CN202802603U - Arm support variable-amplitude detection device and elevating fire truck - Google Patents
Arm support variable-amplitude detection device and elevating fire truck Download PDFInfo
- Publication number
- CN202802603U CN202802603U CN 201220447469 CN201220447469U CN202802603U CN 202802603 U CN202802603 U CN 202802603U CN 201220447469 CN201220447469 CN 201220447469 CN 201220447469 U CN201220447469 U CN 201220447469U CN 202802603 U CN202802603 U CN 202802603U
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- gear
- jib
- turntable
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Abstract
The utility model relates to an arm support variable-amplitude detection device and an elevating fire truck. The arm support variable-amplitude detection device comprises an angle sensor, and also comprises a first gear and a second gear, wherein the first gear is fixed on the main arm shaft of the arm support, the second gear is engaged with the first gear, and the central shaft of the angle sensor is fixed at the center of the second gear; the central shaft is overlapped with the rotating axis of the second gear; and an enclosure of the angle sensor is fixed on a rotary table. In the utility model, the first gear and the second gear in relative meshing rotation are arranged on the main arm shaft of the arm support and on the central shaft of the angle sensor fixed on the rotary table respectively; and in the structural form, the deformation of the arm support in the action process causes relatively little influence on the main arm shaft, and the main arm shaft does not deform greatly, thus the influence of the deformation of the arm support on the angle sensor is very limited, the central shaft of the angle sensor is prevented from deviating from the center of the enclosure, and meanwhile, the excessive stress is not formed to avoid the damage of the angle sensor.
Description
Technical field
The utility model relates to engineering machinery field, relates in particular to a kind of luffing range of cantilever support checkout gear and elevating fire truck.
Background technology
Existing huge Elevating platform fire truck has collapsible or flexible multistage steel frame as jib, is used for carrying working bucket load and fire monitor and sprays counter-force.Jib is connected by axle with turntable, and an end of turntable is installed jib, and the other end then is connected with subframe, can realize the revolution of 360 degree.Jib can rotate freely around axle, reaches the effect that jib rises and falls.
For existing huge Elevating platform fire truck, the jib quality is usually larger, and some weighs more than 30 ton, therefore in the motion process that jib rises and falls, will be varied to the situation of different amplitudes, and the control of car load and limit movement need that also corresponding difference is arranged.This measures the angle of luffing range of cantilever support accurately with regard to requiring, thereby realizes the better control and protection of car load.
As shown in Figure 1, be the structural representation of existing luffing range of cantilever support checkout gear, Fig. 2 is that the A direction is seen view in the past among Fig. 1.Wherein angular transducer 2a and cover 1a are installed between turntable 5a and the jib 6a, the center of angular transducer 2a and cover 1a all is on the pivot center 7a, wherein cover 1a is fixed on turntable 5a upward and covers angular transducer 2a, the shell of angular transducer 2a also is fixed on the turntable 5a, and the central shaft of angular transducer 2a is fixed on the installing plate 4a by connecting rod 3a, and installing plate 4a is fixed on the end of jib 6a.When jib rotates with respect to pivot center 7a, can drive installing plate 4a motion, and then the central shaft that drives the angular transducer 2a that connecting rod 3a connects rotates with respect to shell, angular transducer 2a can calculate according to the situation that relatively rotates between its shell and the central shaft movement angle of jib 6a thus, and when jib 6a reaches capacity the position, give controller and send corresponding signal and stop to hoist with control jib 6a.
Luffing range of cantilever support checkout gear shown in Fig. 1,2 exists following problem:
1, because jib can produce larger distortion in course of action, the central shaft that may spur angular transducer departs from the center of its shell, and larger effect of stress is arranged on angular transducer, easily cause the damage of angular transducer, and then cause measurement result inaccurate, the problems such as jitter.
2, because the installation site of this device is arranged on inner position, so that difficulty is installed.
3, this luffing range of cantilever support checkout gear only can be realized the measurement of jib angle; although it can send instruction at extreme position; if but its generation electronic failure causes spacing inefficacy, then may cause serious security incident, therefore there is certain potential safety hazard in the safeguard protection of this device.
The utility model content
The purpose of this utility model is to propose a kind of luffing range of cantilever support checkout gear and elevating fire truck, can carry out stable measurement to the angle of luffing range of cantilever support, avoids the damage of angular transducer.
For achieving the above object, the utility model provides a kind of luffing range of cantilever support checkout gear, be used for measuring jib with respect to the change angle of turntable, comprise angular transducer, wherein also comprise the first gear and the second gear, described the first gear is fixed on the principal arm axle of described jib, described the second gear and the engagement of described the first gear, and the central shaft of described angular transducer is fixed on the center of described the second gear, and described central shaft overlaps with the pivot center of described the second gear, and the shell of described angular transducer is fixed on the described turntable.
Further, described the first gear is fixed on the articulated position end face in the outer part of the relatively described jib of an end of described principal arm axle and turntable.
Further, described the first gear is fixed on the articulated position axis body in the inner part of the relatively described jib of described principal arm axle and turntable.
Further, also comprise limit switch, described limit switch is fixed on the described turntable, and the described limit switch extreme position that can rotate according to described the first gear that detects sends instruction to the controller of described jib.
Further, described limit switch is the cam position-limit mechanism, the first of described the first gear is cam structure, and the test side of described limit switch contacts with cam structure on described the first gear, and the scope that described cam structure arranges is determined by the extreme position that described the first gear rotates.
Further, described limit switch is approach switch, the radius of the first of described the first gear is different from material with the first of the radius of the second portion of described the second gear engagement or the first gear and is different from material with the second portion of described the second gear engagement, the first of the test side of described limit switch and described the first gear approaches, and the scope that the first of described the first gear arranges is determined by the extreme position that described the first gear rotates.
Further, the shell of described angular transducer is fixed on the described turntable by installing plate.
For achieving the above object, the utility model provides a kind of elevating fire truck, comprises jib and turntable, and described jib can rotate with respect to described turntable, wherein, also comprises aforesaid luffing range of cantilever support checkout gear.
Further, also comprise described jib is carried out the spacing controller of angle, can receive the instruction that described luffing range of cantilever support checkout gear sends.
Based on technique scheme, the utility model embodiment will be relative to meshing the principal arm axle that the first gear of rotating and the second gear be separately positioned on jib and being fixed on the central shaft of the angular transducer on the turntable, under this version, the distortion that jib produces in course of action is less on the impact of principal arm axle, itself can not occur larger distortion in the principal arm axle, therefore just guaranteed that also the distortion of jib is very limited on the impact of angular transducer, not only can not make the central shaft of angular transducer depart from the shell center, and can not form excessive stress and cause the damage of angular transducer; In another embodiment of the utility model, the first gear is fixed on the principal arm axle end face in the outer part, than the existing inner mode that arranges, be arranged on the outside and can reduce the jib variation to the impact of sensor as far as possible, and installation and maintenance is convenient; In the another embodiment of the utility model, on turntable, also be provided with limit switch, the extreme position that can rotate according to described the first gear that detects sends instruction to the controller of described jib, so just can carry out the spacing control of angle of jib, control in conjunction with the extreme position of angular transducer self again, form spacing dual fail-safe, more safe and reliable guarantee is provided.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of existing luffing range of cantilever support checkout gear.
Fig. 2 is that the A direction is seen view in the past among Fig. 1.
Fig. 3 is the structural representation of an embodiment of the utility model luffing range of cantilever support checkout gear.
Fig. 4 is the schematic diagram in A-A cross section among Fig. 3 embodiment.
The specific embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
As shown in Figure 3, the structural representation of an embodiment of the utility model luffing range of cantilever support checkout gear.With reference to figure 3 and in conjunction with the A-A cross section among Fig. 4, can see that the luffing range of cantilever support checkout gear in the present embodiment is used for measuring jib with respect to the change angle of turntable.Wherein, the luffing range of cantilever support checkout gear comprises angular transducer 4, the first gear 1 and the second gear 2, the first gear 1 is fixed on the principal arm axle 7 of jib (not shown), the second gear 2 and 1 engagement of the first gear, the central shaft of angular transducer 4 is fixed on the center of the second gear 2, and this central shaft overlaps with the pivot center of the second gear 4.The shell of angular transducer 4 is fixed on the turntable 8.
Can find out that on scheming principal arm axle 7 is arranged in the hinge hole on the turntable 8, jib can drive principal arm axle 7 and rotate certain angle with respect to turntable 8.The distortion that jib in the existing luffing range of cantilever support checkout gear occurs will directly drive the central shaft generation deflection of the angular transducer that its end fixes, cause excessive stress, and when jib integral body deforms among Fig. 3, self cause the impact of distortion less on principal arm axle 7, therefore the first gear 1 that is fixed on the principal arm axle 7 can depart from the centre of gyration hardly, even if the first gear is along with the distortion of principal arm axle 7 self departs from the centre of gyration, owing to be subject to the restriction of the hinge hole on the turntable 8, deformation extent is also smaller, and this distortion does not act directly on the angular transducer 4 that is connected with the second gear 2.So the combination that present embodiment adopts can guarantee that angular transducer can not cause damage because the jib distortion.
In the embodiment of Fig. 3 and Fig. 4, the first gear 1 is fixed on the articulated position end face in the outer part of the relative jib of an end of principal arm axle 7 and turntable 8.Accordingly, the second gear 2 and angular transducer all are arranged on the outside of turntable.The outside that gear and angular transducer are arranged on the articulated position of turntable can further reduce jib and change impact on sensor, and convenient in installation and maintenance with respect to the inboard set-up mode of existing turntable.
In another kind of embodiment, also the first gear can be fixed on the articulated position axis body in the inner part of the relative jib of principal arm axle and turntable.Accordingly, the second gear and angular transducer all are arranged on the inboard of turntable, and this mode also can be carried out stable measurement to the angle of luffing range of cantilever support, avoids the damage of angular transducer.
In the embodiment of Fig. 3 and Fig. 4, can further be increased in and be fixedly installed limit switch 6 on the turntable 8, be used for the extreme position that rotates according to the first gear 1 that detects to send instruction to the controller of jib.The extreme position here is usually relevant with the rotation safe range of jib, when reaching the limit of place value or overstep the extreme limit the position, may cause potential safety hazard or cause security incident.
Shown in Fig. 3 and Fig. 4 is the limit switch that a kind of cam position-limit mechanism is realized, wherein the first of the first gear 1 is cam structure, and the test side 9 of limit switch 3 contacts with cam structure on the first gear 1, and the scope that cam structure arranges is determined by the extreme position that the first gear 1 rotates.When turntable 8 rotated with respect to principal arm axle 7, turntable 8 drove limit switch 3 fixed thereon and also rotates around principal arm axle 7, and this moment slides in the part of the cam structure of the first gear 1 in the test side 9 of limit switch 3, and this moment, limit switch 3 was closure state.And when test side 9 breaks away from cam structure, limit switch 3 is converted to off-state, this moment, limit switch 3 sent a notification instruction to the controller of jib, so that controller in time controls the change angle of jib, thereby avoided potential safety hazard to produce or the appearance of security incident.
Angular transducer self is along with the second gear is measured jib with respect to the change angle of turntable around the rotation of the first gear, also can measure the extreme angles position, to avoid the generation of security incident, this electronic limit mode exists to break down and causes the possibility that lost efficacy, therefore the replenishing of mechanical position limitation of electronic limit mode can be provided by this mechanical type limit switch that increases the cam position-limit mechanism, form spacing dual fail-safe, thus the safety coefficient when promoting widely the jib operation.
In another embodiment, limit switch can also adopt approach switch, in order effectively to identify safe range, the radius of the first of first gear that the test side with limit switch can be approached is arranged to be different from the radius of the second portion that meshes with the second gear, by the difference of radius, so that the detected distance in test side changes to identify and whether breaks away from safe range.Also the material of the first of first gear that the test side approached of limit switch can be arranged to be different from the material with the second portion of described the second gear engagement, for example the material difference of iron and steel and nylon identifies whether break away from safe range by the curtage that detects.Can be determined by the extreme position that the first gear rotates for the scope that the first on the first gear is set.
In Fig. 3 and Fig. 4, the shell of angular transducer 4 can be fixed on the turntable 8 by installing plate 5, in order to adapt to the principal arm axle with respect to the diverse location of turntable.
Illustrated each the utility model luffing range of cantilever support checkout gear embodiment from the front, these luffing range of cantilever support checkout gears all can be realized the angle of luffing range of cantilever support is carried out stable measurement, avoid the damage of angular transducer.Accordingly, the utility model luffing range of cantilever support checkout gear embodiment can be widely used in the various engineering machinery that need luffing range of cantilever support control, especially be fit to be applied in the elevating fire truck, this elevating fire truck comprises jib and turntable, jib can rotate with respect to described turntable, can realize the angle of luffing range of cantilever support is carried out stable measurement by aforesaid luffing range of cantilever support checkout gear is installed, avoid the damage of angular transducer.
Spacing in order better jib to be carried out angle, elevating fire truck can also comprise described jib is carried out the spacing controller of angle, can receive the instruction that described luffing range of cantilever support checkout gear sends.
Should be noted that at last: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (9)
1. luffing range of cantilever support checkout gear, be used for measuring jib with respect to the change angle of turntable, comprise angular transducer, it is characterized in that: also comprise the first gear and the second gear, described the first gear is fixed on the principal arm axle of described jib, described the second gear and the engagement of described the first gear, and the central shaft of described angular transducer is fixed on the center of described the second gear, and described central shaft overlaps with the pivot center of described the second gear, and the shell of described angular transducer is fixed on the described turntable.
2. luffing range of cantilever support checkout gear according to claim 1 is characterized in that, described the first gear is fixed on the articulated position end face in the outer part of the relatively described jib of an end of described principal arm axle and turntable.
3. luffing range of cantilever support checkout gear according to claim 1 is characterized in that, described the first gear is fixed on the articulated position axis body in the inner part of the relatively described jib of described principal arm axle and turntable.
4. according to claim 1 and 2 or 3 described luffing range of cantilever support checkout gears, it is characterized in that, also comprise limit switch, described limit switch is fixed on the described turntable, and the described limit switch extreme position that can rotate according to described the first gear that detects sends instruction to the controller of described jib.
5. luffing range of cantilever support checkout gear according to claim 4, it is characterized in that, described limit switch is the cam position-limit mechanism, the first of described the first gear is cam structure, and the test side of described limit switch contacts with cam structure on described the first gear, and the scope that described cam structure arranges is determined by the extreme position that described the first gear rotates.
6. luffing range of cantilever support checkout gear according to claim 4, it is characterized in that, described limit switch is approach switch, the radius of the first of described the first gear is different from material with the first of the radius of the second portion of described the second gear engagement or the first gear and is different from material with the second portion of described the second gear engagement, the first of the test side of described limit switch and described the first gear approaches, and the scope that the first of described the first gear arranges is determined by the extreme position that described the first gear rotates.
7. luffing range of cantilever support checkout gear according to claim 1 is characterized in that, the shell of described angular transducer is fixed on the described turntable by installing plate.
8. an elevating fire truck comprises jib and turntable, and described jib can rotate with respect to described turntable, it is characterized in that, also comprises the arbitrary described luffing range of cantilever support checkout gear of claim 1 ~ 7.
9. elevating fire truck according to claim 8 is characterized in that, also comprises described jib is carried out the spacing controller of angle, can receive the instruction that described luffing range of cantilever support checkout gear sends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220447469 CN202802603U (en) | 2012-09-05 | 2012-09-05 | Arm support variable-amplitude detection device and elevating fire truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220447469 CN202802603U (en) | 2012-09-05 | 2012-09-05 | Arm support variable-amplitude detection device and elevating fire truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202802603U true CN202802603U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220447469 Withdrawn - After Issue CN202802603U (en) | 2012-09-05 | 2012-09-05 | Arm support variable-amplitude detection device and elevating fire truck |
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| Country | Link |
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| CN (1) | CN202802603U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793992A (en) * | 2012-09-05 | 2012-11-28 | 徐州重型机械有限公司 | Arm support variable-amplitude detection device and elevating fire truck |
| CN104215211A (en) * | 2014-09-30 | 2014-12-17 | 徐州重型机械有限公司 | Arm support variable-amplitude angle detection device and method |
| CN104283152A (en) * | 2014-10-08 | 2015-01-14 | 国家电网公司 | Self-lifting rotary insulation cage |
-
2012
- 2012-09-05 CN CN 201220447469 patent/CN202802603U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793992A (en) * | 2012-09-05 | 2012-11-28 | 徐州重型机械有限公司 | Arm support variable-amplitude detection device and elevating fire truck |
| CN102793992B (en) * | 2012-09-05 | 2015-08-19 | 徐州重型机械有限公司 | Arm support variable-amplitude detection device and elevating fire truck |
| CN104215211A (en) * | 2014-09-30 | 2014-12-17 | 徐州重型机械有限公司 | Arm support variable-amplitude angle detection device and method |
| CN104283152A (en) * | 2014-10-08 | 2015-01-14 | 国家电网公司 | Self-lifting rotary insulation cage |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130320 Effective date of abandoning: 20150819 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130320 Effective date of abandoning: 20150819 |
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| RGAV | Abandon patent right to avoid regrant |