Bolt type telescopic boom system and telescopic operation equipment

Abstract

The utility model belongs to the technical field of engineering machinery and provides a bolt type telescopic boom system and telescopic operation equipment. The pin type arm support system comprises a telescopic driving mechanism, an arm support mechanism and an electromagnetic induction assembly, the telescopic driving mechanism is provided with a telescopic moving part, the arm support mechanism comprises a basic arm and a plurality of arm sections which are sequentially arranged in a sleeved mode, the electromagnetic induction assembly comprises a first sensing element and a second sensing element, and the first sensing element is arranged on the telescopic moving part. The second sensing elements are arranged on the arm sections, and the first sensing elements are used for uniquely sensing the second sensing elements on the arm sections when the telescopic moving part moves and generating induction current with unique characteristics. The system can recognize the arm section in a non-contact mode, recognition faults caused by long-term contact abrasion or collision of the sensing element can be avoided through the recognition mode, and meanwhile the requirement for installation position precision is low, recognition sensitivity is high, and durability and reliability are high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to engineering machinery technical field, concretely relates to a latch type telescopic arm frame system and telescopic operation equipment. BACKGROUND

[0002] When the single-cylinder latch type telescopic arm is extended, the latch mechanism of the cylinder head is controlled to act first, so that the cylinder pin on the latch mechanism is connected with the target arm section, then the arm pin between the target arm section and the previous arm section is pulled out by another set of driving assembly of the latch mechanism, at this time, the target arm section can be extended by driving the cylinder to act.

[0003] In order to ensure that the latch mechanism accurately finds the target arm section, the existing technology generally sets the code block and the sensing block for mutual cooperation at the head end of the piston rod of the cylinder and the tail of each arm section, the sensing block is installed at the head end of the piston rod by the spring, and the code block and the sensing block are in contact at a specific position by the pushing of the spring, so as to realize the identification of the arm section information and the positioning of the hole pin. However, since this identification method requires the contact between the sensing block and the code block, the code block or the sensing block is prone to wear or impact after the telescopic arm is used for a period of time, resulting in identification failure. SUMMARY

[0004] In view of the above defects or deficiencies, the utility model provides a latch type telescopic arm frame system and telescopic operation equipment, aiming at solving the technical problem that the arm section identification method of the existing single-cylinder latch type telescopic arm is prone to failure.

[0005] To achieve the above purpose, the utility model provides a latch type telescopic arm frame system, the latch type telescopic arm frame system includes telescopic driving mechanism, arm frame mechanism and electromagnetic induction assembly, the telescopic driving mechanism is equipped with telescopic movable part, the arm frame mechanism includes base arm and a plurality of arm sections which are sequentially sleeved, the electromagnetic induction assembly includes first sensing element and second sensing element, the first sensing element is arranged on the telescopic movable part, the second sensing element is arranged on the arm section, the first sensing element is used to uniquely induct with the second sensing element on each arm section when the telescopic movable part moves, and the inductive current with unique characteristics is generated.

[0006] In the embodiment of the utility model, the characteristics of the inductive current include the current direction, one of the first sensing element and the second sensing element is a magnetic generating piece, and the other is a magnetic induction piece, the magnetic generating piece has N pole and S pole, the unique induction mode of the first sensing element and the second sensing element includes that the N pole of the magnetic generating piece and the magnetic induction piece generate electromagnetic induction, and / or the S pole of the magnetic generating piece and the magnetic induction piece generate electromagnetic induction.

[0007] In the embodiment of the utility model, the characteristic of the induced current includes current generation position, a plurality of first sensing elements are equipped on the telescopic movable part, the number of second sensing elements on each arm section is at least one, the unique sensing mode of the first sensing element and the second sensing element includes that the second sensing element of the first position of one arm section and the corresponding first sensing element produce electromagnetic induction, and / or the second sensing element of the second position of one arm section and the corresponding first sensing element produce electromagnetic induction, wherein the first position and the second position are staggered in the circumferential direction and / or axial direction of the arm section.

[0008] In the embodiment of the utility model, the latch type telescopic arm support system further includes a current detection element for detecting the characteristic of the induced current.

[0009] In the embodiment of the utility model, the latch type telescopic arm support system further includes a controller in communication connection with the current detection element.

[0010] In the embodiment of the utility model, one end of the telescopic movable part is a plug-in pin end, the first sensing element is arranged on the plug-in pin end, and the second sensing element is arranged on the pin plug-in and alignment area of the arm section.

[0011] In the embodiment of the utility model, the plug-in pin end is provided with a first movable assembly for plug-in driving of the arm pin, the first movable assembly includes a first driving member and a pin pulling plate, the pin pulling plate is provided with a pin pulling groove for the head of the arm pin to extend into, and the first driving member is used for driving the pin pulling plate to displace radially.

[0012] In the embodiment of the utility model, the plug-in pin end is further provided with a second movable assembly for plug-in driving of the cylinder pin, and the second movable assembly includes a second driving member for driving the cylinder pin to displace radially.

[0013] In the embodiment of the utility model, the first driving member and the second driving member are motors, and an interlocking circuit is arranged between the first driving member and the second driving member.

[0014] To achieve the above-mentioned purpose, the utility model further provides a telescopic operation equipment, wherein the telescopic operation equipment includes the latch type telescopic arm support system according to the above.

[0015] Through the above technical scheme, the latch type telescopic arm support system provided by the utility model embodiment has the following beneficial effects:

[0016] When the telescopic driving mechanism passes through each arm section in turn, the electromagnetic induction assembly between the telescopic driving mechanism and each arm section can generate induction current with different characteristics, so the arm section can be identified based on the characteristics of the induction current. When the telescopic driving mechanism passes through a certain arm section, the characteristics of the generated induction current are detected, and the characteristic information of the induction current is compared with the preset identification information in the memory, so that the number information of the arm section currently passed through can be determined according to the comparison result. Compared with the contact type arm section induction element, this identification method is non-contact, and the non-contact arm section identification method can avoid the problem of arm section identification failure caused by long-term contact wear or impact of the arm section induction element. Compared with the non-contact identification method by means of the sensor, the arm section identification method based on electromagnetic induction can get rid of the dependence on the sensor (such as a distance measuring sensor, a light sensor, etc.), and the electromagnetic induction assembly can at least include a magnetic generating element and a magnetic induction element. The structure of the electromagnetic induction assembly can be very simple, and the simpler the structure is, the lower the probability of failure is, and the higher the durability and reliability are. At the same time, the electromagnetic induction assembly can generate electromagnetic induction within a relatively wide distance, which reduces the installation precision requirement of the electromagnetic induction assembly and ensures the sensitivity of identification.

[0017] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0019] Figure 1 is a structural schematic view of the first perspective of the bolt type telescopic arm support system according to the embodiment of the present application;

[0020] Figure 2 is a structural schematic view of the second perspective of the bolt type telescopic arm support system according to the embodiment of the present application;

[0021] Figure 3 is a structural principle schematic view of the bolt type telescopic arm support system of the three-section arm according to the embodiment of the present application;

[0022] Figure 4 is a circuit principle diagram of the interlocking circuit according to the embodiment of the present application.

[0023] EXPLANATION OF REFERENCE NUMERALS

[0024] 1, arm mechanism; 11, base arm; 12, arm section; 2, telescopic driving mechanism; 21, plug-in pin end; 22, first movable assembly; 221, first driving member; 222, intermediate transmission member; 223, plug-in pin plate; 23, second movable assembly; 231, second driving member; 3, electromagnetic induction assembly; 31, first induction element; 32, second induction element; 4, current detection element; 51, arm pin. DETAILED DESCRIPTION

[0025] The specific embodiments of the utility model are described in detail below in combination with the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0026] The plug-in telescopic arm mechanism system of the utility model is described below with reference to the drawings.

[0027] As shown in Figure 1 , Figure 2 and Figure 3 , the utility model provides a plug-in telescopic arm mechanism system, which comprises a telescopic driving mechanism 2, an arm mechanism 1 and an electromagnetic induction assembly 3.

[0028] The arm mechanism 1 comprises a base arm 11 at the outermost layer and a plurality of arm sections 12 which are sequentially sleeved in the base arm 11.

[0029] The telescopic driving mechanism 2 comprises a fixed part for being fixed on the base arm 11 and a telescopic movable member which can be telescoped relative to the fixed part. When the fixed part is a cylinder barrel of an oil cylinder, the telescopic movable member is a piston rod of the oil cylinder. The end of the telescopic movable member away from the base arm 11 is a plug-in pin end 21, which is inserted into the hollow cavity of the arm section 12 and is provided with a first movable assembly 22 for plugging and unplugging the arm pin 51 and a second movable assembly 23 for plugging and unplugging the cylinder pin.

[0030] When the cylinder pin of the plug-in pin end 21 and the arm section 12 are in the unlocked state, each arm section 12 and the arm section 12, and the arm section 12 and the base arm 11 are locked and fixed through the arm pin 51, and the plug-in pin end 21 of the telescopic driving mechanism 2 can be telescopically moved relative to the base arm 11 and each arm section 12. By controlling the plug-in pin end 21 to move to the pin plugging and unplugging alignment area of the target arm section 12, and then inserting the cylinder pin (not shown in the figure) and unplugging the arm pin 51 in turn, and then controlling the plug-in pin end 21 to move, the target arm section 12 can be driven to extend or retract.

[0031] Taking a three-section arm plug-in telescopic arm mechanism system as an example, as shown in Figure 3As shown, the three-section arm is sequentially from outside to inside a first arm (base arm 11), a second arm and a third arm, when the three-section arm is sequentially extended from the fully retracted state, first control the extension and retraction drive mechanism 2 pin end 21 moves to the pin insertion and extraction position of the third arm, then the drive cylinder pin is connected with the third arm, and the arm pin 51 between the third arm and the second arm is pulled out, by controlling the extension and retraction drive mechanism 2 to extend, the independent extension of the third arm can be realized. After the third arm is extended to the position, the cylinder pin is pulled out, the arm pin 51 is inserted, then the insertion and extraction pin end 21 is retracted, and the insertion and extraction pin operation with the second arm is repeated, so that the second arm carrying the third arm can continue to extend.

[0032] As Figure 1 and Figure 3 As shown in the embodiment of the utility model, the electromagnetic induction assembly 3 includes a first induction element 31 and a second induction element 32, the first induction element 31 is arranged on the extension and retraction movable element, the second induction element 32 is arranged on the arm section 12, the first induction element 31 is used to be inducted uniquely with the second induction element 32 on each arm section 12 when the extension and retraction movable element moves, and the inductive current with unique characteristics is generated. That is, the characteristics of the inductive current generated by the electromagnetic induction of the first induction element 31 and the second induction element 32 on each arm section 12 are different.

[0033] Because the extension and retraction movable element of the extension and retraction drive mechanism 2 sequentially passes each arm section 12, the characteristics of the inductive current generated by the first induction element 31 and the second induction element 32 on each arm section 12 are different, so the arm section 12 can be identified based on the characteristics of the inductive current. When the extension and retraction drive mechanism 2 passes a certain arm section 12, the characteristics of the inductive current generated are detected, and the characteristic information of the inductive current is compared with the preset identification information in the memory, so that the number information of the arm section 12 currently passing can be determined according to the comparison result.

[0034] Compared with the contact type arm section induction element, the identification mode in the embodiment is non-contact type, and the non-contact type arm section identification mode can avoid the problem of arm section identification failure caused by long-term contact wear or impact of the arm section induction element. Compared with some existing non-contact type identification modes by means of sensors, the arm section identification mode based on electromagnetic induction can get rid of the dependence on sensors (such as distance measuring sensors, light sensors, etc.), and the electromagnetic induction assembly can at least include a magnetic generating element and a magnetic induction element. The structure of the electromagnetic induction assembly can be very simple, and the simpler the structure, the lower the probability of failure, and the higher the durability and reliability. At the same time, the electromagnetic induction assembly can generate electromagnetic induction within a relatively wide distance, which reduces the installation precision requirement of the electromagnetic induction assembly and ensures the sensitivity of identification.

[0035] As Figure 1As shown, in an embodiment of this utility model, one of the first sensing element 31 and the second sensing element 32 is a magnetic generator, and the other is a magnetic induction element. The magnetic generator can be a permanent magnet or an electromagnet.

[0036] In embodiments of this utility model, the characteristics of the induced current can be at least one of the following: current magnitude, current direction, current generation location, and current generation quantity.

[0037] like Figure 1 As shown, a magnetic generator generally has an N pole and a S pole. When the characteristic of the induced current is the current direction, the unique sensing mode of the first sensing element 31 and the second sensing element 32 can be that the N pole of the magnetic generator induces electromagnetic induction with the magnetic induction element, and / or the S pole of the magnetic generator induces electromagnetic induction with the magnetic induction element. By inducing the magnetic induction element with the N pole and the S pole respectively, the magnetic induction element can generate induced currents in different directions.

[0038] As Figure 3 The illustrated example is a three-section telescopic boom system with a pin-type connector. The three sections, from the outside in, are the first, second, and third sections. The magnetic generator and magnetic induction device can be a magnet and a coil, respectively. The coil can be mounted on the piston rod or the pin end 21 of the telescopic drive mechanism 2, and the magnet can be mounted on the boom section 12. By aligning the S pole of the magnet on the second section radially inward and the N pole of the magnet on the third section radially inward, when the coil of the telescopic drive mechanism 2 passes the magnet on the second section, the induced current is directed in the positive direction; when the coil passes the magnet on the third section, the induced current is directed in the reverse direction. In other words, by adjusting the orientation of the magnetic poles of the magnets on each boom section 12, different induced current directions can be generated when the telescopic drive mechanism 2 passes each boom section 12.

[0039] In embodiments of this utility model, the magnet may also be mounted on the telescopic drive mechanism 2, and the coil may be mounted on the arm section 12.

[0040] Of course, the characteristic of the induced current can also be the location where the current is generated. For example, multiple first sensing elements 31 can be provided on the telescopic movable component, and at least one second sensing element 32 can be provided on each arm segment 12. The positions of the second sensing elements 32 are different for different arm segments 12. The unique sensing method between the first sensing element 31 and the second sensing element 32 can be that the second sensing element 32 at a first position of one arm segment 12 induces electromagnetic induction with the corresponding first sensing element 31, and / or the second sensing element 32 at a second position of one arm segment 12 induces electromagnetic induction with the corresponding first sensing element 31.

[0041] Furthermore, the characteristics of induced current can also be a combination of current magnitude, current direction, current location, and current quantity.

[0042] Taking the eight-section arm plug-in telescopic jib system as an example. The eight-section arms are one arm to eight arms from outside to inside, wherein the magnet installation conditions of the second arm to the eighth arm and the coil installation conditions on the telescopic driving mechanism 2 can be as follows:

[0043] The second arm: the magnets are installed on the left and right sides, the left side magnet S pole faces inward, and the right side magnet S pole faces inward;

[0044] The third arm: the magnets are installed on the left and right sides, the left side magnet S pole faces inward, and the right side magnet N pole faces inward;

[0045] The fourth arm: the magnets are installed on the left and right sides, the left side magnet N pole faces inward, and the right side magnet N pole faces inward;

[0046] The fifth arm: the magnets are installed on the left and right sides, the left side magnet N pole faces inward, and the right side magnet S pole faces inward;

[0047] The sixth arm: the magnet is installed on the left side and the S pole faces inward, and the right side is not installed with a magnet;

[0048] The seventh arm: the magnet is installed on the left side and the N pole faces inward, and the right side is not installed;

[0049] The eighth arm: the magnet is installed on the right side and the S pole faces inward, and the left side is not installed with a magnet;

[0050] The telescopic driving mechanism 2: coils are installed on the left and right sides.

[0051] Through the above setting, the characteristics of the induced current of the second arm to the eighth arm are respectively left positive right positive, left positive right negative, left negative right negative, left negative right positive, left positive right zero, left negative right zero, and left zero right positive. The characteristics are corresponded with the number of arm sections 12 in advance, and in actual application, the position and current direction generated by the induced current are detected, so that the number of arm sections 12 can be accurately identified.

[0052] In the embodiment of the utility model, the size of the induced current can be changed by changing the number of turns of the coil winding or changing the magnetic field strength of the magnet.

[0053] As shown in Figure 1 In the embodiment of the utility model, the plug-in telescopic jib system further comprises a current detection element 4, and the current detection element 4 is used for detecting the characteristics of the induced current. The current detection element 4 can be a current induction switch, an ammeter and the like.

[0054] In the embodiment of the utility model, the plug-in telescopic jib system further comprises a controller, and the controller is in communication connection with the current detection element 4.

[0055] In the embodiment of the utility model, when the arm section 12 is identified, the controller is specifically configured as:

[0056] Confirm that the magnetic induction piece generates an induced current;

[0057] Obtain characteristic information of the induced current;

[0058] Compare the characteristic information of the induced current with preset identification information corresponding to the characteristics;

[0059] According to the comparison result, determine the node number information of the arm section 12 currently passed by the telescopic driving mechanism 2.

[0060] When the telescopic driving mechanism 2 passes through a certain section arm section 12 and generates an induced current, the first induction element 31 cooperates with the second induction element 32 on each arm section 12 to generate an induced current with different characteristics, respectively. By detecting the characteristics of the generated induced current, and comparing the characteristic information of the induced current with the preset identification information in the memory, the node number information of the arm section 12 currently passed can be determined.

[0061] In the embodiment of the utility model, the first induction element 31 is preferably arranged on the plug pin end 21, and the second induction element 32 is preferably arranged on the pin plug-in and plug-out alignment area of the arm section 12, thereby realizing the quick and accurate positioning function between the cylinder pin and the cylinder pin hole.

[0062] Specifically, in the embodiment of the utility model, after confirming the node number information of the arm section 12, the controller is configured to:

[0063] Confirm that the node number of the currently recognized arm section 12 is the same as the node number of the arm section 12 to be operated, and confirm that the induced current does not reach the first preset condition;

[0064] Generate a deceleration instruction;

[0065] Respond to the deceleration instruction;

[0066] Control the telescopic driving mechanism 2 to decelerate according to the deceleration instruction.

[0067] In the embodiment of the utility model, after confirming the node number information of the arm section 12, the controller is configured to:

[0068] Confirm that the node number of the currently recognized arm section 12 is the same as the node number of the arm section 12 to be operated, and confirm that the induced current satisfies the first preset condition;

[0069] Generate a stop-to-position instruction;

[0070] Respond to the stop-to-position instruction;

[0071] Control the telescopic driving mechanism 2 to stop according to the stop-to-position instruction.

[0072] The pin insertion / removal alignment area refers to the area of ​​the arm section 12 used for inserting / removing the arm pin 51 and the cylinder pin. The first preset condition can be the magnitude and fluctuation range of the induced current. When the telescopic drive mechanism 2 moves at high speed and the insertion / removal pin end 21 just enters the pin insertion / removal alignment area, the coil will enter the magnetic field range of the magnet of the corresponding arm section 12 and generate an induced current.

[0073] Since the insertion pin 21 has just entered the pin insertion and removal alignment area, the coil and magnet are not yet fully aligned, and the coil has not yet fully entered the magnetic field of the magnet. This results in a very small and highly fluctuating induced current generated by the coil. After the coil and magnet are aligned, the coil uniformly cuts the magnetic field, and the induced current generated by the coil will fluctuate around a certain stable value. That is, this method can determine whether the coil and magnet are fully aligned by setting a first preset condition. By optimizing the positions of the magnet and coil, and combining the alignment determination of the coil and magnet, it can determine whether the cylinder pin and the cylinder pin hole on the arm section 12 are aligned.

[0074] When the arm segment 12 that the insertion / removal pin end 21 is currently passing through is determined to be the target operating arm segment 12, the induced current generated by the coil also means that the insertion / removal pin end 21 has moved to the vicinity of the pin insertion / removal alignment area of ​​the target arm segment 12. At this time, the telescopic drive mechanism 2 can be controlled to decelerate in advance to achieve the function of early deceleration of the telescopic drive mechanism 2, so as to avoid the hydraulic oil circuit or oil cylinder being subjected to a large impact due to the sudden stop of the telescopic drive mechanism 2 from high speed. At the same time, early deceleration can also increase the alignment accuracy of the cylinder pin and the cylinder pin hole on the arm segment 12 when the telescopic drive mechanism 2 stops, and avoid the alignment error between the cylinder pin and the cylinder pin hole due to the stopping distance.

[0075] In an embodiment of this utility model, the insertion / removal pin end 21 is provided with a first movable component 22 for driving the insertion and removal of the arm pin 51. The first movable component 22 includes a first driving member 221, an intermediate transmission member 222, and a pin-pulling plate 223. The pin-pulling plate 223 is provided with a pin-pulling groove for the head of the arm pin 51 to extend into. The first driving member 221 and the intermediate transmission member 222 drive the pin-pulling plate 223 to radially displace, thereby realizing the insertion and removal of the arm pin 51. Of course, the movement of the pin-pulling plate 223 can also be achieved by means of a hydraulic drive element.

[0076] like Figure 3 As shown, in an embodiment of this utility model, a second movable component 23 for driving the cylinder pin movement is provided on the insertion pin end 21. The second movable component 23 may include a second driving member 231, which can drive the cylinder pin to extend and retract radially.

[0077] In the embodiment of the utility model, first driving part 221 and second driving part 231 can be linear motor, linear motor can be positioned through grating, to accurately obtain the movement distance of linear motor. Of course, first driving part 221 and second driving part 231 can also be rotary motor and realize radial linear drive through the way of screw rod transmission.

[0078] Because the pin is inserted into the pin slot of the pin plate 223, there is a radial spacing with the inner wall of the plug-in slot, so when the first movable assembly 22 pulls out the arm pin 51, the controller can first control the radial displacement of the pin plate 223 by a certain distance, so that the bottom wall of the pin slot contacts the arm pin 51, and then controls the pin plate 223 to displace the preset distance, so that the arm pin 51 is pulled out. The insertion of the arm pin 51 and the pulling out of the arm pin 51 are similar, that is, first control the radial displacement of the pin plate 223 by a certain distance, so that the top wall of the pin slot contacts the arm pin 51, and then continue to control the pin plate 223 to move.

[0079] In the embodiment of the utility model, interlocking circuit is arranged between first driving part 221 and second driving part 231, and the interlocking circuit can disconnect one of first driving part 221 and second driving part 231 when the other one operates.

[0080] The circuit principle diagram of the interlocking circuit can be as shown in Figure 4 After the disconnecting switch QS is closed, SB2 switch is pressed, KM1 coil is electrified, the main contact KM1 connected with first driving part 221 is closed, first driving part 221 operates, and the originally closed KM1 in the right control circuit is disconnected, and the originally opened KM1 is closed. At this time, even if SB3 switch is pressed, KM2 cannot be electrified. Only when SB1 stop switch is pressed, KM1 coil is de-energized, and the contact is reset. At this time, SB3 is pressed, and KM2 coil is electrified. When KM2 coil is electrified, the main contact KM2 connected with second driving part 231 is closed, the originally closed KM2 in the control circuit is disconnected, and the originally opened KM2 is closed. Through the circuit, the interlocking of the two motors can be realized, and the simultaneous movement of the cylinder pin and the arm pin 51 to cause the arm support to lose control can be avoided.

[0081] To achieve the above object, the utility model also provides a telescopic operation equipment, wherein the telescopic operation equipment comprises the pin type telescopic arm support system according to the above. Since the telescopic operation equipment adopts all the technical solutions in the above embodiment, it at least has the beneficial effects brought by the above embodiment, which will not be repeated here.

[0082] In the description of the utility model, it is necessary to understand that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0083] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0084] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0085] Although the embodiments of the utility model have been described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model, and the skilled in the art can change, modify, replace and modify the above embodiments within the scope of the utility model.

Claims

1. A pin-type telescopic boom system, characterized in that, The pin-type telescopic boom system includes: Telescopic drive mechanism (2) is provided with telescopic movable parts; The boom mechanism (1) includes a base boom (11) and several boom sections (12) that are sequentially sleeved together; The electromagnetic induction assembly (3) includes a first sensing element (31) and a second sensing element (32). The first sensing element (31) is disposed on the telescopic movable member, and the second sensing element (32) is disposed on the arm section (12). The first sensing element (31) is used to uniquely sense the second sensing element (32) on each arm section (12) when the telescopic movable member moves, and generate an induced current with unique characteristics.

2. The pin-type telescopic boom system according to claim 1, characterized in that, The characteristics of the induced current include the direction of the current. One of the first sensing element (31) and the second sensing element (32) is a magnetic generator and the other is a magnetic induction element. The magnetic generator has an N pole and a S pole. The unique sensing modes of the first sensing element (31) and the second sensing element (32) include electromagnetic induction between the N pole of the magnetic generator and the magnetic induction element, and / or electromagnetic induction between the S pole of the magnetic generator and the magnetic induction element.

3. The pin-type telescopic boom system according to claim 1, characterized in that, The characteristics of the induced current include the current generation location, the telescopic movable member is provided with a plurality of first sensing elements (31), the number of second sensing elements (32) on each arm section (12) is at least one, and the unique sensing mode between the first sensing element (31) and the second sensing element (32) includes the second sensing element (32) at a first position of one arm section (12) undergoing electromagnetic induction with the corresponding first sensing element (31), and / or the second sensing element (32) at a second position of one arm section (12) undergoing electromagnetic induction with the corresponding first sensing element (31); The first position and the second position are offset in the circumferential and / or axial direction of the arm segment (12).

4. The pin-type telescopic boom system according to claim 1, characterized in that, The pin-type telescopic boom system also includes a current detection element (4) for detecting the characteristics of the induced current.

5. The pin-type telescopic boom system according to claim 4, characterized in that, The pin-type telescopic boom system also includes a controller, which is communicatively connected to the current detection element (4).

6. The pin-type telescopic boom system according to claim 1, characterized in that, One end of the telescopic movable part is a plug-in pin end (21), the first sensing element (31) is disposed on the plug-in pin end (21), and the second sensing element (32) is disposed on the pin insertion and removal alignment area of ​​the arm section (12).

7. The pin-type telescopic boom system according to any one of claims 1 to 6, characterized in that, One end of the telescopic movable component is a plug-in pin end (21). The plug-in pin end (21) is provided with a first movable component (22) for plugging and pulling the arm pin (51). The first movable component (22) includes a first driving member (221) and a pin-pulling plate (223). The pin-pulling plate (223) is provided with a pin-pulling groove for the head of the arm pin (51) to extend into. The first driving member (221) is used to drive the pin-pulling plate (223) to radially displace.

8. The pin-type telescopic boom system according to claim 7, characterized in that, The insertion / removal pin end (21) is further provided with a second movable component (23) for inserting / removing the cylinder pin, the second movable component (23) including a second driving member (231) for driving the radial displacement of the cylinder pin.

9. The pin-type telescopic boom system according to claim 8, characterized in that, The first driving element (221) and the second driving element (231) are motors, and an interlock circuit is provided between the first driving element (221) and the second driving element (231).

10. A pin-type telescopic working device, characterized in that, Includes the pin-type telescopic boom system according to any one of claims 1 to 9.

Images