Engineering machinery traction force testing device and method

Abstract

The invention provides an engineering machinery traction force testing device and method.The engineering machinery traction force testing device comprises a traction force testing tool, the traction force testing tool comprises a fixing base, a pull rope, a middle connecting device, a tension meter and a vehicle connecting device which are sequentially connected, and the fixing base is used for being fixed to a designated position; the vehicle connecting device is used for being connected with engineering machinery. When a traction force test is carried out on the engineering machinery, the engineering machinery can apply a pulling force to the tension meter so as to measure the traction force of the engineering machinery through the tension meter. The engineering machinery traction force testing device improves the convenience of traction force testing, and reduces the risk of safety accidents in the testing process.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery traction force testing, and in particular to an engineering machinery traction force testing device and method. Background Art

[0002] A rotary drilling rig is a common type of construction machinery. Before leaving the factory, it is usually subjected to a traction test to determine its maximum traction force.

[0003] like Figure 1 As shown, currently, when conducting traction force tests on rotary drilling rigs, a two-vehicle pulling method is generally adopted. The specific steps are generally as follows: the fixed vehicle and the test vehicle (i.e., the rotary drilling rig under test) are driven to an open horizontal ground so that the centers of the two vehicles are on the same horizontal line; then, one end of the dynamometer is connected to the fixed vehicle through a steel wire rope, and the other end of the dynamometer is connected to the test vehicle through a steel wire rope; the test vehicle is started, the engine power of the test vehicle is adjusted to the maximum, and the traction rod of the test vehicle (i.e., the travel control rod of the test vehicle) is pushed to make the test vehicle apply tension to the dynamometer, thereby measuring the maximum traction force of the test vehicle through the dynamometer.

[0004] However, this method requires a fixed vehicle for testing and has certain physical requirements (such as weight). Suitable fixed vehicles are often unavailable at test sites, impacting the convenience and efficiency of testing. Furthermore, since the fixed vehicle is simply parked on the ground and not fully secured, if the momentary traction force generated by the test vehicle during testing is excessive, it could cause the fixed vehicle to tip over, resulting in a safety accident. Summary of the Invention

[0005] The purpose of the present invention is to provide a traction force testing device and method for engineering machinery, aiming to solve or at least partially solve the deficiencies of the above-mentioned background technology. The traction force testing device for engineering machinery improves the convenience of traction force testing and reduces the risk of safety accidents during the testing process.

[0006] The present invention provides a traction force testing device for engineering machinery, comprising a traction force testing tool, wherein the traction force testing tool comprises a fixing seat, a pull rope, an intermediate connecting device, a dynamometer and a vehicle connecting device connected in sequence, wherein the fixing seat is used to be fixed at a specified position, and the vehicle connecting device is used to be connected to the engineering machinery; when the traction force test is performed on the engineering machinery, the engineering machinery can apply a pulling force to the dynamometer to measure the traction force of the engineering machinery through the dynamometer.

[0007] Furthermore, two ends of the pull rope are respectively hinged to the fixing seat and the intermediate connecting device, and two ends of the dynamometer are respectively hinged to the intermediate connecting device and the vehicle connecting device.

[0008] Furthermore, the intermediate connecting device includes a first connecting seat, a second connecting seat and an adjusting member, the first connecting seat is connected to the pull rope, and the second connecting seat is connected to the dynamometer; the first connecting seat and the second connecting seat are spaced apart, the adjusting member is connected between the first connecting seat and the second connecting seat, and the distance between the first connecting seat and the second connecting seat can be adjusted by the adjusting member.

[0009] Furthermore, the adjusting member includes a sleeve and a screw, the sleeve is provided with a threaded hole, and the screw is threadedly connected to the inner wall of the threaded hole; the sleeve is fixedly arranged on one of the first connecting seat and the second connecting seat, and the screw is movably connected to the other one of the first connecting seat and the second connecting seat.

[0010] Furthermore, there are multiple first connecting seats, multiple adjusting members and multiple pull ropes, and the multiple pull ropes are respectively connected to the multiple first connecting seats in a one-to-one correspondence. The multiple first connecting seats are respectively connected to the second connecting seats through the multiple adjusting members, and each adjusting member can respectively adjust the distance between the corresponding first connecting seat and the second connecting seat.

[0011] Furthermore, there are multiple pull ropes, and the multiple pull ropes are arranged in parallel and at intervals; the traction force testing tool also includes a fixing part, which is respectively connected to the multiple pull ropes, and the fixing part is used to keep the multiple pull ropes in a spaced arrangement state.

[0012] Furthermore, the vehicle connection device includes a third connection seat and a connection buckle, the third connection seat is connected to the dynamometer, and the connection buckle is movably connected to the third connection seat; the connection buckle is used to connect to the engineering machinery.

[0013] Furthermore, both the intermediate connecting device and the vehicle connecting device are provided with a hoisting structure.

[0014] Furthermore, the engineering machinery traction test device also includes an anti-skid device, which includes a base plate and an anti-skid structure arranged on the upper surface of the base plate; the base plate is used to support the engineering machinery, and the anti-skid structure is used to prevent the engineering machinery from slipping during the traction test.

[0015] The present invention further provides a method for testing the traction force of an engineering machinery based on the above-mentioned traction force testing device for engineering machinery, the method comprising:

[0016] Fix the fixing seat at the designated position and connect the vehicle connection device to the construction machinery;

[0017] The pulling rope is pulled by the engineering machinery to a straight state; the engine power of the engineering machinery is adjusted to the maximum, and the maximum traction force of the engineering machinery is measured by a dynamometer.

[0018] The engineering machinery traction force testing device provided by the present invention allows for testing the traction force of the engineering machinery by simply connecting the vehicle connection device to the machinery. This not only improves the convenience of traction force testing but also reduces the risk of safety accidents during testing compared to the method of pulling two vehicles against each other. Furthermore, the engineering machinery traction force testing device is highly versatile and can be applied to traction force testing of various types of engineering machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the traction force testing method of a rotary drilling rig in the prior art.

[0020] Figure 2 This is a front view of the traction force testing tool in an embodiment of the present invention.

[0021] Figure 3 Schematic diagram of the three-dimensional structure of the traction force testing tool in an embodiment of the present invention.

[0022] Figure 4 Schematic diagram of the structure of the fixing seat in an embodiment of the present invention.

[0023] Figure 5 Schematic diagram of the structure of the intermediate connecting device in an embodiment of the present invention.

[0024] Figure 6 for Figure 5 Schematic diagram of the explosion structure.

[0025] Figure 7 Schematic diagram of the structure of the fixing member in an embodiment of the present invention.

[0026] Figure 8 Schematic diagram of the structure of the dynamometer in an embodiment of the present invention.

[0027] Figure 9 Schematic diagram of the structure of a vehicle connection device in an embodiment of the present invention.

[0028] Figure 10 Schematic diagram of the structure of the anti-slip device in an embodiment of the present invention.

[0029] Figure 11 It is a schematic diagram of the local structure of the engineering machinery in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0031] The terms "first," "second," "third," "fourth," and the like (if any) in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a particular sequential order or sequence.

[0032] The directional terms "up," "down," "left," "right," "front," "back," "top," and "bottom" (if any) used in the specification and claims of the present invention are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, and are intended only for clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this application.

[0033] like Figures 2 to 9 and Figure 11 As shown, an embodiment of the present invention provides a construction machinery traction force testing device for testing the traction force of construction machinery 8; wherein the construction machinery 8 can be a rotary drilling rig, an excavator, a crane, or other working vehicles that require traction force testing.

[0034] The construction machinery traction force testing device includes a traction force testing fixture A, which comprises a fixed base 1, a pull rope 2, an intermediate connecting device 3, a dynamometer 4, and a vehicle connection device 5, which are connected in sequence. The pull rope 2 is typically a steel wire rope (although it can also be other ropes capable of bearing high loads). The dynamometer 4 is used to measure tension. The fixed base 1 is fixed at a designated location (typically on an open surface outdoors, with the fixed base 1 fixedly connected to the foundation). The vehicle connection device 5 is used to connect to the construction machinery 8. During a traction force test on the construction machinery 8, the construction machinery 8 can apply tension to the dynamometer 4 via the vehicle connection device 5, thereby measuring the traction force of the construction machinery 8 (typically, testing the maximum traction force of the construction machinery 8).

[0035] The engineering machinery traction test device provided by the embodiments of the present invention allows for traction testing of engineering machinery 8 by simply connecting the vehicle connection device 5 to the engineering machinery 8. This not only improves the convenience of traction testing but also reduces the risk of safety accidents during testing compared to a two-vehicle pulling method. Furthermore, the engineering machinery traction test device is highly versatile and can be applied to traction tests of various types of engineering machinery. (As long as the structural strength of the traction test fixture A and the connection strength of the fixing base 1 to the foundation are ensured, the engineering machinery traction test device can be applied to traction tests of nearly all types of engineering machinery.)

[0036] Further, if Figure 2 and Figure 3 As shown, in this embodiment, the two ends of the pull rope 2 are respectively hinged to the fixing seat 1 and the intermediate connecting device 3, the two ends of the dynamometer 4 are respectively hinged to the intermediate connecting device 3 and the vehicle connecting device 5, and the vehicle connecting device 5 is hinged to the engineering machinery 8, so that the traction force test tool A forms a multi-point hinged structure; during the test, the traction force test tool A can adaptively adjust the state of its various parts under the traction of the engineering machinery 8, so that the traction force test tool A is suspended in the air and stretched straight (as shown in FIG. Figure 2 As shown, during the test, the pull rope 2, the intermediate connecting device 3, the dynamometer 4 and the vehicle connecting device 5 in the traction test tool A are generally in a horizontal suspended state) to adapt to various test conditions and to improve the service life of the traction test tool A.

[0037] Further, if Figure 2 and Figure 3 As shown in FIG. 1 , in this embodiment, the intermediate connection device 3 and the tension meter 4 are detachably connected, so that after the test is completed, the tension meter 4 can be detached from the intermediate connection device 3. Figure 3 、 Figure 5 、 Figure 8 and Figure 9 As shown, in this embodiment, the two ends of the dynamometer 4 are hinged to the intermediate connecting device 3 and the vehicle connecting device 5 through the first mounting pin 324 and the second pin shaft 53 respectively. The two ends of the dynamometer 4 are respectively provided with a first hinge hole 41 and a first hinge hole 42, and the first mounting pin 324 and the second pin shaft 53 pass through the first hinge hole 41 and the first hinge hole 42 respectively; the first mounting pin 324 can be removed from the intermediate connecting device 3 and the dynamometer 4, and the second pin shaft 53 can be removed from the vehicle connecting device 5 and the dynamometer 4.

[0038] Specifically, in this embodiment, the fixing base 1 is generally fixed to an outdoor foundation. After the test, the fixing base 1, the pull rope 2, and the intermediate connecting device 3 are generally not disassembled and are placed outdoors. However, since the dynamometer 4 is an electrical device, it is necessary to disassemble the dynamometer 4 from the intermediate connecting device 3 after the test. The dynamometer 4 and the vehicle connecting device 5 are then moved indoors for storage (with or without disassembly) to avoid damage to the dynamometer 4. During the test, the dynamometer 4 only needs to be reconnected to the intermediate connecting device 3.

[0039] Further, if Figure 2 and Figure 3As shown, in this embodiment, there are multiple pull ropes 2, and multiple pull ropes 2 are arranged in parallel and at intervals (in this embodiment, 5 pull ropes 2 are connected in parallel), and the two ends of each pull rope 2 are respectively connected to the fixing seat 1 and the intermediate connecting device 3; by arranging multiple pull ropes 2, the carrying capacity of each pull rope 2 can be improved, and the uniformity of the tension on each part of the intermediate connecting device 3 can be ensured, so that the intermediate connecting device 3 remains stable.

[0040] Further, if Figure 2 、 Figure 3 and Figure 7 As shown, in this embodiment, the traction force testing tool A further includes a fixing member 6, which is connected to each of the plurality of pull cords 2. The fixing member 6 is used to maintain the plurality of pull cords 2 in an interval-like arrangement, thereby preventing the plurality of pull cords 2 from becoming tangled. In this embodiment, there are multiple fixing members 6, which are spaced apart along the length of the pull cords 2 and are connected to different positions on each pull cord 2.

[0041] Specifically, in this embodiment, each fixing member 6 comprises two upper and lower fixing bars 61 connected by bolts. The two fixing bars 61 are provided with a plurality of spaced apart limiting holes 62, each corresponding one-to-one with each of the plurality of draw cords 2. During installation, the two fixing bars 61 are simply placed on the upper and lower sides of the plurality of draw cords 2, with the draw cords 2 positioned within the limiting holes 62. The fixing member 6 is then secured to the draw cords 2 by bolts.

[0042] Further, if Figures 2 to 4As shown, in this embodiment, the fixing base 1 includes a base plate 11 and multiple vertical plates 12 arranged on the base plate 11, connecting ribs 13, and side reinforcing ribs 14. The multiple vertical plates 12 are arranged at intervals, and each vertical plate 12 is fixedly connected to the base plate 11 (specifically, by welding). The connecting ribs 13 are arranged between adjacent vertical plates 12 and are fixedly connected to the base plate 11 and the adjacent vertical plates 12 (specifically, by welding). The side reinforcing ribs 14 are fixedly connected to the base plate 11 and the outermost vertical plates 12 (specifically, by welding). The fixing base 1 is provided with a first pin 15, which passes through multiple vertical plates 12 at the same time. Multiple pull ropes 2 are respectively connected to different parts of the first pin 15, and the multiple pull ropes 2 are respectively located between adjacent vertical plates 12 to distribute the force. The first pin 15 is detachably connected to the fixing base 1 (multiple vertical plates 12), thereby facilitating the replacement of the first pin 15. The base plate 11 is provided with a plurality of spaced-apart mounting holes 111 for use with studs (not shown) secured to the foundation. When installing the fixing base 1, the mounting holes 111 are aligned with the studs on the foundation, the studs are passed through the mounting holes 111, and then the studs are tightened with nuts, thereby securing the fixing base 1 to the foundation. Of course, in other embodiments, the fixing base 1 may also have other structures.

[0043] Further, if Figure 3 、 Figure 5 and Figure 6 As shown, in this embodiment, the intermediate connecting device 3 includes a first connecting seat 31, a second connecting seat 32 and an adjusting member 33. The first connecting seat 31 is connected to the pull rope 2, and the second connecting seat 32 is connected to the dynamometer 4; the first connecting seat 31 and the second connecting seat 32 are arranged at intervals, and the adjusting member 33 is connected between the first connecting seat 31 and the second connecting seat 32, and the distance between the first connecting seat 31 and the second connecting seat 32 can be adjusted by the adjusting member 33.

[0044] In this embodiment, there are multiple first connecting seats 31 and multiple adjusting members 33, and the multiple first connecting seats 31 are separated from each other (the multiple first connecting seats 31 are spaced apart). The multiple pull ropes 2 are respectively connected to the multiple first connecting seats 31 one by one, and the multiple adjusting members 33 are respectively connected to the multiple first connecting seats 31 one by one. The multiple first connecting seats 31 are respectively connected to the second connecting seats 32 through the multiple adjusting members 33, and each adjusting member 33 can respectively adjust the distance between the corresponding first connecting seat 31 and the second connecting seat 32.

[0045] Specifically, during the test, after the vehicle connection device 5 is connected to the engineering machinery 8 and the engineering machinery 8 pulls and straightens the traction test tool A, the force states of each pull rope 2 may be inconsistent (for example, some pull ropes 2 are not straightened, so that the pull rope 2 is under less force or is not under any force). By adjusting each adjustment member 33, each pull rope 2 is in a straightened state and the force state of each pull rope 2 remains consistent, thereby improving the force uniformity and stability of each pull rope 2 and the intermediate connection device 3, and ensuring that the traction test tool A has a higher redundant tensile performance (that is, the maximum traction tension that the traction test tool A can withstand is much greater than the tension actually applied to it by the engineering machinery 8), which is beneficial to improving the service life of the traction test tool A.

[0046] Further, if Figure 3 、 Figure 5 and Figure 6 As shown, in this embodiment, the second connecting base 32 includes a first sub-mount 321, a second sub-mount 322, and a connecting shaft 323. The first sub-mount 321 and the second sub-mount 322 are spaced apart. The connecting shaft 323 is fixedly connected to both the first sub-mount 321 and the second sub-mount 322. The adjusting member 33 is connected between the first connecting base 31 and the connecting shaft 323. One end of the tension gauge 4 is located between the first sub-mount 321 and the second sub-mount 322. The tension gauge 4 is hingedly connected to the first and second sub-mounts 321 and 322 via a first mounting shaft 324. The first connecting base 31 is provided with a second mounting shaft 311, through which the pull rope 2 is hingedly connected to the first connecting base 31.

[0047] Further, if Figure 3 、 Figure 5 and Figure 6 As shown, in this embodiment, each adjusting member 33 includes a sleeve 331 and a screw 332. The sleeve 331 is provided with a threaded hole 3310, and the screw 332 is threadedly connected to the inner wall of the threaded hole 3310. Specifically, the outer wall of the screw 332 is provided with an external thread, and the inner wall of the threaded hole 3310 is provided with an internal thread. The external thread on the screw 332 is threadedly connected to the internal thread on the inner wall of the threaded hole 3310. The sleeve 331 is fixedly mounted on one of the first connecting seat 31 and the second connecting seat 32, and the screw 332 is movably connected to the other of the first connecting seat 31 and the second connecting seat 32. By adjusting the screw insertion length of the screw 332 relative to the sleeve 331 (i.e., the length of the screw 332 extending into the sleeve 331), the spacing between the corresponding first connecting seat 31 and the second connecting seat 32 can be adjusted.

[0048] Specifically, in this embodiment, the sleeve 331 is fixedly mounted on the first connecting seat 31 (specifically, by welding), and the screw 332 is rotatably connected to the second connecting seat 32. Specifically, a through-hole 3231 is provided on the connecting shaft 323. One end of the screw 332 is threadedly engaged with the sleeve 331, and the other end of the screw 332 is inserted into the through-hole 3231, allowing the screw 332 to rotate within the through-hole 3231. Furthermore, the screw 332 is provided with a stop nut 333, which is located on both sides of the connecting shaft 323. The stop nut 333 serves to limit the screw 332 and prevent it from separating from the connecting shaft 323. The screw 332 is cylindrical and has a planar screwing platform 3321. This screwing platform 3321 facilitates the operator to tighten the screw 332 using a tool such as a wrench. When the screw 332 is rotated in a certain direction, the screw 332 is screwed inward relative to the sleeve 331 for an increased length (i.e., the length of the screw 332 inserted into the sleeve 331 increases), and the distance between the corresponding first connecting seat 31 and the second connecting seat 32 is shortened, thereby tightening the corresponding pull cord 2. When the screw 332 is rotated in the opposite direction, the screw 332 is screwed inward relative to the sleeve 331 for a decreased length (i.e., the length of the screw 332 inserted into the sleeve 331 decreases), and the distance between the corresponding first connecting seat 31 and the second connecting seat 32 is increased, thereby loosening the corresponding pull cord 2. Of course, in other embodiments, the adjustment member 33 may also have other structural forms.

[0049] Further, if Figure 3 、 Figure 9 and Figure 11 As shown, in this embodiment, the vehicle connection device 5 includes a third connection seat 51 and a connection buckle 52. The third connection seat 51 is connected to the dynamometer 4, and the connection buckle 52 is movably connected to the third connection seat 51; the connection buckle 52 is used to connect to the engineering machinery 8.

[0050] Specifically, in this embodiment, the third connecting base 51 includes two spaced-apart connecting plates 511, one end of which is provided with a second pin 53. One end of the dynamometer 4 is located between the two connecting plates 511, and the third connecting base 51 is hingedly connected to the dynamometer 4 via the second pin 53. The other ends of the two connecting plates 511 are provided with a third pin 54. The connecting buckle 52 is a U-shaped structure, which is sleeved on the third pin 54 and hingedly connected to the third connecting base 51 via the third pin 54. The engineering machine 8 is provided with a connecting hole 81 (specifically, the connecting hole 81 is provided on the lower frame of the engineering machine 8), and the connecting buckle 52 is hingedly connected to the connecting hole 81 of the engineering machine 8 via a fourth pin 55.

[0051] Further, if Figure 3 、 Figure 5 and Figure 9As shown, in this embodiment, a lifting structure 50 is provided on both the intermediate connecting device 3 and the vehicle connecting device 5 (specifically, the lifting structure 50 on the intermediate connecting device 3 is arranged on the second connecting seat 32). The lifting structure 50 can specifically be a lifting ring, a lifting hook or other structures. The lifting structure 50 is used for lifting equipment (not shown) to lift the intermediate connecting device 3 and the vehicle connecting device 5.

[0052] Specifically, the purpose of providing the hoisting structure 50 is as follows: 1. Because the intermediate connecting device 3 and the vehicle connecting device 5 are heavy, the vehicle connecting device 5 needs to be moved indoors after the test and moved outdoors during the test. Therefore, the vehicle connecting device 5 needs to be lifted and moved by a lifting device through the lifting structure 50. At the same time, although the fixing base 1 is fixed to the outdoor foundation, the pull rope 2 has a certain length. Therefore, after the test, the intermediate connecting device 3 can be lifted and moved to an outdoor awning or other location for storage by a lifting device through the lifting structure 50 to extend its service life. 2. Before the test begins, the dynamometer 4 needs to be connected to the intermediate connecting device 3 and the vehicle connecting device 5. During the connection process, the intermediate connecting device 3 and the vehicle connecting device 5 need to be lifted by the lifting device, and then the distance and orientation between the intermediate connecting device 3 and the vehicle connecting device 5 need to be adjusted so that the distance between the intermediate connecting device 3 and the vehicle connecting device 5 is just aligned with the mounting hole on the dynamometer 4. The dynamometer 4 is then connected to the intermediate connecting device 3 and the vehicle connecting device 5 respectively by the first mounting pin 324 and the second pin shaft 53.

[0053] Further, if Figure 10 As shown, in this embodiment, the engineering machinery traction test device also includes an anti-skid device B, which includes a base plate 7 and an anti-skid structure 71 arranged on the upper surface of the base plate 7; the base plate 7 is fixedly set on the ground, and the base plate 7 is used to support the engineering machinery 8, and the anti-skid structure 71 is used to prevent the engineering machinery 8 from slipping during the traction test.

[0054] Specifically, during current testing, due to the lack of anti-skid measures on the ground, construction machinery 8 is prone to slipping during the test, affecting the accuracy of the traction test results. This embodiment employs an anti-skid device B. During testing, construction machinery 8 is first driven onto base plate 7. Due to the anti-skid structure 71 provided on base plate 7, construction machinery 8 is less likely to slip during the test, thereby improving the accuracy of the traction test results. Base plate 7 is typically made of steel and is typically secured to the ground using fasteners (not shown; fasteners such as studs can be secured to the ground in a manner similar to that used to secure base 1 to the foundation). However, if the friction between base plate 7 and the ground is sufficiently high, base plate 7 can also be placed directly on the ground. The anti-skid structure 71 comprises a plurality of raised portions protruding from the upper surface of base plate 7. The raised portions are spaced apart and can be made of materials such as high-strength steel. The raised portions are secured to base plate 7 by welding. Of course, in other embodiments, the anti-skid device B can also have other structural forms.

[0055] An embodiment of the present invention further provides a method for testing the traction force of an engineering machinery based on the above-mentioned engineering machinery traction force testing device. The method for testing the traction force of an engineering machinery includes:

[0056] Fix the fixing base 1 at the designated position and connect the vehicle connecting device 5 to the construction machinery 8;

[0057] The pull rope 2 is pulled to a straight state by the engineering machinery 8 (at this time, the pull rope 2, the intermediate connecting device 3, the dynamometer 4 and the vehicle connecting device 5 are all in a suspended state); the engine power of the engineering machinery 8 is adjusted to the maximum (there is no need to distinguish the order of adjusting the engine power of the engineering machinery 8 to the maximum and pulling the pull rope 2 to a straight state by the engineering machinery 8), and the maximum traction force of the engineering machinery 8 is measured by the dynamometer 4; that is, at this time, the engineering machinery 8 applies a pulling force to the dynamometer 4 through the vehicle connecting device 5, and then the maximum traction force of the engineering machinery 8 is measured by the dynamometer 4.

[0058] In this embodiment, the method for using the engineering machinery traction force testing device may be:

[0059] 1. The fixing base 1, the pull rope 2 and the intermediate connecting device 3 are usually not disassembled and placed outdoors.

[0060] When performing the traction test, the construction machine 8 is driven onto the base plate 7 so that the construction machine 8 and the fixing base 1 are kept on the same center line;

[0061] Connect the two ends of the dynamometer 4 to the intermediate connection device 3 and the vehicle connection device 5 through the first mounting pin 324 and the second pin shaft 53 respectively;

[0062] The connecting buckle 52 of the vehicle connecting device 5 is connected to the connecting hole 81 on the engineering machine 8 through the fourth pin 55 .

[0063] 2. During the test, adjust the engine power of the construction machine 8 to maximum, push the traction lever of the construction machine 8 (i.e., the travel control lever of the construction machine 8), and pull the traction test tool A of the construction machine 8 to a horizontal state (at this time, the dynamometer 4 is suspended in the air). Check whether the data acquisition system (not shown in the figure, the data acquisition system is connected to the dynamometer 4 and is used to collect the tension value measured by the dynamometer 4) reads normally;

[0064] Continue to push the traction rod for more than 5 seconds, release the traction rod, and record the maximum traction force reading f1;

[0065] Repeat the above steps twice and read the maximum traction force readings f2 and f3;

[0066] According to the average traction force formula f=(f1+f2+f3) / 3, the maximum traction force f of the engineering machinery 8 is obtained.

[0067] The advantages of the engineering machinery traction force testing device provided by the embodiment of the present invention include:

[0068] (1) By connecting the fixing base 1 to the foundation, the device is stable and reliable. By connecting multiple pull ropes 2 in parallel and adjusting the force of each pull rope 2 through the adjusting member 33, each pull rope 2 is stressed simultaneously, ensuring that the traction test fixture A has high redundant tensile performance, which is conducive to improving the service life of the traction test fixture A. Compared with the method of pulling two vehicles against each other, the engineering machinery traction test device is safer and greatly reduces the risk of safety accidents during the test.

[0069] (2) The engineering machinery traction force testing device is easy to use. During the test, the traction force test of the engineering machinery 8 can be performed by simply connecting the vehicle connection device 5 to the engineering machinery 8, thereby improving the convenience of the traction force test.

[0070] (3) By providing the anti-skid device B, the engineering machine 8 can be prevented from slipping during the test, thereby improving the accuracy of the traction test results.

[0071] (4) The engineering machinery traction force testing device has good versatility and can be applied to traction force testing of various types of engineering machinery.

[0072] (5) The structural strength of the engineering machinery traction test device is high. On the basis of ensuring the structural strength of the traction test tool A and the connection strength between the fixed seat 1 and the foundation, the maximum pulling force that the traction test tool A can withstand exceeds 240t. Under the traction condition of the maximum configuration of the rotary drilling rig, the safety factor exceeds 3.0.

[0073] (6) The various parts of the traction test fixture A are connected by pins, bolts, etc. to facilitate the disassembly and replacement of components.

[0074] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A traction force testing device for engineering machinery, characterized in that: The invention comprises a traction force testing tool (A), wherein the traction force testing tool (A) comprises a fixing seat (1), a pulling rope (2), an intermediate connecting device (3), a dynamometer (4) and a vehicle connecting device (5) connected in sequence, wherein the fixing seat (1) is used to be fixed at a specified position, and the vehicle connecting device (5) is used to be connected to an engineering machine (8); when the traction force of the engineering machine (8) is tested, the engineering machine (8) can apply a pulling force to the dynamometer (4), so as to measure the traction force of the engineering machine (8) through the dynamometer (4).

2. The engineering machinery traction force testing device according to claim 1, characterized in that: The two ends of the pull rope (2) are respectively hinged to the fixing seat (1) and the intermediate connecting device (3), and the two ends of the dynamometer (4) are respectively hinged to the intermediate connecting device (3) and the vehicle connecting device (5).

3. The engineering machinery traction force testing device according to claim 1, characterized in that: The intermediate connecting device (3) comprises a first connecting seat (31), a second connecting seat (32) and an adjusting member (33); the first connecting seat (31) is connected to the pull rope (2), and the second connecting seat (32) is connected to the dynamometer (4); the first connecting seat (31) and the second connecting seat (32) are arranged at intervals, the adjusting member (33) is connected between the first connecting seat (31) and the second connecting seat (32), and the distance between the first connecting seat (31) and the second connecting seat (32) can be adjusted by the adjusting member (33).

4. The engineering machinery traction force testing device according to claim 3, characterized in that: The adjusting member (33) comprises a sleeve (331) and a screw (332); the sleeve (331) is provided with a threaded hole (3310), and the screw (332) is threadedly connected to the inner wall of the threaded hole (3310); the sleeve (331) is fixedly arranged on one of the first connecting seat (31) and the second connecting seat (32), and the screw (332) is movably connected to the other of the first connecting seat (31) and the second connecting seat (32).

5. The engineering machinery traction force testing device according to claim 3, characterized in that: The number of the first connecting seat (31), the adjusting member (33) and the pull rope (2) are all multiple, and the multiple pull ropes (2) are respectively connected to the multiple first connecting seats (31) in a one-to-one correspondence, and the multiple first connecting seats (31) are respectively connected to the second connecting seat (32) through the multiple adjusting members (33), and each adjusting member (33) can respectively adjust the distance between the corresponding first connecting seat (31) and the second connecting seat (32).

6. The engineering machinery traction force testing device according to claim 1, characterized in that: The number of the pull ropes (2) is multiple, and the multiple pull ropes (2) are arranged in parallel and at intervals; the traction force testing tool (A) also includes a fixing part (6), and the fixing part (6) is respectively connected to the multiple pull ropes (2), and the fixing part (6) is used to keep the multiple pull ropes (2) in a state of being arranged at intervals.

7. The engineering machinery traction force testing device according to claim 1, characterized in that: The vehicle connection device (5) comprises a third connection seat (51) and a connection buckle (52); the third connection seat (51) is connected to the dynamometer (4); the connection buckle (52) is movably connected to the third connection seat (51); and the connection buckle (52) is used to connect to the engineering machinery (8).

8. The engineering machinery traction force testing device according to claim 1, characterized in that: The intermediate connection device (3) and the vehicle connection device (5) are both provided with a hoisting structure (50).

9. The engineering machinery traction force testing device according to any one of claims 1 to 8, characterized in that: The engineering machinery traction force testing device further comprises an anti-skid device (B), wherein the anti-skid device (B) comprises a base plate (7) and an anti-skid structure (71) arranged on the upper surface of the base plate (7); the base plate (7) is used to support the engineering machinery (8), and the anti-skid structure (71) is used to prevent the engineering machinery (8) from slipping during the traction force testing process.

10. A method for testing the traction force of an engineering machinery based on the traction force testing device for engineering machinery according to any one of claims 1 to 9, characterized in that: The engineering machinery traction force testing method comprises: The fixing seat (1) is fixed at a designated position, and the vehicle connecting device (5) is connected to the engineering machinery (8); The pull rope (2) is pulled by the engineering machinery (8) to a stretched state; the engine power of the engineering machinery (8) is adjusted to the maximum, and the maximum traction force of the engineering machinery (8) is measured by a dynamometer (4).

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