Telescopic arm crawler crane

Abstract

The utility model provides a telescopic arm crawler crane which comprises a main machine, a main arm assembly, a counter weight assembly, a crawler frame module and a lower vehicle, the main arm assembly is fixedly connected to the main machine, the counter weight assembly is connected to the other end, away from the main arm assembly, of the main machine, a first adjusting mechanism is connected between the counter weight assembly and the main machine, and the crawler frame module is connected to the lower vehicle. The first adjusting mechanism can adjust the distance between the balance weight assembly and the main machine, the lower vehicle is connected with the main machine, the track frame module is connected with the lower vehicle, and a second adjusting mechanism is connected between the lower vehicle and the track frame module. And the second adjusting mechanism can adjust the distance between the track frame module and the lower vehicle. The telescopic arm crawler crane disclosed by the utility model has higher practicability, flexibility and economical efficiency, is simple and efficient in the use process, and reduces the cost.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a telescopic arm crawler crane. Background Art

[0002] Telescopic crawler cranes combine the advantages of truck cranes and crawler cranes. With their powerful operating capacity, fast operating efficiency and flexible operating methods, they have become an important product in the field of engineering cranes. Telescopic crawler cranes are suitable for construction sites with no roads, muddy roads, rugged and inclined surfaces. The crawler chassis of telescopic crawler cranes has a strong driving ability and a small ground pressure ratio, which gives the whole machine the ability to meet the construction requirements of the above-mentioned sites. However, the existing telescopic crawler cranes have the following problems: (1) The main arm of a telescopic crawler crane usually has only one fixed combination, which can only complete the normal working conditions of the crane. When it is used in special working conditions, it is necessary to spend expensive funds to purchase new equipment and new cranes. (2) The counterweight is only one Installation position, because the counterweight plays the role of stabilizing torque, for the same amplitude and the same load lifting, the counterweight cannot be reduced. When the weight of the counterweight is too heavy, it will violate national transportation regulations if it is installed on the whole machine and transported together with the whole machine by trailer. Therefore, the counterweight needs to be removed for separate transportation, but separate transportation will increase the transfer operation cost; when faced with the lifting needs of multiple loads, one counterweight cannot meet the needs, and it is necessary to increase the counterweight to meet the needs. At this time, the problem of increased operating costs will arise; (3) The crawler track of the telescopic boom crawler crane in the prior art has only one full-extended track gauge to provide the whole machine operation. If the full-extended track gauge exceeds the requirement of a narrow road surface, it will inevitably affect the construction, and may even withdraw from the construction site due to incompetence, and fail to meet the needs of the operation. Utility Model Content

[0003] In view of this, an object of the utility model is to provide a telescopic boom crawler crane, which has higher practicality, flexibility and economy, is simple and efficient in use, and reduces costs.

[0004] The utility model provides a telescopic arm crawler crane, comprising a main machine, a main arm assembly, a counterweight assembly, a crawler frame module and an undercarriage, wherein the main arm assembly is fixedly connected to the main machine, the counterweight assembly is connected to the other end of the main machine away from the main arm assembly, a first adjusting mechanism is connected between the counterweight assembly and the main machine, the first adjusting mechanism can adjust the distance between the counterweight assembly and the main machine, the undercarriage is connected to the main machine, the crawler frame module is connected to the undercarriage, a second adjusting mechanism is connected between the undercarriage and the crawler frame module, the second adjusting mechanism can adjust the distance between the crawler frame module and the undercarriage.

[0005] In one embodiment, the counterweight assembly includes a connecting frame, a sliding mechanism and a counterweight module, the connecting frame is fixedly connected to the main engine, the counterweight module is connected to the connecting frame through the sliding mechanism, and the counterweight module can move on the connecting frame toward or away from the main engine through the sliding mechanism.

[0006] In one embodiment, the first adjustment mechanism includes a first roller, a first wiring harness and a first sensor, one end of the first wiring harness is fixedly connected to the first roller and wound around the first roller, the other end of the first wiring harness is connected to the counterweight module, the first wiring harness can control the distance between the counterweight module and the main machine, the first sensor is connected to the first roller, and the first sensor detects the distance between the counterweight module and the main machine according to the change of the first wiring harness.

[0007] In one embodiment, the first adjustment mechanism includes a driving mechanism and a second sensor, one end of the driving mechanism is fixedly connected to the host, and the other end of the driving mechanism is connected to the counterweight module, the driving mechanism can drive the counterweight module to move toward or away from the host, the connecting frame is provided with at least three touch points, each of the touch points is arranged at intervals along the length direction of the connecting frame, the second sensor is connected to the counterweight module, when the counterweight module moves, the second sensor contacts the touch points and detects the distance between the counterweight module and the host.

[0008] In one embodiment, the counterweight module is 0 counterweight; or the counterweight module includes at least one first counterweight; or the counterweight module includes at least one first counterweight and at least one second counterweight, and the second counterweight is arranged on the first counterweight; or the counterweight module includes at least one first counterweight, at least one second counterweight and at least one third counterweight, and the second counterweight is arranged on the first counterweight, and the third counterweight is arranged on the second counterweight.

[0009] In one embodiment, the second adjustment mechanism includes a telescopic mechanism, one end of which is fixedly connected to the undercarriage, and the other end of which is fixedly connected to the crawler frame module, and the telescopic mechanism can drive the crawler frame module to move toward or away from the undercarriage.

[0010] In one embodiment, the second adjustment mechanism includes a third sensor, the third sensor is fixedly connected to the telescopic mechanism, and the third sensor detects the distance between the crawler frame module and the lower vehicle according to the telescopic change of the telescopic mechanism.

[0011] In one embodiment, the main boom assembly includes a U-section boom section, where U is a positive integer greater than 1; or the main boom assembly includes a Un-section boom section, where U is a positive integer greater than 1, n is a positive integer greater than 1, and U is greater than n; or the main boom assembly includes a U-section boom section and a terminal boom section, where U is a positive integer greater than 1; or the main boom assembly includes a Un-section boom section and a terminal boom section, where U is a positive integer greater than 1, n is a positive integer greater than 1, and U is greater than n.

[0012] In one embodiment, the terminal boom section comprises a first terminal boom section having a first length and a second terminal boom section having a second length, wherein the first length is greater than the second length.

[0013] In one embodiment, the telescopic boom crawler crane is further connected to a torque limiter and a control system, and the control system transmits data signals of the counterweight assembly, the main boom assembly and the crawler frame module to the torque limiter.

[0014] The counterweight assembly of the telescopic boom crawler crane of the utility model can be infinitely moved through the first adjusting mechanism, and cooperates with the telescopic arm section of the main arm assembly to realize the use conditions of various counterweight weights, so that the telescopic boom crawler crane has higher practicality and flexibility, greatly improves the market competitiveness of the product, greatly reduces the operation and use costs of the telescopic boom crawler crane, and improves the lifting performance of the whole machine; in addition, the crawler frame module of the telescopic boom crawler crane has an infinitely variable track outer width dimension, which can meet the width limit requirements of different construction sites and maximize the lifting performance of the main machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of a telescopic boom crawler crane in a first embodiment of the utility model, in which the counterweight assembly is in the front position;

[0017] Figure 2 It is a structural schematic diagram of a telescopic boom crawler crane in a first embodiment of the utility model, in which the counterweight assembly is in a rear position;

[0018] Figure 3 It is a partial structural schematic diagram of the first adjustment mechanism of the first embodiment of the utility model;

[0019] Figure 4It is a structural schematic diagram of a counterweight combination of the counterweight assembly of the first embodiment of the utility model;

[0020] Figure 5 It is a structural schematic diagram of another counterweight combination of the counterweight assembly of the first embodiment of the utility model;

[0021] Figure 6 It is a structural schematic diagram of a telescopic boom crawler crane from one perspective of the first embodiment of the utility model;

[0022] Figure 7 It is a schematic diagram of the structure of the crawler frame module of the telescopic arm crawler crane of the first embodiment of the utility model in a fully retracted state;

[0023] Figure 8 It is a schematic diagram of the structure of the crawler frame module of the telescopic arm crawler crane of the first embodiment of the utility model in a semi-extended state;

[0024] Fig. 9 It is a schematic diagram of the structure of the crawler frame module of the telescopic arm crawler crane of the first embodiment of the utility model in a fully extended state;

[0025] Fig.10a It is a structural schematic diagram of the first length of the end boom section of the first embodiment of the utility model;

[0026] Fig.10b It is a structural schematic diagram of the second length of the end boom section of the first embodiment of the utility model;

[0027] Fig.11 It is a structural schematic diagram of the connection between the first adjustment mechanism and the counterweight assembly of the second embodiment of the utility model;

[0028] Explanation of the accompanying drawings: main machine-11; slewing support structure-12; main arm assembly-13; fixed arm-131; first end arm section-132; second end arm section-133; end arm section-132; counterweight assembly-14; connecting frame-141; sliding mechanism-142; counterweight module-143; first counterweight-1431; second counterweight-1432; third counterweight-1433; boom cylinder module-15; control room module-16; crawler frame module-17; get-off-18; first adjusting mechanism-191; first roller-1911; first wiring harness-1912; first sensor-1913; driving mechanism-1914; second adjusting mechanism-192; telescopic mechanism-1921.

[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0033] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0034] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0035] First embodiment

[0036] like Figures 1 to 10bAs shown, the telescopic boom crawler crane includes a main machine 11, a slewing support structure 12, a main boom assembly 13, a counterweight assembly 14, a luffing cylinder module 15, a control room module 16, a crawler frame module 17 and an undercarriage 18. The main machine 11 is connected to the slewing support structure 12, a fixed arm 131 of the main boom assembly 13 is fixedly connected to the main machine 11, the main boom assembly 13 also includes a plurality of arm sections, each arm section is telescopically connected to the fixed arm 131 in turn, the counterweight assembly 14 is connected to the other end of the main machine 11 away from the main boom assembly 13, and a first adjusting mechanism 191 is connected between the counterweight assembly 14 and the main machine 11, and the first adjusting mechanism 191 can adjust the distance between the counterweight assembly 14 and the main machine 11, so as to achieve The counterweight assembly 14 has stepless telescopic adjustment, one end of the luffing cylinder module 15 is connected to the main machine 11, and the other end of the luffing cylinder module 15 is connected to the boom of the telescopic arm crawler crane. The luffing cylinder module 15 lifts or lowers the weight by changing the amplitude angle of the boom. The control room module 16 is connected to the slewing support structure 12, and the lower vehicle 18 is connected to the main machine 11. Specifically, the lower vehicle 18 is connected to the main machine 11 through a slewing support, and the crawler frame module 17 is connected to the lower vehicle 18. A second adjusting mechanism 192 is connected between the lower vehicle 18 and the crawler frame module 17. The second adjusting mechanism 192 can adjust the distance between the crawler frame module 17 and the lower vehicle 18, thereby realizing stepless telescopic adjustment of the crawler frame module 17. In this embodiment, the main arm assembly 13, the boom cylinder module 15 and the control room module 16 all adopt the connection method common to the truck crane, and the length, width and connection method of the counterweight assembly 14 all adopt the connection method common to the telescopic arm crawler crane and the lattice arm crawler crane, so that the components of the telescopic arm crawler crane can be common with the components of the truck crane of the same tonnage; the four wheels and one belt of the crawler frame module 17 and the structural dimensions of the crawler frame are common to the crawler frame of the lattice arm crawler crane of the same level; it can reduce the inventory of spare parts, reduce operating costs, and have higher versatility, bringing convenience and attraction to the majority of truck crane customers, prompting the bosses of truck cranes to get involved in the ranks of crawler cranes, and bringing new economic growth points to the bosses.

[0037] The counterweight assembly 14 of the telescopic boom crawler crane of the utility model can be infinitely moved through the first adjusting mechanism 191, and cooperates with the telescopic arm section of the main arm assembly 13 to realize the use conditions of various counterweight weights, so that the telescopic boom crawler crane has higher practicality and flexibility, greatly improves the market competitiveness of the product, greatly reduces the operation and use costs of the telescopic boom crawler crane, and improves the lifting performance of the whole machine; in addition, the crawler frame module 17 of the telescopic boom crawler crane has an infinitely variable track outer width dimension, which can meet the width limit requirements of different construction sites and maximize the lifting performance of the main machine 11.

[0038] like Figure 1 and Figure 2As shown, the counterweight assembly 14 includes a connecting frame 141, a sliding mechanism 142 and a counterweight module 143. The connecting frame 141 is fixedly connected to the main machine 11; specifically, the connecting frame 141 is fixedly connected to the main machine 11 by bolts, and the counterweight module 143 is connected to the connecting frame 141 by the sliding mechanism 142. The counterweight module 143 can move on the connecting frame 141 toward or away from the main machine 11 through the sliding mechanism 142. In this embodiment, the sliding mechanism 142 is, for example, a combination of a slider and a guide rail or a slide rail meshing with a slide rail; wherein, the displacement of the counterweight assembly 14 is, for example, a ground displacement or a load displacement.

[0039] like Figures 1 to 3 As shown, the first adjusting mechanism 191 includes a first roller 1911, a first wire harness 1912 and a first sensor 1913. The first roller 1911 is fixedly connected to the main machine 11. One end of the first wire harness 1912 is fixedly connected to the first roller 1911 and wound around the first roller 1911. The other end of the first wire harness 1912 is connected to the counterweight module 143. The first wire harness 1912 can control the distance between the counterweight module 143 and the main machine 11. The first sensor 1913 is connected to the first roller 1911. The first sensor 1913 detects the distance between the counterweight module 143 and the main machine 11 according to the change of the first wire harness 1912. The first sensor 1913 is preferably a wire pulling sensor, wherein the control room module 16 can control the rolling direction and speed of the wire pulling device; therefore, the first adjusting mechanism 191 is preferably a wire pulling device.

[0040] like Figure 4 and Figure 5 As shown, the counterweight module 143 is 0 counterweight; or the counterweight module 143 includes at least one first counterweight 1431; or the counterweight module 143 includes at least one first counterweight 1431 and at least one second counterweight 1432, and the second counterweight 1432 is arranged on the first counterweight 1431; or the counterweight module 143 includes at least one first counterweight 1431, at least one second counterweight 1432 and at least one third counterweight 1433, the second counterweight 1432 is arranged on the first counterweight 1431, and the third counterweight 1433 is arranged on the second counterweight 1432, wherein the third counterweight 1433 is a side counterweight, and the third counterweight 1433 is arranged at the left and right ends of the second counterweight 1432. The counterweight assembly 14 can be divided into different combinations from maximum tonnage to 0 tons to meet the customer's lifting needs. For example, the first counterweight 1431 is defined as Y, the second counterweight 1432 is defined as N, and the third counterweight 1433 is defined as Z. According to needs, it can be configured with (Y*3+N*8) tons, (Y*3+N*6) tons, (Y*3+N*4) tons, (Y*3+N*2) tons, (Y*3+N*2+Z*2) tons, (Y*3) tons, (Y*2) tons, Y tons or 0 tons, etc., but is not limited to this.

[0041] like Figure 1 and Figure 6 As shown, the second adjustment mechanism 192 includes a telescopic mechanism 1921 and a third sensor. One end of the telescopic mechanism 1921 is fixedly connected to the lower vehicle 18, and the other end of the telescopic mechanism 1921 is fixedly connected to the track frame module 17. The telescopic mechanism 1921 can drive the track frame module 17 to move toward or away from the lower vehicle 18 to achieve the stepless track change of the track frame module 17. The third sensor is fixedly connected to the telescopic mechanism 1921. The third sensor detects the distance between the track frame module 17 and the lower vehicle 18 according to the telescopic change of the telescopic mechanism 1921. In this embodiment, the telescopic mechanism 1921 is preferably a hydraulic cylinder, such as Figures 6 to 9 As shown, under the control of the telescopic mechanism 1921, the crawler frame module 17 is preferably in three different track gauges, which are in the fully retracted state (track gauge is S1, as shown in FIG. Figure 6 and Figure 7 ), semi-extended state (gauge is S2, such as Figure 6 and Figure 8 ) and fully extended state (gauge is S3, such as Figure 6 and Fig. 9 ) to meet the width limit requirements of different construction sites. In addition, with the support of the third sensor, the crawler frame module 17 can achieve stepless track change, and the third sensor is preferably a pull-wire sensor.

[0042] like Figure 1 As shown, the main boom assembly 13 includes a U-section boom section, where U is a positive integer greater than 1, for example, U is 5, 6 or 7, etc., to meet different main boom lengths.

[0043] In another preferred embodiment, the main arm assembly 13 includes Un arm sections, where U is a positive integer greater than 1, n is a positive integer greater than 1, and U is greater than n; for example, U-1 section, U-2 section, U-3 section or U-4 section, etc.

[0044] In another preferred embodiment, the main arm assembly 13 includes a U-section arm section and an end arm section 132, where U is a positive integer greater than 1. Fig.10a and Fig.10b As shown, the end arm section includes a first end arm section 132 having a first length and a second end arm section 133 having a second length, and the first length is greater than the second length.

[0045] In another preferred embodiment, the main boom assembly 13 includes Un boom sections and a terminal boom section, U is a positive integer greater than 1, n is a positive integer greater than 1, and U is greater than n, for example, U-1 boom section and a long boom section, U-2 boom section and a long boom section, U-3 boom section and a long boom section, U-4 boom section and a long boom section, U-1 boom section and a short boom section, U-2 boom section and a short boom section, U-3 boom section and a short boom section, U-4 boom section and a short boom section, etc., but is not limited to this.

[0046] Preferably, the extension and retraction method of the main boom assembly 13 can be a single-cylinder latch mechanism or a cylinder plus a wire rope mechanism, thereby driving each boom section to extend and retract to different lengths, thereby realizing the change of the length of the main boom assembly 13 and meeting the customer's requirements for arm length, lifting height and lifting distance.

[0047] Preferably, the telescopic crawler crane is also connected to a torque limiter and a control system. The control system transmits data signals of the counterweight assembly 14, the main arm assembly 13 and the crawler frame module 17 to the torque limiter, and the torque limiter calculates the torque, the rated load and the actual load. In this embodiment, the first sensor 1913, the second sensor and the third sensor are respectively electrically connected to the control system of the host 11 to realize the transmission of data signals and form information interaction; the torque limiter is a safety device of the telescopic crawler crane; for example, the track change position of the disembarkation 18 needs to transmit a signal to the control system through the third sensor, and the control system transmits the data signal to the torque limiter, and the torque limiter selects the working condition of the host 11 (including various combinations of the main arm assembly 13, the counterweight assembly 14, etc.) to achieve the expected lifting demand. Among them, the torque limiter obtains the torque by monitoring the data of the control system (the horizontal distance between the object to be hoisted and the main machine 11, the weight of the object to be hoisted) to control the extension and retraction of the main arm assembly 13 and the displacement of the counterweight assembly 14, so as to prevent the telescopic crawler crane from breaking the structural parts or tipping over of the whole machine due to excessive lifting, thereby achieving safety monitoring.

[0048] Second embodiment

[0049] Fig.11 Schematic diagram of the structure of the first adjustment mechanism and the counterweight assembly connected to the second embodiment of the utility model; Fig.11 As shown, the telescopic boom crawler crane of this embodiment is substantially the same in structure as the telescopic boom crawler crane of the first embodiment, except that the structure of the first adjusting mechanism 191 is different.

[0050] Specifically, the first adjustment mechanism 191 includes a driving mechanism 1914 and a second sensor. One end of the driving mechanism 1914 is fixedly connected to the host 11, and the other end of the driving mechanism 1914 is connected to the counterweight module 143. The driving mechanism 1914 can drive the counterweight module 143 to move in a direction close to or away from the host 11. The connecting frame 141 is provided with at least three touch points, namely, the front position, the middle position and the rear position. Each touch point is arranged at intervals along the length direction of the connecting frame 141. The second sensor is connected to the counterweight module 143. When the counterweight module 143 moves, the second sensor contacts the touch point and detects the distance between the counterweight module 143 and the host 11, so as to realize the counterweight of the three positions of the counterweight assembly 14. The second sensor is preferably a point sensor.

[0051] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.

Claims

1. A telescopic crawler crane, characterized in that: The invention comprises a main machine (11), a main arm assembly (13), a counterweight assembly (14), a crawler frame module (17) and an undercarriage (18), wherein the main arm assembly (13) is fixedly connected to the main machine (11), the counterweight assembly (14) is connected to the other end of the main machine (11) away from the main arm assembly (13), a first adjustment mechanism (191) is connected between the counterweight assembly (14) and the main machine (11), and the first adjustment mechanism (191) can adjust the distance between the counterweight assembly (14) and the main machine (11), the undercarriage (18) is connected to the main machine (11), the crawler frame module (17) is connected to the undercarriage (18), a second adjustment mechanism (192) is connected between the undercarriage (18) and the crawler frame module (17), and the second adjustment mechanism (192) can adjust the distance between the crawler frame module (17) and the undercarriage (18).

2. The telescopic boom crawler crane according to claim 1, characterized in that: The counterweight assembly (14) comprises a connecting frame (141), a sliding mechanism (142) and a counterweight module (143); the connecting frame (141) is fixedly connected to the main machine (11); the counterweight module (143) is connected to the connecting frame (141) via the sliding mechanism (142); and the counterweight module (143) can move on the connecting frame (141) in a direction close to or away from the main machine (11) via the sliding mechanism (142).

3. The telescopic boom crawler crane according to claim 2, characterized in that: The first adjustment mechanism (191) comprises a first roller (1911), a first wire harness (1912) and a first sensor (1913); one end of the first wire harness (1912) is fixedly connected to the first roller (1911) and is wound around the first roller (1911); the other end of the first wire harness (1912) is connected to the counterweight module (143); the first wire harness (1912) can control the distance between the counterweight module (143) and the main machine (11); the first sensor (1913) is connected to the first roller (1911); and the first sensor (1913) detects the distance between the counterweight module (143) and the main machine (11) according to changes in the first wire harness (1912).

4. The telescopic boom crawler crane according to claim 2, characterized in that: The first adjustment mechanism (191) comprises a driving mechanism (1914) and a second sensor, one end of the driving mechanism (1914) is fixedly connected to the main machine (11), and the other end of the driving mechanism (1914) is connected to the counterweight module (143), the driving mechanism (1914) can drive the counterweight module (143) to move in a direction close to or away from the main machine (11), the connecting frame (141) is provided with at least three touch points, each of which is arranged at intervals along the length direction of the connecting frame (141), the second sensor is connected to the counterweight module (143), when the counterweight module (143) moves, the second sensor contacts the touch points and detects the distance between the counterweight module (143) and the main machine (11).

5. The telescopic boom crawler crane according to claim 3 or 4, characterized in that: The counterweight module (143) is 0 counterweight; Or the counterweight module (143) includes at least one first counterweight (1431); Or the counterweight module (143) includes at least one first counterweight (1431) and at least one second counterweight (1432), and the second counterweight (1432) is arranged on the first counterweight (1431); Or the counterweight module (143) includes at least one first counterweight (1431), at least one second counterweight (1432) and at least one third counterweight (1433), wherein the second counterweight (1432) is arranged on the first counterweight (1431), and the third counterweight (1433) is arranged on the second counterweight (1432).

6. The telescopic crawler crane according to claim 5, characterized in that: The second adjustment mechanism (192) comprises a telescopic mechanism (1921), one end of the telescopic mechanism (1921) is fixedly connected to the lower vehicle (18), and the other end of the telescopic mechanism (1921) is fixedly connected to the crawler frame module (17), and the telescopic mechanism (1921) can drive the crawler frame module (17) to move in a direction close to or away from the lower vehicle (18).

7. The telescopic boom crawler crane according to claim 6, characterized in that: The second adjustment mechanism (192) comprises a third sensor, the third sensor is fixedly connected to the telescopic mechanism (1921), and the third sensor detects the distance between the crawler frame module (17) and the lower vehicle (18) according to the telescopic change of the telescopic mechanism (1921).

8. The telescopic boom crawler crane according to claim 7, characterized in that: The main boom assembly (13) includes a U-section boom section, where U is a positive integer greater than 1; or the main boom assembly (13) includes a Un-section boom section, where U is a positive integer greater than 1, n is a positive integer greater than 1, and U is greater than n; or the main boom assembly (13) includes a U-section boom section and a terminal boom section, where U is a positive integer greater than 1; or the main boom assembly (13) includes a Un-section boom section and a terminal boom section, where U is a positive integer greater than 1, n is a positive integer greater than 1, and U is greater than n.

9. The telescopic boom crawler crane according to claim 8, characterized in that: The terminal arm section comprises a first terminal arm section (132) having a first length and a second terminal arm section (133) having a second length, wherein the first length is greater than the second length.

10. The telescopic crawler crane according to claim 9, characterized in that: The telescopic boom crawler crane is also connected to a torque limiter and a control system, and the control system transmits data signals of the counterweight assembly (14), the main boom assembly (13) and the crawler frame module (17) to the torque limiter.

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