Crane supporting leg structure and crane

Abstract

The invention relates to the technical field of cranes, and discloses a crane supporting leg structure and a crane, and the crane supporting leg structure comprises an outer mounting body, a telescopic arm, a supporting leg, a hydraulic pipeline, a pressure sensor, a pull rope displacement sensor and a pressure detection wire harness. The telescopic arm is slidably inserted into a first sliding groove in the outer mounting body, the supporting leg is connected with the telescopic arm, the hydraulic pipeline is connected with the supporting leg, the pressure sensor is arranged on the supporting leg, the pull rope displacement sensor is connected with the outer mounting body, and a pull rope of the pull rope displacement sensor is connected with the telescopic arm. The pressure detection wire harness is arranged in the extending direction of the hydraulic pipeline and connected with the pipe wall of the hydraulic pipeline, and the pressure detection wire harness is in communication connection with the pressure sensor. After the telescopic arm extends, the pressure detection wire harness can export a detection signal of the pressure sensor, the pull rope displacement sensor can detect the extension distance of the telescopic arm, and the pull rope displacement sensor can accurately detect the extension length of the pull rope, so that the influence of the thickness of the wire harness on the detection result is eliminated, and the detection error is reduced.

Description

Technical Field

[0001] This application relates to the field of crane technology, specifically to a crane outrigger structure and a crane. Background Technology

[0002] Outriggers are key support components of cranes, increasing the support span and preventing overturning. The outrigger structure is hydraulically driven and consists of two parts: horizontal extension and vertical support. The outriggers are connected to the telescopic boom; under hydraulic pressure, the boom extends horizontally, and the outriggers extend vertically. During operation, it is necessary to monitor the extension length of the boom and the pressure on the outriggers. For pressure on the outriggers, pressure sensors are typically installed, transmitting signals via a detection harness. For the extension length of the boom, a measuring roller is usually used. The detection harness is wound around the measuring roller and connected to the pressure sensor on the outrigger. When the boom extends, the detection harness is pulled out from the measuring roller, causing it to rotate. The pull-out length of the detection harness can be calculated from the circumference of the measuring roller and the number of rotations; this is the extension length of the boom. The ability to pull out the detection harness also ensures that the connection between the detection harness and the pressure sensor on the outrigger remains when the outrigger and boom move synchronously.

[0003] However, when the detection harness is wound around the measuring drum, the length of each turn of the detection harness is different from the circumference of the measuring drum due to the influence of the thickness of the detection harness itself. Therefore, the extension length of the telescopic arm calculated by the circumference of the measuring drum and the number of turns has a large error.

[0004] Therefore, how to solve or improve the problem that the extension length of the telescopic arm calculated by measuring the circumference and number of rotations of the measuring roller in the related technology has a large error has become an important technical problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, this application provides a crane outrigger structure and a crane to solve or improve the problem that the extension length of the telescopic boom obtained by calculating the circumference and number of rotations of the measuring roller in the crane outrigger structure has a large error.

[0006] In a first aspect, this application provides a crane outrigger structure, comprising:

[0007] The external mounting body is provided with a first sliding groove;

[0008] The telescopic arm is slidably inserted into the first slide groove;

[0009] Outriggers, connected to the telescopic arm, are adapted to support the ground;

[0010] A hydraulic pipeline connected with the outrigger and adapted to conduct hydraulic oil to the outrigger;

[0011] A pressure sensor arranged on the outrigger and adapted to detect pressure applied to the outrigger;

[0012] A pull rope displacement sensor connected with the outer mounting body, a pull rope of the pull rope displacement sensor being connected with the telescopic arm;

[0013] A pressure detection wire harness arranged along an extension direction of the hydraulic pipeline and connected with a pipe wall of the hydraulic pipeline, the pressure detection wire harness being communicatively connected with the pressure sensor. In an alternative embodiment, the pressure detection wire harness is embedded in the pipe wall of the hydraulic pipeline.

[0014] In an alternative embodiment, the application further comprises:

[0015] A first pulley arranged on the outer mounting body, the pull rope of the pull rope displacement sensor being wound around the first pulley and connected with the telescopic arm.

[0016] In an alternative embodiment, the outrigger comprises:

[0017] A first hydraulic cylinder, a cylinder body of the first hydraulic cylinder being connected with the telescopic arm, the hydraulic pipeline comprising a first pipeline and a second pipeline, the first pipeline being in communication with a rodless chamber of the first hydraulic cylinder, the second pipeline being in communication with a rod chamber of the first hydraulic cylinder, the pressure sensor being arranged in the cylinder body of the first hydraulic cylinder, the pressure sensor being adapted to detect pressure in the cylinder body of the first hydraulic cylinder.

[0018] A support connected with a piston rod of the first hydraulic cylinder and adapted to be supported on the ground.

[0019] In an alternative embodiment, the pressure sensor comprises a first pressure sensor and a second pressure sensor, the first pressure sensor being arranged in the rodless chamber of the first hydraulic cylinder and adapted to detect pressure in the rodless chamber of the first hydraulic cylinder, the second pressure sensor being arranged in the rod chamber of the first hydraulic cylinder and adapted to detect pressure in the rod chamber of the first hydraulic cylinder.

[0020] In an alternative embodiment, the pressure detection wire harness comprises a first wire harness and a second wire harness, the first wire harness being communicatively connected with the first pressure sensor, the first wire harness being arranged along an extension direction of the first pipeline and connected with a pipe wall of the first pipeline, the second wire harness being arranged along an extension direction of the second pipeline and connected with a pipe wall of the second pipeline.

[0021] In an alternative embodiment, the application further comprises:

[0022] A second hydraulic cylinder, a cylinder body of the second hydraulic cylinder is connected with the outer mounting body, a piston rod of the second hydraulic cylinder is connected with the telescopic arm, a pipe wall of the hydraulic pipeline is connected with the cylinder body of the second hydraulic cylinder, the hydraulic pipeline comprises a reserved pipe section, a length of the reserved pipe section is greater than a maximum extension length of the telescopic arm.

[0023] In an alternative embodiment, the telescopic arm comprises a first telescopic arm and a second telescopic arm, the first telescopic arm is provided with a second sliding groove, the first telescopic arm is slidably inserted into the first sliding groove, the second telescopic arm is slidably inserted into the second sliding groove, the supporting leg is connected with the second telescopic arm, a pull rope of the pull rope displacement sensor is connected with the first telescopic arm.

[0024] The crane supporting leg structure further comprises:

[0025] A third hydraulic cylinder, a cylinder body of the third hydraulic cylinder is connected with the outer mounting body;

[0026] A second pulley, connected with a piston rod of the third hydraulic cylinder;

[0027] A first rope, wound around the second pulley, two ends of the first rope are respectively connected with the outer mounting body and the second telescopic arm;

[0028] A third pulley, connected with the first telescopic arm;

[0029] A second rope, wound around the third pulley, two ends of the second rope are respectively connected with the second telescopic arm and the outer mounting body.

[0030] In an alternative embodiment, the hydraulic pipeline comprises:

[0031] A hard pipe, arranged in the first telescopic arm and along an extension direction of the first telescopic arm, one end of the hard pipe close to the supporting leg is connected with the supporting leg;

[0032] A soft pipe, wound around the second pulley, two ends of the soft pipe are respectively connected with one end of the hard pipe away from the supporting leg and the outer mounting body.

[0033] In a second aspect, the application further provides a crane comprising any of the crane supporting leg structures described above.

[0034] The crane outrigger structure provided by the application is characterized in that the pressure detection wire harness is arranged along the extension direction of the hydraulic pipeline and connected with the pipe wall of the hydraulic pipeline. The pressure detection wire harness moves synchronously with the hydraulic pipeline. Since the hydraulic pipeline can be connected with the outrigger, the pressure detection wire harness moving synchronously with the hydraulic pipeline can also be connected with the outrigger, so that the detection signal of the pressure sensor is guided out through the pressure detection wire harness, and the pressure borne by the outrigger is detected. When the telescopic arm is extended, the pull rope displacement sensor can detect the extension distance of the telescopic arm. Since the pull rope displacement sensor can accurately detect the extension length of the pull rope, the influence of the wire harness thickness on the detection result is eliminated, and the detection error is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the specific embodiments or the related art, the drawings needed to be used in the specific embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0036] Figure 1 A schematic view of the telescopic arm of the crane outrigger structure of the embodiment of the application when the telescopic arm is retracted;

[0037] Figure 2 A schematic view of the telescopic arm of the crane outrigger structure of the embodiment of the application when the telescopic arm is extended;

[0038] Figure 3 A schematic view of the telescopic arm of another crane outrigger structure of the embodiment of the application when the telescopic arm is retracted;

[0039] Figure 4 A schematic view of the telescopic arm of another crane outrigger structure of the embodiment of the application when the telescopic arm is extended;

[0040] Figure 5 A schematic view of the hydraulic pipeline of the crane outrigger structure of the embodiment of the application.

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] 1, outer mounting body; 2, telescopic arm; 21, first telescopic arm; 22, second telescopic arm; 3, outrigger; 31, first hydraulic cylinder; 32, support; 4, hydraulic pipeline; 41, reserved pipe section; 42, extension pipe section; 43, connecting pipe section; 44, hard pipe; 45, soft pipe; 5, pressure sensor; 51, first pressure sensor; 52, second pressure sensor; 6, pull rope displacement sensor; 7, pressure detection wire harness; 8, first pulley; 9, second hydraulic cylinder; 10, third hydraulic cylinder; 11, second pulley; 12, first rope; 13, third pulley; 14, second rope. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] The following is combined Figures 1 to 5 This describes an embodiment of the present application.

[0045] According to embodiments of this application, in one aspect, a crane outrigger structure is provided, such as... Figure 1 As shown, the system includes an external mounting body 1, a telescopic arm 2, outriggers 3, piping, a pressure sensor 5, a pull rope displacement sensor 6, and a pressure detection harness 7. The external mounting body 1 has a first sliding groove. The telescopic arm 2 is slidably inserted into the first sliding groove, extending and retracting as it slides along it. The outriggers 3 are connected to the telescopic arm 2, allowing them to move outwards as the arm extends. The outriggers 3 support the external mounting body 1 on the ground. A hydraulic line 4 is connected to the outriggers 3, allowing hydraulic oil to flow through them, enabling their extension and retraction.

[0046] Pressure sensor 5 is mounted on outrigger 3 and is used to detect the pressure on outrigger 3. Pressure detection harness 7 is installed along the extension direction of hydraulic line 4 and connected to the wall of hydraulic line 4. Pressure detection harness 7 is communicatively connected to pressure sensor 5. In this way, pressure detection harness 7 moves synchronously with hydraulic line 4. Since hydraulic line 4 can ensure connection with outrigger 3, pressure detection harness 7, which moves synchronously with hydraulic line 4, can also ensure connection with outrigger 3. This allows the detection signal from pressure sensor 5 to be exported through pressure detection harness 7, thereby detecting the pressure on outrigger 3.

[0047] The pull rope displacement sensor 6 has a body and a pull rope. The body of the pull rope displacement sensor 6 is connected to the external mounting body 1, and the pull rope of the pull rope displacement sensor 6 is connected to the telescopic arm 2. When the telescopic arm 2 extends, the pull rope of the pull rope displacement sensor 6 is pulled out, so that the pull rope displacement sensor 6 can detect the extension length of the telescopic arm 2.

[0048] With this setting, such as Figure 2As shown, after the telescopic arm 2 is extended, hydraulic oil is introduced into the outrigger 3 through the hydraulic pipeline 4, so that the outrigger 3 is extended and grounded. At this time, the pull rope displacement sensor 6 can detect the distance of the extension of the telescopic arm 2, and the pressure detection wire harness 7 can guide the detection signal of the pressure sensor 5 out, so as to realize the detection of the extension length of the telescopic arm 2 and the pressure condition of the outrigger 3. Since the pull rope displacement sensor 6 can accurately detect the extension length of the pull rope, the influence of the wire harness thickness on the detection result is eliminated, and the detection error is reduced.

[0049] The pull rope displacement sensor 6 is also called a pull rope sensor, a pull rope electronic ruler, and a pull rope encoder. The pull rope displacement sensor 6 is wound around a threaded hub by a stretchable stainless steel pull rope. The hub is connected with a precision rotary inductor. The inductor can be an incremental encoder, an absolute (independent) encoder, a hybrid or conductive plastic rotary potentiometer, a synchronizer or a resolver. In operation, the pull rope type displacement sensor is installed in a fixed position, and the pull rope is tied to a moving object. The linear motion of the pull rope is aligned with the motion axis of the moving object. When the motion occurs, the pull rope is stretched and contracted. An internal spring ensures that the tension of the pull rope remains unchanged. The threaded hub drives the precision rotary inductor to rotate, and outputs an electrical signal proportional to the movement distance of the pull rope. The measurement output signal can obtain the displacement, direction or speed of the moving object.

[0050] In one embodiment, as shown in Figure 5 The pressure detection wire harness 7 is embedded in the pipe wall of the hydraulic pipeline 4, that is, the hydraulic pipeline 4 has an oil channel for conveying hydraulic oil and a wire harness channel for the pressure detection wire harness 7 to pass through. In this way, the pressure detection wire harness 7 is connected with the hydraulic pipeline 4 as a whole, so that the pressure detection wire harness 7 moves synchronously with the hydraulic pipeline 4, so that the pressure detection wire harness 7 can be connected with the outrigger 3 when the hydraulic pipeline 4 is connected with the outrigger 3, and the detection signal of the pressure sensor 5 is guided out through the pressure detection wire harness 7.

[0051] In this way, the pressure detection wire harness 7 does not need to be designed and arranged in an additional position, and the wiring is more convenient.

[0052] In one embodiment, as shown in Figure 1 and Figure 2 The crane outrigger structure further includes a first pulley 8 arranged on the outer mounting body 1. The pull rope of the pull rope displacement sensor 6 is wound around the first pulley 8 and connected with the telescopic arm 2, so that the extension direction of the pull rope from the pull rope displacement sensor 6 to the first pulley 8 is consistent with the pulling direction of the pull rope. At the same time, the extension direction of the pull rope from the first pulley 8 to the telescopic arm 2 is consistent with the telescopic direction of the telescopic arm 2.

[0053] In this way, the first pulley 8 plays a guiding role, reduces the interference of the pull rope when being pulled out, avoids the pull rope being blocked during the pulling-out process, and affects the detection result of the pull rope displacement sensor 6, so that the detection of the extension distance of the telescopic arm 2 is more accurate.

[0054] Specifically, the first pulley 8 has a pulley frame and a pulley. The pulley frame of the first pulley 8 is connected to the mounting frame, and the pulley is rotationally connected to the pulley frame. The pull rope of the pull rope displacement sensor 6 is connected to the telescopic arm 2 after passing through the pulley.

[0055] In one embodiment, as shown in Figure 1 and Figure 2 The outrigger 3 includes a first hydraulic cylinder 31 and a support 32. The first hydraulic cylinder 31 has a cylinder body, a piston slidingly connected in the cylinder body, and a piston rod connected to the piston. The two sides of the piston in the cylinder body are a rodless cavity and a rod cavity, respectively. The pressure sensor 5 is arranged in the cylinder body of the first hydraulic cylinder 31 and is used to detect the pressure in the cylinder body of the first hydraulic cylinder 31.

[0056] The cylinder body of the first hydraulic cylinder 31 is connected to the outer end of the telescopic arm 2, the support 32 is connected to the piston rod of the first hydraulic cylinder 31, and the piston rod of the first hydraulic cylinder 31 is retracted to drive the support 32 to move close to and away from the ground. The hydraulic pipeline 4 includes a first pipeline and a second pipeline, the first pipeline is in communication with the rodless cavity of the first hydraulic cylinder 31, and the second pipeline is in communication with the rod cavity of the first hydraulic cylinder 31.

[0057] When hydraulic oil is introduced through the first pipeline, the piston rod of the first hydraulic cylinder 31 is pushed out, so that the support 32 moves close to the ground until it is supported on the ground, and the hydraulic oil in the rod cavity is discharged from the second pipeline.

[0058] When hydraulic oil is introduced through the second pipeline, the piston rod of the first hydraulic cylinder 31 is pushed out, so that the support 32 moves away from the ground to cancel the support, and the hydraulic oil in the rodless cavity is discharged from the first pipeline.

[0059] In some embodiments, the outrigger 3 further includes a box body connected to the outer end of the telescopic arm 2, and the cylinder body of the first hydraulic cylinder 31 is connected to the box body and connected with the box body. Thus, the box body can protect the first hydraulic cylinder 31.

[0060] In one embodiment, as shown in Figure 1 and Figure 2As shown, the pressure sensor 5 includes a first pressure sensor 51 and a second pressure sensor 52. The first pressure sensor 51 is arranged in the rodless cavity of the first pressure cylinder and is used to detect the pressure of the rodless cavity of the first pressure cylinder. The second pressure sensor 52 is arranged in the rod cavity of the first pressure cylinder and is used to detect the pressure of the rod cavity of the first pressure cylinder. The pressure detection wire harness 7 is in communication connection with the first pressure sensor 51 and the second pressure sensor 52 respectively, and is used to guide out the detection signals of the first pressure sensor 51 and the second pressure sensor 52.

[0061] In this way, for the first pressure cylinder, not only the pressure of the rodless cavity can be detected, but also the pressure of the rod cavity can be detected, and the detection is more comprehensive.

[0062] In one embodiment, the pressure detection wire harness 7 includes a first wire harness and a second wire harness. The first wire harness is in communication connection with the first pressure sensor 51, and is arranged along the extension direction of the first pipeline and connected with the pipe wall of the first pipeline, so that the first wire harness moves synchronously with the first pipeline, and thus the first wire harness can be connected with the support leg 3 when the first pipeline can be connected with the support leg 3.

[0063] The second wire harness is in communication connection with the second pressure sensor 52, and is arranged along the extension direction of the second pipeline and connected with the pipe wall of the second pipeline, so that the second wire harness moves synchronously with the second pipeline, and thus the second wire harness can be connected with the support leg 3 when the second pipeline can be connected with the support leg 3.

[0064] In this way, the first wire harness and the second wire harness are separated, avoiding signal interference between them.

[0065] In some embodiments, the first wire harness is embedded in the pipe wall of the first pipeline, and the second wire harness is embedded in the pipe wall of the second pipeline.

[0066] In one embodiment, as shown in Figure 1 and Figure 2 As shown, the crane support leg structure further includes a second hydraulic cylinder 9. The second hydraulic cylinder 9 has a cylinder body, a piston slidingly connected in the cylinder body, and a piston rod connected to the piston. The cylinder body of the second hydraulic cylinder 9 is connected with the outer mounting body 1, and the piston rod of the second hydraulic cylinder 9 is connected with the telescopic arm 2, so that the piston rod of the second hydraulic cylinder 9 can drive the telescopic arm 2 to slide when the piston rod of the second hydraulic cylinder 9 is extended or retracted.

[0067] The pipe wall of the hydraulic pipeline 4 is connected with the cylinder body of the second hydraulic cylinder 9, and the hydraulic pipeline 4 includes a reserved pipe section 41, the length of the reserved pipe section 41 being greater than the maximum extension length of the telescopic arm 2. When the telescopic arm 2 is retracted, the reserved pipe section 41 is bent, and when the telescopic arm 2 is extended, the reserved pipe section 41 is unfolded, so that the hydraulic pipeline 4 can be connected with the support leg 3.

[0068] In some embodiments, a hollow groove is arranged in the first telescopic arm 21, and the second hydraulic cylinder 9 extends into the hollow groove. An extension pipe section 42 is connected to the reserved pipe section 41, and the outer wall at the connection between the extension pipe section 42 and the reserved pipe section 41 is connected to the cylinder body of the second hydraulic cylinder 9. The extension pipe section 42 is arranged along the cylinder body of the second hydraulic cylinder 9, and the pipe wall of the extension pipe section 42 is connected to the cylinder body of the second hydraulic cylinder 9. Thus, the hydraulic pipeline 4 is led out.

[0069] Specifically, the extension pipe section 42 can be fixedly connected to the cylinder body of the second hydraulic cylinder 9 by using a U-shaped clamp. In order to ensure the stability of the hydraulic pipeline 4, the hydraulic pipeline 4 can further include a connecting pipe section 43, the reserved pipe section 41 is connected between the connecting pipe section 43 and the extension pipe section 42, the connecting pipe section 43 is connected to the support leg 3, and the pipe wall of the connecting pipe section 43 is connected to the telescopic arm 2.

[0070] The connecting pipe section 43 can be fixedly connected to the telescopic arm 2 by using a U-shaped clamp.

[0071] In one embodiment, as shown in Figure 1 and Figure 2 the telescopic arm 2 includes a first telescopic arm 21 and a second telescopic arm 22. The first telescopic arm 21 is provided with a second sliding groove, and the first telescopic arm 21 is slidably inserted into the first sliding groove, so that the first telescopic arm 21 can slide along the first sliding groove. The second telescopic arm 22 is slidably inserted into the second sliding groove, so that the second telescopic arm 22 can slide along the second sliding groove, and the support leg 3 is connected to the second telescopic arm 22.

[0072] The crane support leg structure further includes a third hydraulic cylinder 10, a second pulley 11, a first rope 12, a second sliding and a second rope 14. The third hydraulic cylinder 10 has a cylinder body, a piston slidably connected in the cylinder body, and a piston rod connected to the piston. The cylinder body of the third hydraulic cylinder 10 is connected to the outer mounting body 1. The second pulley 11 is connected to the piston rod of the third hydraulic cylinder 10, the first rope 12 is wound around the second pulley 11, and the first end of the first rope 12 is connected to the outer mounting body 1, and the second end of the first rope 12 is connected to the second telescopic arm 22. In this way, the second pulley 11 and the first rope 12 form a movable pulley structure, and when the piston rod of the third hydraulic cylinder 10 extends, the first rope 12 pulls the second telescopic arm 22 to extend.

[0073] The third pulley 13 is connected to the first telescopic arm 21, the second rope 14 is wound around the third pulley 13, and the first end of the second rope 14 is connected to the second telescopic arm 22, and the second end of the second rope 14 is connected to the outer mounting body 1. In this way, the third pulley 13 and the second rope 14 form a movable pulley structure. When the piston rod of the third hydraulic cylinder 10 extends, the first rope 12 pulls the second telescopic arm 22 to extend, and at the same time, the second rope 14 pulls the first telescopic arm 21 to extend, so as to realize the extension of the first telescopic arm 21 and the second telescopic arm 22 at the same time, and increase the extension distance.

[0074] The pull rope of the pull rope displacement sensor 6 is connected with the first telescopic arm 21, so that the extension distance of the first telescopic arm 21 can be detected by the pull rope displacement sensor 6, and according to the principle of the block and tackle transmission, the extension distance of the second telescopic arm 22 is twice that of the first telescopic arm 21, so that the extension distance of the second telescopic arm 22, i.e. the extension distance of the outrigger 3, can be indirectly detected.

[0075] Specifically, the outrigger 3 is connected to the outer end of the second telescopic arm 22, the second telescopic arm 22 is provided with a hollow slot, the third hydraulic cylinder 10 extends into the hollow slot of the second telescopic arm 22, the piston rod of the second telescopic arm 22 is located at the outer end, the first end of the first rope 12 extends inward from the second pulley 11 and is connected with the outer mounting body 1, and the second end of the first rope 12 extends outward from the second pulley 11 and is connected with the inner wall of the first sliding groove.

[0076] In one embodiment, as shown in Figure 3 and Figure 4 Figure 3 Figure 4 , the hydraulic pipeline 4 includes a hard pipe 44 and a flexible pipe 45. The hard pipe 44 is arranged in the first telescopic arm 21, and the hard pipe 44 is arranged along the extension direction of the first telescopic arm 21, one end of the hard pipe 44 close to the outrigger 3 is connected with the outrigger 3, the first end of the flexible pipe 45 is in communication with the end of the hard pipe 44 away from the outrigger 3, the flexible pipe 45 is arranged around the second pulley 11, and the second end of the flexible pipe 45 is connected with the outer mounting body 1. In this way, when the piston rod of the third hydraulic cylinder 10 extends, the first rope 12 pulls the second telescopic arm 22 to extend, and in this process, the hard pipe 44 moves together with the second telescopic arm 22. While the flexible pipe 45 is always arranged around the second pulley 11, the movement of the flexible pipe 45 is consistent with that of the first rope 12, so the flexible pipe 45 can always be in communication with the hard pipe 44. To ensure that the hydraulic pipeline 4 is always connected with the outrigger 3 when the first telescopic arm 21 extends.

[0077] According to the embodiment of the present application, on the other hand, a crane is also provided, which includes any of the crane outrigger structures, wherein the outer mounting body 1 is arranged on the crane body, and the crane has the same technical effects as the crane outrigger structure, and thus will not be described again.

[0078] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the present application.

Claims

1. A crane outrigger structure, characterized in that, include: The external mounting body (1) is provided with a first sliding groove; The telescopic arm (2) is slidably inserted into the first slide groove; Outrigger (3), connected to the telescopic arm (2), and adapted to support the ground; A hydraulic line (4) is connected to the outrigger (3) and is adapted to conduct hydraulic oil to the outrigger (3); A pressure sensor (5) is disposed on the outrigger (3) and is used to detect the pressure on the outrigger (3); A pull rope displacement sensor (6) is connected to the external mounting body (1), and the pull rope of the pull rope displacement sensor (6) is connected to the telescopic arm (2); The pressure detection harness (7) is arranged along the extension direction of the hydraulic pipeline (4) and connected to the pipe wall of the hydraulic pipeline (4). The pressure detection harness (7) is communicatively connected to the pressure sensor (5).

2. The crane outrigger structure according to claim 1, characterized in that, The pressure detection harness (7) is embedded in the wall of the hydraulic pipeline (4).

3. The crane outrigger structure according to claim 1, characterized in that, Also includes: The first pulley (8) is mounted on the outer mounting body (1), and the pull rope of the pull rope displacement sensor (6) passes around the first pulley (8) and is connected to the telescopic arm (2).

4. The crane outrigger structure according to claim 1, characterized in that, The outrigger (3) includes: The first hydraulic cylinder (31) has its cylinder body connected to the telescopic arm (2). The hydraulic pipeline (4) includes a first pipeline and a second pipeline. The first pipeline is connected to the rodless chamber of the first hydraulic cylinder (31), and the second pipeline is connected to the rod chamber of the first hydraulic cylinder (31). The pressure sensor (5) is disposed in the cylinder body of the first hydraulic cylinder (31) and is adapted to detect the pressure in the cylinder body of the first hydraulic cylinder (31). The support member (32) is connected to the piston rod of the first hydraulic cylinder (31) and is adapted to be supported on the ground.

5. The crane outrigger structure according to claim 4, characterized in that, The pressure sensor (5) includes a first pressure sensor (51) and a second pressure sensor (52). The first pressure sensor (51) is disposed in the rodless chamber of the first hydraulic cylinder (31) and is adapted to detect the pressure in the rodless chamber of the first hydraulic cylinder (31). The second pressure sensor (52) is disposed in the rod chamber of the first hydraulic cylinder (31) and is adapted to detect the pressure in the rod chamber of the first hydraulic cylinder (31).

6. The crane outrigger structure according to claim 5, characterized in that, The pressure detection harness (7) includes a first harness and a second harness. The first harness is communicatively connected to the first pressure sensor (51). The first harness is arranged along the extension direction of the first pipeline and connected to the pipe wall of the first pipeline. The second harness is arranged along the extension direction of the second pipeline and connected to the pipe wall of the second pipeline.

7. The crane outrigger structure according to claim 1, characterized in that, Also includes: The second hydraulic cylinder (9) has its cylinder body connected to the external mounting body (1), and its piston rod connected to the telescopic arm (2). The wall of the hydraulic pipeline (4) is connected to the cylinder body of the second hydraulic cylinder (9). The hydraulic pipeline (4) includes a reserved pipe section (41), the length of which is greater than the maximum extension length of the telescopic arm (2).

8. The crane outrigger structure according to claim 1, characterized in that, The telescopic arm (2) includes a first telescopic arm (21) and a second telescopic arm (22). The first telescopic arm (21) is provided with a second sliding groove. The first telescopic arm (21) is slidably inserted into the first sliding groove. The second telescopic arm (22) is slidably inserted into the second sliding groove. The support leg (3) is connected to the second telescopic arm (22). The pull rope of the pull rope displacement sensor (6) is connected to the first telescopic arm (21). The crane outrigger structure also includes: The third hydraulic cylinder (10) is connected to the outer mounting body (1). The second pulley (11) is connected to the piston rod of the third hydraulic cylinder (10); A first rope (12) is wound around the second pulley (11), and the two ends of the first rope (12) are respectively connected to the outer mounting body (1) and the second telescopic arm (22); The third pulley (13) is connected to the first telescopic arm (21); The second rope (14) is wound around the third pulley (13), and the two ends of the second rope (14) are respectively connected to the second telescopic arm (22) and the external mounting body (1).

9. The crane outrigger structure according to claim 8, characterized in that, The hydraulic pipeline (4) includes: A rigid tube (44) is disposed inside the first telescopic arm (21) and along the extension direction of the first telescopic arm (21). The end of the rigid tube (44) near the support leg (3) is connected to the support leg (3). A flexible hose (45) is wound around the second pulley (11), and the two ends of the flexible hose (45) are respectively connected to the end of the rigid pipe (44) away from the support leg (3) and the external mounting body (1).

10. A crane, characterized in that, Includes the crane outrigger structure as described in any one of claims 1-9.

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