial ladder sliding hopper device can be installed, be used for improving rescue ability.Wherein, brake gear is the important component part in the sliding hopper device, when unforeseen circumstances occurring, can realize the emergency braking to sliding hopper.
Please refer to Fig. 1, a kind of upward travel protector for lift produces moment of rotation by an end of power spring actuating cam body, and the recycling camming surface compresses slipper and realizes braking.When elevator meets accident, the force signal of extraneous input acts on the frizzen 1, frizzen 1 is pulled down, lever body 2 under the effect of pulling force around lever axon 3 clickwises, its other end promotes the wedge surface of control desk 4 lower ends, thereby drive control desk 4 around set pin 5 clickwises, thereby make an end of the cam body 6 under the projection that is restrained to control desk 4 break away from control desk 4, cam body 6 clockwise rotates around cam axon 8 under the elastic force of the power spring 7 that is in compressive state originally promotes, the camming surface that drives the other end promotes mobile slipper 9 to the motion of fixed brake plate 10 directions, thereby realizes the braking of elevator.
Realize the complex structure of braking in the above-mentioned upward travel protector for lift, be difficult for brake equipment is dismantled and safeguarded; Further, this brake equipment uses more spring, lever, makes the reliability of brake equipment reduce.
The utility model content
The technical matters that the utility model mainly solves provides a kind of brake gear of the sliding hopper that is easy to realize simple in structure.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the brake gear that a kind of sliding hopper is provided, this sliding hopper is arranged on the guide rail, and move at the driving lower edge of sliding hopper actuating device guide rail, brake gear comprises S. A., brake wheel, connecting panel, first trailer coupling and second trailer coupling, S. A. is rotatably installed on the sliding hopper, brake wheel and connecting panel are fixedly mounted on the S. A. and can rotate with S. A., first end of first trailer coupling is fixed on the connecting panel, second end of first trailer coupling is fixed on the sliding hopper, first end of second trailer coupling is fixed on the connecting panel, second end of second trailer coupling is connected with the sliding hopper actuating device, the draw that overcomes first trailer coupling with driven rotary axle under the effect of sliding hopper actuating device is rotated and is made brake wheel separate with guide rail around second direction, when second end of second trailer coupling separated with the sliding hopper actuating device, the first trailer coupling driven rotary axle rotated and makes brake wheel contact with guide rail around first direction.
Wherein, brake wheel is arranged at the top of guide rail, and contacts with the upper surface of guide rail when first direction rotates at the first trailer coupling driven rotary axle.
Wherein, brake gear further comprises a braking vane, and braking vane is fixedly installed in sliding hopper and is positioned at the below of guide rail, with the lower surface of contact guide rail when the upper surface of brake wheel contact guide rail and the jack-up sliding hopper.
Wherein, the upper surface of guide rail and lower surface are rough surface.
Wherein, the friction coefficient of the upper surface of brake wheel and guide rail is greater than the tangent value of the angle of contact of the upper surface of brake wheel and guide rail.
Wherein, first trailer coupling is spring.
Wherein, second trailer coupling is steel rope.
Wherein, brake gear further comprises a pulley, and pulley rotates and is installed on the sliding hopper, and is positioned at the below of connecting panel, so that second trailer coupling is led.
Wherein, connecting panel is triangle in obtuse angle, and S. A. is fixed on the obtuse angle end of obtuse-angled triangle, and first trailer coupling and second trailer coupling are individually fixed in the acute ends of obtuse-angled triangle.
For solving the problems of the technologies described above, another technical scheme that the utility model adopts is: a kind of aerial ladder is provided, comprises the brake gear of sliding hopper, guide rail and above-mentioned sliding hopper.
The beneficial effects of the utility model are: compared with prior art, the brake gear of the utility model sliding hopper by S. A. relative to the sliding hopper rotational fixation is set, be fixed to S. A. and with its brake wheel that rotates synchronously and connecting panel, one end of first trailer coupling is fixed on the connecting panel, the other end is fixed on the sliding hopper, rotate and make brake wheel contact with guide rail around first direction with the driven rotary axle, thereby the realization emergency braking is realized the simple in structure of braking, is easy to realize.
Description of drawings
Fig. 1 is a kind of structural representation of existing upward travel protector for lift;
Fig. 2 is a kind of structural representation of aerial ladder of the brake gear with sliding hopper;
Fig. 3 is the structural representation of sliding hopper brake gear under normal operating condition shown in Figure 2;
Fig. 4 is the structural representation of sliding hopper brake gear under the self-locking braking state shown in Figure 2;
Fig. 5 is the mechanical analysis figure of sliding hopper brake gear under the self-locking braking state shown in Figure 2.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
Please refer to Fig. 2, the utility model embodiment provides a kind of brake gear 5 that is applied to the sliding hopper in the heavy construction equipment (not shown).
Engineering equipment comprises aerial ladder 3, turntable 9 and oil cylinder 8.Wherein, aerial ladder 3 rotates and is mounted to turntable 9, thereby oil cylinder 8 connects aerial ladders 3 and turntable 9 and by elongation oil cylinder 8 aerial ladder 3 luffings carried out height rescue.
The sliding hopper actuating device comprises elevator 6, pulley 1 and steel rope 2.Elevator 6 is fixedly mounted on the ladder 10, and pulley 1 is rotatably installed in the top of aerial ladder 3, and steel rope 2 one ends are fixed to sliding hopper 7, and the other end is involved in the elevator 6 by the guiding of pulley 1.
When the unforeseen circumstances appearance, as steel rope 2 fractures in the sliding hopper actuating device or loosening, the brake gear 5 of sliding hopper can carry out emergency braking, avoids the generation of sliding hopper 7 tenesmus accidents, and the quilts in the protection sliding hopper 7 are rescued personnel.
Please refer to Fig. 3 to Fig. 4, the brake gear 5 of sliding hopper comprises S. A. 51, brake wheel 52, connecting panel 53, first trailer coupling 54 and second trailer coupling 55.
S. A. 51 is rotatably installed on the sliding hopper 7, and brake wheel 52 and connecting panel 53 are fixedly mounted on the S. A. 51 and can rotate with S. A. 51.In the present embodiment, connecting panel 53 is triangle in obtuse angle, and S. A. 51 is fixed on the obtuse angle end of obtuse-angled triangle.In the practical application, connecting panel 53 can be designed to different shapes, for example, and equilateral triangle, oblong etc.
First end of first trailer coupling 54 is fixed to an acute ends of obtuse-angled triangle connecting panel 53, and second end of first trailer coupling 54 is fixedly connected on the place, bottom of sliding hopper 7.In the present embodiment, first trailer coupling 54 is spring, can be the puller system of other form in the practical application.
First end of second trailer coupling 55 is fixed to another acute ends of obtuse-angled triangle connecting panel 53, second trailer coupling 55 second end be connected with steel rope 2 in the sliding hopper actuating device.Therefore, connecting panel 53 is subjected to the traction of first trailer coupling 54 and second trailer coupling 55 jointly.In the present embodiment, second trailer coupling 55 is steel rope, can be other forms of puller system in the practical application.
Please refer to Fig. 3, in the aerial ladder 3 normal uses, second trailer coupling 55 is strained by steel rope 2, and second trailer coupling, 55 pulling connecting panels 53 overcome the draw of first trailer coupling 54 with driven rotary axle 51 and further make S. A. 51 around second direction Y rotation and make brake wheel 52 separate with guide rail 4.Under this use state, the pulling force that second trailer coupling 55 puts on connecting panel 53 puts on the pulling force of connecting panel 53 much larger than first trailer coupling 54.Therefore, the torque of 55 pairs of S. A.s of second trailer coupling, 51 generations is much larger than the torque of 54 pairs of S. A.s of first trailer coupling, 51 generations.
Please refer to Fig. 4, when fracture or unforeseen circumstances such as loosening appear in the steel rope 2 in the sliding hopper actuating device, the pulling force that second trailer coupling 55 puts on connecting panel 53 suddenly disappears, first trailer coupling, 54 pulling connecting panels 53 and driven rotary axle 51 are around first direction X rotation, and brake wheel 52 rotates until contacting with guide rail 4 with brake wheel 52 with S. A. 51.Thereby the brake gear 5 of sliding hopper 7 is realized sliding hopper 7 with respect to the emergency braking function of guide rail 4, and the sliding hopper falling accident takes place when avoiding steel rope 2 fractures.
Further, brake gear 5 also comprises a braking vane 56, and braking vane 56 is fixedly mounted on the sliding hopper 7 and is positioned at the below of guide rail 4.In the present embodiment, brake wheel 52 has camming surface (not indicating), therefore after brake wheel 52 touches the upper surface of guide rail 4, first trailer coupling, 54 pulling connecting panels 53 and driven rotary axle 51 are further when first direction X rotates, along with the contact surface of brake wheel 52 and guide rail 4 size apart from the axle center of S. A. 51 progressively increases, brake wheel 52 slowly jack-up sliding hopper 7 until the lower surface of braking vane 56 contact guide rails 4, thereby make braking vane 56 clamp the upper and lower surface of guide rail 4 with brake wheel 52, the reliability of self-locking brake is strengthened.
Upper surface and the lower surface of guide rail 4 are preferably rough surface, and brake wheel 52 contact surfaces are preferably rough surface, are used for improving the friction coefficient between brake wheel 52 contact surfaces and guide rail 4 surfaces, further improve the emergency braking effect of the brake gear of sliding hopper.
Further, brake gear 5 also comprises a pulley 57, and pulley 57 is rotatably installed on the sliding hopper 7, and pulley 57 is positioned at the below of above-mentioned connecting panel 53, so that second trailer coupling 55 is led, thereby makes connecting panel 53 be easy to rotation.
In the practical application, the brake gear 5 of sliding hopper also can be applicable on the heavy construction equipment of other band guide rail 4 and sliding hopper 7, for example, and bucket elevator etc.
Please in the lump with reference to Fig. 5, when brake wheel 52 contacted with guide rail 4 upper surfaces, the contact point place that contacts with brake wheel 52 on the upper surface of guide rail 4 was subjected to the combined action of reaction of bearing N and friction force f.
The direction of reaction of bearing N is the power of jack-up sliding hopper 7 perpendicular to guide rail 4 upwards.The direction of friction force f is parallel to guide rail 4 and opposite to the direction of lower slider with sliding hopper 7, is to hinder sliding hopper 7 relative guide rails 4 to the power of lower slider, and the size of friction force f is brake wheel 52 and the friction coefficient u of guide rail 4 upper surfaces and the product of reaction of bearing N.That is f=uN.
Friction force f is the product of the arm of force K of friction force f and the S. A. 51 of friction force f with respect to the torque M 1 of S. A. 51; That is M1=f * K.Wherein arm of force K is the vertical distance of friction force f to S. A. 51 axle center.S. A. 51 around first direction X rotation, drives brake wheel 52 and clamps guide rail 4 under torque M 1 effect.
Reaction of bearing N is the product of the arm of force L of reaction of bearing N and the S. A. 51 of reaction of bearing N, i.e. M2=N * L with respect to the torque M 2 of S. A. 51.Wherein arm of force L is the vertical distance of reaction of bearing N to S. A. 51 axle center.S. A. 51 around second direction Y rotation, drives brake wheel 52 and breaks away from guide rail 4 under torque M 2 effects.
When brake wheel 52 contacts with guide rail 4 upper surfaces, if friction force f with respect to the torque M 1 of S. A. 51 greater than reaction of bearing N during with respect to the torque M 2 of S. A. 51, S. A. 51 is under torque M 1 effect, rotate around first direction X, be sliding hopper 7 guide rail 4 continuation downslides no longer relatively, the braking effect of the brake gear 5 of sliding hopper is better.Otherwise, if friction force f with respect to the torque M 1 of S. A. 51 less than reaction of bearing N during with respect to the torque M 2 of S. A. 51, S. A. 51 is under the effect of torque M 2, rotate around second direction Y, sliding hopper 7 relative guide rails 4 continue to glide, and the braking of the brake gear 5 of sliding hopper fails to obtain preferable braking effect.
Therefore, preferably, in the practical application condition of self-locking brake be torque M 1 greater than torque M 2, also namely:
f×K＞N×L
Again, current friction force f is: f=uN
And the pass of arm of force L and arm of force K is: L=Ktan θ (wherein θ is the angle of contact of brake wheel 52 and guide rail 4)
Can derive thus:
Therefore, as the friction coefficient u of brake wheel 52 and guide rail 4 contact surfaces during greater than the tangent value tan θ of the angle of contact θ of the upper surface of brake wheel 52 and guide rail 4, can realize better self-locking brake.
In the practical application, angle of contact θ can be arranged to different sizes, and brake wheel 52 also can be designed as multi-form rough surface with the contact surface of guide rail 4, and the condition that only need satisfy above-mentioned self-locking brake gets final product.
The utility model further provides a kind of aerial ladder, and aerial ladder comprises the brake gear of sliding hopper, guide rail and above-mentioned sliding hopper.
The beneficial effects of the utility model are: compared with prior art, the brake gear 5 of the utility model sliding hopper by S. A. 51 relative to sliding hopper 7 rotational fixation is set, be fixed to S. A. 51 and with its brake wheel that rotates synchronously 52 and connecting panel 53, one end of first trailer coupling 54 is fixed on the connecting panel 53, the other end is fixed on the sliding hopper 7, with driven rotary axle 51 around first direction X rotation and make brake wheel 52 contact with guide rail 4, thereby realization emergency braking, realize the simple in structure of braking, be easy to realize.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification sheets and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (10)
1. the brake gear of a sliding hopper, it is characterized in that, described sliding hopper is arranged on the guide rail, and the described guide rail operation in the driving lower edge of sliding hopper actuating device, described brake gear comprises S. A., brake wheel, connecting panel, first trailer coupling and second trailer coupling, described S. A. is rotatably installed on the described sliding hopper, described brake wheel and described connecting panel are fixedly mounted on the described S. A. and can rotate with described S. A., first end of described first trailer coupling is fixed on the described connecting panel, second end of described first trailer coupling is fixed on the described sliding hopper, first end of described second trailer coupling is fixed on the described connecting panel, second end of described second trailer coupling is connected with described sliding hopper actuating device, rotate and make described brake wheel separate with described guide rail around second direction under the effect of described sliding hopper actuating device, to drive draw that described S. A. overcomes described first trailer coupling, when second end of described second trailer coupling separated with described sliding hopper actuating device, described first trailer coupling drove described S. A. and rotates and make described brake wheel contact with described guide rail around first direction.
2. brake gear according to claim 1 is characterized in that, described brake wheel is arranged at the top of described guide rail, and drives described S. A. at described first trailer coupling and contact with the upper surface of described guide rail when described first direction rotates.
3. brake gear according to claim 2, it is characterized in that, described brake gear further comprises a braking vane, described braking vane is fixedly installed in described sliding hopper and is positioned at the below of described guide rail, contacts the lower surface of described guide rail during with the upper surface that contacts described guide rail at described brake wheel and the described sliding hopper of jack-up.
4. brake gear according to claim 3 is characterized in that, the upper surface of described guide rail and lower surface are rough surface.
5. according to any described brake gear of claim 1-4, it is characterized in that the friction coefficient of the upper surface of described brake wheel and described guide rail is greater than the tangent value of the angle of contact of the upper surface of described brake wheel and described guide rail.
6. brake gear according to claim 1 is characterized in that, described first trailer coupling is spring.
7. brake gear according to claim 1 is characterized in that, described second trailer coupling is steel rope.
8. brake gear according to claim 7 is characterized in that, described brake gear further comprises a pulley, and described pulley rotates and is installed on the described sliding hopper, and is positioned at the below of described connecting panel, so that described second trailer coupling is led.
9. brake gear according to claim 1, it is characterized in that, described connecting panel is triangle in obtuse angle, and described S. A. is fixed on the obtuse angle end of described obtuse-angled triangle, and described first trailer coupling and described second trailer coupling are individually fixed in the acute ends of described obtuse-angled triangle.
10. an aerial ladder is characterized in that, described aerial ladder comprises sliding hopper, guide rail and as any described brake gear of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220596885 CN203048532U (en) | 2012-11-13 | 2012-11-13 | Brake device of sliding hopper and aerial ladder using brake device of sliding hopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220596885 CN203048532U (en) | 2012-11-13 | 2012-11-13 | Brake device of sliding hopper and aerial ladder using brake device of sliding hopper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203048532U true CN203048532U (en) | 2013-07-10 |
Family
ID=48731511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220596885 Expired - Fee Related CN203048532U (en) | 2012-11-13 | 2012-11-13 | Brake device of sliding hopper and aerial ladder using brake device of sliding hopper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203048532U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963851A (en) * | 2012-11-13 | 2013-03-13 | 长沙中联消防机械有限公司 | Brake device of skid hopper and aerial ladder using brake device of skid hopper |
| CN105617583A (en) * | 2015-12-25 | 2016-06-01 | 长沙中联消防机械有限公司 | Roller device, slide bucket, slide bucket conveying device and fire engine |
-
2012
- 2012-11-13 CN CN 201220596885 patent/CN203048532U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963851A (en) * | 2012-11-13 | 2013-03-13 | 长沙中联消防机械有限公司 | Brake device of skid hopper and aerial ladder using brake device of skid hopper |
| CN102963851B (en) * | 2012-11-13 | 2016-03-02 | 长沙中联消防机械有限公司 | The brake gear of sliding hopper and use the aerial ladder of brake gear of this sliding hopper |
| CN105617583A (en) * | 2015-12-25 | 2016-06-01 | 长沙中联消防机械有限公司 | Roller device, slide bucket, slide bucket conveying device and fire engine |
| CN105617583B (en) * | 2015-12-25 | 2019-02-22 | 长沙中联消防机械有限公司 | Roller devices, sliding hopper, sliding hopper transmission device and fire fighting truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20151113 |
|
| EXPY | Termination of patent right or utility model |