CN202729612U - Control device for movable counterweight of crane and crane - Google Patents
Control device for movable counterweight of crane and crane Download PDFInfo
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- CN202729612U CN202729612U CN 201220338287 CN201220338287U CN202729612U CN 202729612 U CN202729612 U CN 202729612U CN 201220338287 CN201220338287 CN 201220338287 CN 201220338287 U CN201220338287 U CN 201220338287U CN 202729612 U CN202729612 U CN 202729612U
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Abstract
The utility model provides a control device for a movable counterweight of a crane. The control device comprises a first detection device for detecting whether the movable counterweight exists, a second detection device for detecting whether the movable counterweight is at a set position, and a controller, wherein the first detection device and the second detection device are connected with the controller respectively, and the controller can obtain the position and state of the movable counterweight according to signals detected by the first detection device and the second detection device, and then control the slewing motion of the crane, so that the stability and safety of the crane are improved. The utility model further provides the crane which comprises the control device for the movable counterweight of the crane, and the slewing motion of the crane can be controlled by the control device, so that the stability and safety of the crane are improved.
Description
Technical field
The utility model relates to engineering machinery field, in particular to a kind of control setup of crane mobile counterweight and have the hoisting crane of this kind mobile counterweight control setup.
Background technology
The mobile counterweight of hoisting crane has common counterweight function simultaneously, can also increase stability and play principal characteristic by changing the car load center of gravity.If but it is not controlled in the use procedure, also there is certain potential safety hazard, in the process that mobile counterweight glides, also more and more less with the vertical distance on ground, when if during this time hoisting crane turns round action, safety misadventure occurs in easy with peripheral object collision.
Therefore, there is following shortcoming at least in the hoisting crane in the correlation technique: mobile counterweight easily bumps with object on every side in the turning course, and safety is lower.
The utility model content
A purpose of the present utility model is, a kind of control setup of crane mobile counterweight is provided, and can detect the position that whether hangs with mobile counterweight and detect mobile counterweight, and controls the revolution action of hoisting crane by control setup.
In view of this, the utility model provides a kind of control setup of crane mobile counterweight, and comprising for detection of described mobile counterweight has or the first detecting device of nothing, whether be positioned at second detection device and the controller of desired location for detection of described mobile counterweight; Described the first detecting device, second detection device are connected with described controller, and described controller is controlled the revolution action of described hoisting crane according to the signal that the described second detection device of described the first detecting device detects.
In the technique scheme, described control setup is the detection of described mobile counterweight being carried out position, state by detecting device, whether can turn round action by described controller control hoisting crane again, when namely detecting without described mobile counterweight, hoisting crane can turn round action at any time; When having detected described mobile counterweight, only when described counterweight was in desired location, hoisting crane just can turn round action, thereby had improved the safety performance of hoisting crane.
In technique scheme, preferably, described control setup also comprises the 3rd detecting device, and described the 3rd detecting device is connected with described controller; The described desired location of described mobile counterweight comprises the first desired location and the second desired location; Whether described second detection device is positioned at described the first desired location for detection of described mobile counterweight; Whether described the 3rd detecting device is positioned at described the second desired location for detection of described mobile counterweight; Described controller is controlled the revolution action of described hoisting crane according to the signal that described the first detecting device and described second detection device or described the 3rd detecting device detect.
In this technical scheme, two desired locations that have according to mobile counterweight, adopt respectively second detection device and the 3rd detecting device to detect, then the signal that detects in conjunction with the first detecting device, the revolution action of control hoisting crane, be preferred embodiment a kind of, further realize the accurate control to the crane rotation action.
In this preferred version, adopt second detection device to detect whether mobile counterweight is positioned at the first desired location, the 3rd detecting device detects mobile counterweight and whether is positioned at the second desired location, certainly, also can be conversely, namely adopt second detection device to detect whether mobile counterweight is positioned at the second desired location, the 3rd detecting device detects mobile counterweight and whether is positioned at the first desired location, also be fine.
In technique scheme, preferably, described mobile counterweight is connected with the propelling rod of being connected with the oblique thrust bar respectively; When described mobile counterweight was positioned at described the first desired location, described oblique thrust bar and straight propelling rod were in respectively primary importance, and when described mobile counterweight was positioned at described the second desired location, described oblique thrust bar and straight propelling rod were in respectively the second place; Described controller detects the described primary importance of described oblique thrust bar or straight propelling rod by described second detection device, obtains described mobile counterweight and whether is positioned at described the first desired location; Described controller detects the described second place of described oblique thrust bar or straight propelling rod by described the 3rd detecting device, obtains described mobile counterweight and whether is positioned at described the second desired location.
In this technical scheme, second detection device and the 3rd detecting device are not whether the direct-detection mobile counterweight is positioned at the first desired location or the second desired location, but by detect the oblique thrust bar be connected with mobile counterweight and/or directly the position of propelling rod realize, so that the position of detecting device setting kind more flexible, that select is more various, be beneficial to the realization of detection and accurately detection.
In technique scheme, preferably, described second detection device detects the described second place that the described primary importance of described oblique thrust bar, described the 3rd detecting device detect described oblique thrust bar; Perhaps, described second detection device detects the described second place that the described primary importance of described straight propelling rod, described the 3rd detecting device detect described straight propelling rod; Perhaps, described second detection device detects the described second place or the primary importance that the described primary importance of described oblique thrust bar or the second place, described the 3rd detecting device detect described straight propelling rod.
Described second detection device and the 3rd detecting device, can detect two positions of the oblique thrust bar of mobile counterweight, also can detect two positions of straight propelling rod, perhaps detect respectively a position of oblique thrust bar and a position of straight propelling rod, realize the detection to mobile counterweight position and state, simple in structure, be easy to realize.
In technique scheme, preferably, described the first detecting device is installed on the counterweight support of described mobile counterweight, and described second detection device and described the 3rd detecting device are installed on the stay bearing plate of hoisting crane housing.
This kind mounting means utilizes the intrinsic construction and device of hoisting crane to install, realize to detect and the control purpose in, rational in infrastructure, cost is low.
In technique scheme, preferably, described the first detecting device, second detection device and the 3rd detecting device are approach switch.
Adopt approach switch, stable performance, long service life have improved stability and the reliability of detecting device, and have reduced installation cost.
Further, described approach switch is installed on the approach switch adapter plate, and described approach switch adapter plate is installed on the described counterweight support and/or on the described stay bearing plate.
The first detecting device, second detection device and the 3rd detecting device are fixedly connected on the hoisting crane by the approach switch adapter plate, make things convenient for the mounting or dismounting of detecting device.
Preferably, be provided with waist shaped hole on the described approach switch adapter plate, described approach switch adapter plate is installed by described waist shaped hole.
Be provided with waist shaped hole on the switch installation board, can adjust the position of switch installation board, thereby can adjust the installation site of the first detecting device, second detection device and the 3rd detecting device, be convenient to the install and adjust of detecting device, and improved the detection effect.
The utility model also provides a kind of hoisting crane, includes the control setup of the described crane mobile counterweight of above-mentioned arbitrary technical scheme.
In sum, the control setup of the described crane mobile counterweight that the utility model provides and with the hoisting crane of this control setup, can detect the position that has or not and detect mobile counterweight of mobile counterweight, so the revolution action of control hoisting crane, the safety that has improved hoisting crane.
Description of drawings
Fig. 1 is the structural representation according to the utility model one embodiment;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is a kind of view that the mobile counterweight of hoisting crane shown in Figure 1 is positioned at desired location;
Fig. 4 is another view that the mobile counterweight of hoisting crane shown in Figure 1 is positioned at desired location;
Fig. 5 is the structural representation of approach switch adapter plate.
Wherein, the corresponding relation between Reference numeral and the component names is among Fig. 1 to Fig. 5:
1 first detecting device, 2 second detection devices 3 the 3rd detecting device
4 mobile counterweights, 5 counterweight supports, 6 stay bearing plates, 7 oblique thrust bars
8 straight propelling rod 9 approach switch adapter plates 91 waist shaped holes 10 counterweight translation oil cylinders
The specific embodiment
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments the utility model is further described in detail.
A lot of details have been set forth in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection domain of the present utility model is not subjected to the restriction of following public specific embodiment.
Below in conjunction with drawings and Examples the utility model is described further.Need to prove that in the situation of not conflicting, the application's embodiment and the feature among the embodiment can make up mutually.
Such as Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, control setup one embodiment of crane mobile counterweight described in the utility model comprises for detection of described mobile counterweight 4 having or the first detecting device 1 of nothing, whether be positioned at second detection device 2 and the controller (not shown) of desired location for detection of described mobile counterweight 4.Described the first detecting device 1, second detection device 2 are connected with described controller respectively, and described controller is controlled the revolution action of described hoisting crane according to the signal that described the first detecting device 1 and described second detection device 2 detect.Be exactly specifically: when described the first detecting device 1 detected without described mobile counterweight 4, described controller is controlled described hoisting crane can turn round action at any time; When described the first detecting device 1 has detected described mobile counterweight 4, only when described second detection device detects described mobile counterweight 4 and is positioned at desired location, described controller is controlled described hoisting crane just can turn round action, otherwise described hoisting crane can not turn round action.
The control setup of the described crane mobile counterweight that this embodiment provides, it is the detection of described mobile counterweight being carried out position, state by detecting device, whether can turn round action by described controller control hoisting crane again, when namely detecting without described mobile counterweight, hoisting crane can turn round action at any time; When having detected described mobile counterweight, only when described counterweight was in desired location, hoisting crane just can turn round action, thereby had improved the safety performance of hoisting crane.
In the present embodiment, preferably, described control setup also comprises the 3rd detecting device 3, and described the 3rd detecting device 3 is connected with described controller; As shown in Figure 3 and Figure 4, the described desired location of described mobile counterweight 4 comprises the first desired location and the second desired location; Whether described second detection device 2 is positioned at described the first desired location for detection of described mobile counterweight 4; Whether described the 3rd detecting device 3 is positioned at described the second desired location for detection of described mobile counterweight 4; Described controller is controlled the revolution action of described hoisting crane according to the signal that described the first detecting device 1 and described second detection device 2 or described the 3rd detecting device 3 detect.The control process of this embodiment is: when described the first detecting device 1 detected without described mobile counterweight 4, described controller is controlled described hoisting crane can turn round action at any time; When described the first detecting device 1 has detected described mobile counterweight 4, only when described second detection device detects described mobile counterweight 4 and is positioned at described the first desired location, when perhaps described the 3rd detecting device detects described mobile counterweight 4 and is positioned at described the second desired location, described controller is controlled described hoisting crane just can turn round action, otherwise described hoisting crane can not turn round action.
Among this embodiment, according to two desired locations that mobile counterweight has, adopt respectively second detection device and the 3rd detecting device to detect the signal that then detects in conjunction with the first detecting device, the revolution action of control hoisting crane further realizes the accurate control to the crane rotation action.
In the present embodiment, adopt second detection device to detect whether mobile counterweight is positioned at the first desired location, the 3rd detecting device detects mobile counterweight and whether is positioned at the second desired location, certainly, also can be conversely, namely adopt second detection device to detect whether mobile counterweight is positioned at the second desired location, the 3rd detecting device detects mobile counterweight and whether is positioned at the first desired location, also be fine.
In the present embodiment, preferably, described mobile counterweight 4 is connected with the propelling rod of being connected 8 with oblique thrust bar 7 respectively; When described mobile counterweight 4 was positioned at described the first desired location, described oblique thrust bar 7 and straight propelling rod 8 were in respectively primary importance, and when described mobile counterweight 4 was positioned at described the second desired location, described oblique thrust bar 7 and straight propelling rod 8 were in respectively the second place; Described controller detects the described primary importance of described oblique thrust bar 7 or straight propelling rod 8 by described second detection device, obtains described mobile counterweight 4 and whether is positioned at described the first desired location; Described controller detects the described second place of described oblique thrust bar 7 or straight propelling rod 8 by described the 3rd detecting device, obtains described mobile counterweight 4 and whether is positioned at described the second desired location.
Among this embodiment, second detection device and the 3rd detecting device are not whether the direct-detection mobile counterweight is positioned at the first desired location or the second desired location, but by detect the oblique thrust bar be connected with mobile counterweight and/or directly the position of propelling rod realize, so that the position of detecting device setting kind more flexible, that select is more various, be beneficial to the realization of detection and accurately detection.
Preferably, as depicted in figs. 1 and 2, described second detection device 2 is for detection of the primary importance of described mobile counterweight 4 oblique thrust bars 7, and described the 3rd detecting device 3 is for detection of the second place of described mobile counterweight 4 oblique thrust bars 7.
In above-described embodiment, detect the primary importance of mobile counterweight 4 oblique thrust bars 7 and the second place that the 3rd detecting device 3 detects mobile counterweight 4 oblique thrust bars 7 with second detection device 2, describe.In fact, also can detect the primary importance of mobile counterweight 4 straight propelling rods 8, the second place that the 3rd detecting device 3 detects mobile counterweight 4 straight propelling rods 8 by second detection device 2; Perhaps, detect the second place or the primary importance that the primary importance of mobile counterweights 4 oblique thrust bars 7 or the second place, the 3rd detecting device 3 detect mobile counterweights 4 straight propelling rods 8 by second detection device 2, can realize same purpose.
Preferably, as depicted in figs. 1 and 2, described the first detecting device 1 is installed on the counterweight support 5 of described mobile counterweight 4, and described second detection device 2 and described the 3rd detecting device 3 are installed on the stay bearing plate 6 of hoisting crane housing.
This kind mounting means utilizes the intrinsic construction and device of hoisting crane to install, realize to detect and the control purpose in, rational in infrastructure, cost is low.
Preferably, described the first detecting device 1, second detection device 2 and the 3rd detecting device 3 are approach switch.
Adopt approach switch, stable performance, long service life have improved stability and the reliability of detecting device, and have reduced installation cost.
Whether art technology people should be understood that detecting device described in the utility model, can also be other detecting device, hang on the counterweight support 5 as long as can detect mobile counterweight 4, and can detect mobile counterweight 4 and whether be positioned at desired location and get final product.
Preferably, described approach switch is installed on the approach switch adapter plate 9, and described approach switch adapter plate 9 is installed on the described counterweight support 5 and/or on the described stay bearing plate 6.Described the first detecting device 1, second detection device 2 and the 3rd detecting device 3 are fixedly connected on the hoisting crane by approach switch adapter plate 9, make things convenient for the mounting or dismounting of detecting device.
Preferably, as shown in Figure 5, be provided with waist shaped hole 91 on the described approach switch adapter plate 9, described approach switch adapter plate 9 is installed by described waist shaped hole 91.Be provided with waist shaped hole 91 on the switch installation board 9, then can adjust easily the installation site of switch installation board 9, thereby can adjust the installation site of the first detecting device 1, second detection device 2 and the 3rd detecting device 3, be convenient to the install and adjust of detecting device, and improve the detection effect.
Fig. 1 to Fig. 4 also shows a kind of hoisting crane embodiment that the utility model provides, and includes the control setup of the described crane mobile counterweight of above-mentioned arbitrary embodiment.
The structure of above-described embodiment and the control process of crane rotation are specifically, as shown in Figures 1 to 4, hoisting crane hangs with mobile counterweight 4, the first approach switch as the first detecting device 1 is installed on the counterweight support 5, can having or without detecting, and detection signal sent to described controller mobile counterweight 4; Be installed on the stay bearing plate 6 of hoisting crane housing as the second approach switch of described second detection device 2 with as the 3rd approach switch of described the 3rd detecting device 3, the second approach switch can detect the primary importance of oblique thrust bar 7, the second place that the 3rd approach switch can detect oblique thrust bar 7, and respectively just detection signal send to controller.When mobile counterweight 4 is in mode of operation shown in Figure 3, be that counterweight translation oil cylinder 10 is when being in full reduced state, mobile counterweight 4 is in the first desired location (a kind of extreme higher position), then described oblique thrust bar 7 is in primary importance, but described the second approach switch picked up signal, and signal sent to described controller, after described controller had obtained the signal of the first approach switch and the second approach switch, the control hoisting crane can turn round action; When mobile counterweight 4 is in the described mode of operation of Fig. 4, be that counterweight translation oil cylinder 10 is in when entirely stretching state, mobile counterweight 4 is in the second desired location (another kind of extreme higher position), described oblique thrust bar 7 is in the second place, described the 3rd approach switch picked up signal, and signal sent to described controller, after described controller had obtained the signal of the first approach switch and the 3rd approach switch, hoisting crane also can turn round action; If during the first approach switch no signal, when namely hoisting crane was not hung mobile counterweight 4, then no matter whether described the second approach switch and/or the 3rd approach switch detected signal, and hoisting crane can turn round action.Thereby can guarantee when mobile counterweight 4 is in the extreme higher position that (counterweight translation oil cylinder 10 is in two positions full reduced or when entirely stretching state, that is oblique thrust bar 7 is in primary importance or the second place), hoisting crane just can turn round action, the danger that counterweight and peripheral object collision bring when having avoided crane rotation.
In like manner, can adopt the second approach switch to detect the primary importance of straight push rod 8, the second place that employing the 3rd approach switch detects straight push rod 8; Perhaps, adopt the second approach switch to detect the second place or primary importance that the primary importance of slanted pushing rod 7 or the second place, employing the 3rd approach switch detect straight push rod 8, realize the detection to the first setting position or second desired location of mobile counterweight 4, realize the control to the crane rotation action.
Fig. 5 shows a kind of structure of approach switch adapter plate 9, be provided with two waist shaped holes 91 on the described approach switch adapter plate 9, the first detecting device 1, second detection device 2 and the 3rd detecting device 3 can be adjusted installation by this approach switch adapter plate 9, thereby can be by the movement of the fasteners such as bolt in waist shaped hole 91, adjust the installation site of approach switch adapter plate 9, so that approach switch is in the optimum detection position, can make things convenient for the adjustment of approach switch installation site, and improve the detection effect.
In sum, the control setup of the crane mobile counterweight that the utility model provides reaches the hoisting crane with this mobile counterweight control setup, can detect the position with mobile counterweight of having or not of mobile counterweight, so the revolution action of control hoisting crane, the safety that has improved hoisting crane.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. the control setup of crane mobile counterweight is characterized in that,
Comprise for detection of described mobile counterweight (4) and have or first detecting device (1) of nothing, whether be positioned at second detection device (2) and the controller of desired location for detection of described mobile counterweight (4);
Described the first detecting device (1), second detection device (2) are connected with described controller respectively, described controller is controlled the revolution action of described hoisting crane according to the signal that described the first detecting device (1) and described second detection device (2) detect.
2. the control setup of crane mobile counterweight according to claim 1 is characterized in that,
Described control setup also comprises the 3rd detecting device (3), and described the 3rd detecting device (3) is connected with described controller;
The described desired location of described mobile counterweight (4) comprises the first desired location and the second desired location;
Whether described second detection device (2) is positioned at described the first desired location for detection of described mobile counterweight (4); Whether described the 3rd detecting device (3) is positioned at described the second desired location for detection of described mobile counterweight (4);
Described controller is controlled the revolution action of described hoisting crane according to the signal that described the first detecting device (1) and described second detection device (2) or described the 3rd detecting device (3) detect.
3. the control setup of crane mobile counterweight according to claim 2 is characterized in that,
Described mobile counterweight (4) is connected with the propelling rod of being connected (8) with oblique thrust bar (7) respectively;
Described mobile counterweight (4) is when being positioned at described the first desired location, described oblique thrust bar (7) and straight propelling rod (8) are in respectively primary importance, described mobile counterweight (4) is when being positioned at described the second desired location, and described oblique thrust bar (7) and straight propelling rod (8) are in respectively the second place;
Described controller obtains described mobile counterweight (4) and whether is positioned at described the first desired location by the described primary importance of described second detection device (2) detection described oblique thrust bar (7) or straight propelling rod (8); Described controller obtains described mobile counterweight (4) and whether is positioned at described the second desired location by the described second place of described the 3rd detecting device (3) detection described oblique thrust bar (7) or straight propelling rod (8).
4. the control setup of crane mobile counterweight according to claim 3 is characterized in that,
Described second detection device (2) detects the described primary importance of described oblique thrust bar (7), the described second place that described the 3rd detecting device (3) detects described oblique thrust bar (7); Perhaps,
Described second detection device (2) detects the described primary importance of described straight propelling rod (8), the described second place that described the 3rd detecting device (3) detects described straight propelling rod (8); Perhaps,
The described primary importance of described second detection device (2) the described oblique thrust bar of detection (7) or the second place, described the 3rd detecting device (3) detect the described second place or the primary importance of described straight propelling rod (8).
5. the control setup of each described crane mobile counterweight in 4 according to claim 2 is characterized in that,
Described the first detecting device (1) is installed on the counterweight support (5) of described mobile counterweight (4), and described second detection device (2) and described the 3rd detecting device (3) are installed on the stay bearing plate (6) of hoisting crane housing.
6. the control setup of crane mobile counterweight according to claim 5 is characterized in that,
Described the first detecting device (1), second detection device (2) and the 3rd detecting device (3) are approach switch.
7. the control setup of crane mobile counterweight according to claim 6 is characterized in that,
Described approach switch is installed on the approach switch adapter plate (9), and described approach switch adapter plate (9) is installed on the upper and/or described stay bearing plate (6) of described counterweight support (5).
8. the control setup of crane mobile counterweight according to claim 7 is characterized in that,
Be provided with waist shaped hole (91) on the described approach switch adapter plate (9), described approach switch adapter plate (9) is installed by described waist shaped hole (91).
9. a hoisting crane is characterized in that, includes the control setup such as each described crane mobile counterweight in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338287 CN202729612U (en) | 2012-07-12 | 2012-07-12 | Control device for movable counterweight of crane and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338287 CN202729612U (en) | 2012-07-12 | 2012-07-12 | Control device for movable counterweight of crane and crane |
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| CN202729612U true CN202729612U (en) | 2013-02-13 |
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| CN 201220338287 Expired - Lifetime CN202729612U (en) | 2012-07-12 | 2012-07-12 | Control device for movable counterweight of crane and crane |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828714A (en) * | 2014-12-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Balance weight mechanism used in engineering machine |
| CN106044591A (en) * | 2015-03-31 | 2016-10-26 | 马尼托瓦克起重机有限责任公司 | System and method for crane counterweight positioning |
| CN108975185A (en) * | 2018-09-21 | 2018-12-11 | 山东协和学院 | A kind of packaged type balance weight mechanism and its application method for engineering machinery |
| CN110950247A (en) * | 2019-12-30 | 2020-04-03 | 徐州重型机械有限公司 | Crane counterweight combination identification method and system and crane |
| US10744880B2 (en) | 2015-07-22 | 2020-08-18 | Beijing Efficiengine Technology Llc | Negative voltage backflow direct current supply system for rail transport |
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2012
- 2012-07-12 CN CN 201220338287 patent/CN202729612U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828714A (en) * | 2014-12-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Balance weight mechanism used in engineering machine |
| CN104828714B (en) * | 2014-12-19 | 2017-06-06 | 北汽福田汽车股份有限公司 | For the balance weight mechanism of engineering machinery |
| CN106044591A (en) * | 2015-03-31 | 2016-10-26 | 马尼托瓦克起重机有限责任公司 | System and method for crane counterweight positioning |
| CN106044591B (en) * | 2015-03-31 | 2018-12-25 | 马尼托瓦克起重机有限责任公司 | System and method for crane counterweight positioning |
| US10744880B2 (en) | 2015-07-22 | 2020-08-18 | Beijing Efficiengine Technology Llc | Negative voltage backflow direct current supply system for rail transport |
| CN108975185A (en) * | 2018-09-21 | 2018-12-11 | 山东协和学院 | A kind of packaged type balance weight mechanism and its application method for engineering machinery |
| CN108975185B (en) * | 2018-09-21 | 2020-06-05 | 山东协和学院 | Movable counterweight mechanism for engineering machinery and application method thereof |
| CN110950247A (en) * | 2019-12-30 | 2020-04-03 | 徐州重型机械有限公司 | Crane counterweight combination identification method and system and crane |
| CN110950247B (en) * | 2019-12-30 | 2021-08-13 | 徐州重型机械有限公司 | Crane counterweight combination identification method and system and crane |
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Assignee: 31 northwest Heavy Industries Ltd. Assignor: SANY HEAVY INDUSTRY Co.,Ltd. Contract record no.: 2013430000010 Denomination of utility model: Control device for movable counterweight of crane and crane Granted publication date: 20130213 License type: Exclusive License Record date: 20130322 |
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