Test instrument transfer trolley

Abstract

The utility model provides a kind of test instrument transfer trolley, including including car body, the first roller of being arranged in one end of car body, the support component of being arranged in one side of car body and the movable wheel component of being arranged in the opposite side of car body, the first roller is rotatably connected with car body;Support component is fixedly arranged on one end of car body close to the first roller;Movable wheel component includes hinge assembly and second roller, hinge assembly is hinged with car body, second roller is rotatably connected with hinge assembly, car body is supported by first roller and second roller jointly;When hinge assembly rotates relative to car body, movable wheel component has multiple different support states, so that car body presents different postures.The test instrument transfer trolley can conveniently transfer test instrument, and the alignment installation of test instrument and test vehicle is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary testing tooling technology for engineering machinery, and in particular to a test instrument transport trolley. Background Technology

[0002] Rotary drilling rigs are a common type of construction machinery. Before leaving the factory, rotary drilling rigs generally undergo a traction test to determine their maximum traction force.

[0003] Currently, when conducting traction force tests on rotary drilling rigs, the tension sensor is typically adjusted to a vertical position. The upper end of the tension sensor is connected to the test vehicle (i.e., the rotary drilling rig under test) via a pin, and the lower end of the tension sensor is connected to a ground anchor fixed to the ground via a pin. Then, the engine power of the test vehicle is adjusted to the maximum, so that the test vehicle applies a pulling force to the tension sensor, thereby measuring the maximum traction force of the test vehicle through the tension sensor.

[0004] Tension sensors are fragile components, typically stored indoors when not in use. They are transported to the outdoor testing area using a trolley when needed, and then transported back indoors using the same trolley after use. Due to the weight of the tension sensors and the fact that current trolleys generally cannot adjust their body posture, transporting tension sensors using a trolley is inconvenient. Furthermore, installing the tension sensor requires alignment with the test vehicle, necessitating adjustment of the sensor's posture, which existing trolleys cannot achieve. Utility Model Content

[0005] The purpose of this utility model is to provide a test instrument transport trolley, which facilitates the transport of test instruments and makes it easy to align and install the test instruments with the test vehicle.

[0006] This utility model provides a test instrument transport trolley, including a vehicle body, a first roller disposed at one end of the vehicle body, a support assembly disposed on one side of the vehicle body, and a movable wheel assembly disposed on the opposite side of the vehicle body. The first roller is rotatably connected to the vehicle body. The support assembly is fixedly disposed on the vehicle body at one end near the first roller, and the support assembly is used to support the test instrument. The movable wheel assembly includes a hinge assembly and a second roller. The hinge assembly is hinged to the vehicle body, and the second roller is rotatably connected to the hinge assembly. The vehicle body is supported by the first roller and the second roller. When the hinge assembly rotates relative to the vehicle body, the movable wheel assembly has multiple different support states, thereby allowing the vehicle body to assume different postures.

[0007] Furthermore, the movable wheel assembly has a first support state, a second support state, and a third support state; When the movable wheel assembly is in the first supported state, the second roller is located at the end of the vehicle body away from the first roller, and the vehicle body is in a flat position. When the movable wheel assembly is in the second support state, the second roller is located between the two opposite ends of the vehicle body, and the vehicle body is tilted. When the movable wheel assembly is in the third support state, the second roller is located at the end of the vehicle body close to the first roller, and the vehicle body is in a standing posture.

[0008] Furthermore, the hinge assembly includes a pull rod and a support rod. The first end of the support rod is hinged to the vehicle body, and the second roller is rotatably connected to the second end of the support rod. The first end of the pull rod is hinged to the support rod, and the second end of the pull rod can be connected to different parts of the vehicle body to allow the movable wheel assembly to be in different support states.

[0009] Furthermore, the movable wheel assembly also includes a locking mechanism, which is connected to the pull rod and the vehicle body respectively. The locking mechanism is used to lock the pull rod and the vehicle body so that the movable wheel assembly is kept in the required support state.

[0010] Furthermore, the locking mechanism includes a locking pin, a first locking hole, and a plurality of second locking holes, wherein the first locking hole is disposed at the second end of the pull rod, and the plurality of second locking holes are spaced apart on the vehicle body; When the hinge assembly rotates relative to the vehicle body, the first locking hole on the pull rod can correspond to a plurality of second locking holes on the vehicle body, and the locking pin can be simultaneously inserted into the first locking hole and the corresponding second locking hole to lock the pull rod and the vehicle body.

[0011] Furthermore, the plurality of second locking holes include a first sub-locking hole, a second sub-locking hole, and a third sub-locking hole; the movable wheel assembly has a first support state, a second support state, and a third support state; When the locking pin is simultaneously inserted into the first lock hole and the first sub-lock hole, the movable wheel assembly remains in the first support state; When the locking pin is simultaneously inserted into the first lock hole and the second sub-lock hole, the movable wheel assembly remains in the second support state; When the locking pin is simultaneously inserted into the first lock hole and the third sub-lock hole, the movable wheel assembly remains in the third support state.

[0012] Furthermore, the pull rod is an arc-shaped rod that bends toward the side away from the vehicle body.

[0013] Furthermore, it also includes a limiting component, which is disposed on the vehicle body and the supporting component is located on the same side of the vehicle body; the limiting component is used to limit the testing instrument to the vehicle body.

[0014] Furthermore, the support assembly is provided with rotatable pulleys, which are used to support the testing instrument; the testing instrument can slide to the outside of the testing instrument transfer trolley via the pulleys.

[0015] Furthermore, a handle is provided on the end of the vehicle body away from the first roller.

[0016] The test instrument transport trolley provided by this utility model is equipped with a first roller and a movable wheel assembly. The movable wheel assembly includes a hinge assembly and a second roller. By rotating the hinge assembly relative to the vehicle body, the movable wheel assembly can have multiple different support states, thereby allowing the vehicle body to assume different postures and realize the transformation of the vehicle body posture. This not only facilitates the transport and storage of test instruments, but also enables the adjustment of the posture of the test instruments during installation, thus facilitating the alignment and installation of the test instruments with the test vehicle. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the test instrument transport trolley in an embodiment of this utility model.

[0018] Figure 2 for Figure 1 Rear view.

[0019] Figure 3 for Figure 1 The front view.

[0020] Figure 4 This is a schematic diagram of the structure of the test instrument placed on the test instrument transport trolley in an embodiment of this utility model.

[0021] Figure 5 for Figure 4 Side view of the test instrument transport trolley in a lying position.

[0022] Figure 6 for Figure 4 Side view of the test instrument transport trolley when it is tilted.

[0023] Figure 7 for Figure 4 Side view of the test instrument transport trolley in a standing position. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0025] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0026] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of 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.

[0027] like Figures 1 to 7 As shown, this embodiment of the utility model provides a test instrument transport trolley for transporting and storing the test instrument 7. Of course, in other embodiments, the test instrument transport trolley may only be used for transporting the test instrument 7 (i.e., the test instrument 7 is not placed on the transport trolley during storage). In this embodiment, the test instrument 7 is a tension sensor, which is generally rectangular in shape. The tension sensor is used for testing the traction force of engineering machinery, such as rotary drilling rigs, excavators, cranes, and other work vehicles that require traction force testing. Of course, in other embodiments, the test instrument 7 may also be other testing devices.

[0028] The test instrument transport trolley includes a body 1, a first roller 2 located at one end of the body 1, a support assembly 3 located on one side of the body 1, and a movable wheel assembly 4 located on the opposite side of the body 1. The first roller 2 is rotatably connected to the body 1. The support assembly 3 is fixedly located on the body 1 near the first roller 2 and is used to support the test instrument 7. A handle 6 is located on the end of the body 1 away from the first roller 2, allowing the operator to push or pull the transport trolley. Specifically, in this embodiment, the first roller 2 is located at the bottom of the body 1, and the handle 6 is located at the top of the body 1; the support assembly 3 is located at the front and bottom of the body 1, and the movable wheel assembly 4 is located at the rear of the body 1.

[0029] The movable wheel assembly 4 includes a hinge assembly 41 and a second roller 42. The hinge assembly 41 is hinged to the vehicle body 1, and the second roller 42 is rotatably connected to the hinge assembly 41. The vehicle body 1 is supported by the first roller 2 and the second roller 42. The movement of the test instrument transport trolley is achieved by the rolling of the first roller 2 and the second roller 42. When the hinge assembly 41 rotates relative to the vehicle body 1, the movable wheel assembly 4 has multiple different support states, thus allowing the vehicle body 1 to assume different postures.

[0030] The test instrument transport trolley provided in this embodiment of the utility model is equipped with a first roller 2 and a movable wheel assembly 4. The movable wheel assembly 4 includes a hinge assembly 41 and a second roller 42. By rotating the hinge assembly 41 relative to the vehicle body 1, the movable wheel assembly 4 can have multiple different support states, thereby allowing the vehicle body 1 to assume different postures and realize the change of posture of the vehicle body 1. This not only facilitates the transport and storage of the test instrument 7, but also enables the adjustment of the posture of the test instrument 7 when installing it, thus facilitating the alignment and installation of the test instrument 7 with the test vehicle.

[0031] Furthermore, such as Figures 5 to 7 As shown, in this embodiment, when the hinge assembly 41 rotates relative to the vehicle body 1, the movable wheel assembly 4 has a first support state, a second support state, and a third support state.

[0032] like Figure 5 As shown, when the movable wheel assembly 4 is in the first supported state, the second roller 42 is located at the end of the vehicle body 1 away from the first roller 2 (i.e., the second roller 42 and the first roller 2 are located at opposite ends of the vehicle body). At this time, the vehicle body 1 is in a flat position, that is, the transfer trolley is in a flat position. In this position, the testing instrument 7 placed on the transfer trolley is also in a flat position. The testing instrument 7 is mainly supported by the vehicle body 1 (i.e., the weight of the testing instrument 7 is mainly directly loaded on the vehicle body 1). In this position, since the transfer trolley and the testing instrument 7 are in a flat position, the center of gravity of the transfer trolley and the testing instrument 7 is relatively stable and will not easily tip over, thus facilitating the stable storage of the testing instrument 7 on the transfer trolley. When the vehicle body 1 is in a flat position, the vehicle body 1 can be completely horizontal or approximately horizontal. The angle between the vehicle body 1 and the horizontal direction can be, for example, 0° to 10°, but is not limited to this.

[0033] like Figure 6As shown, when the movable wheel assembly 4 is in the second support state, the second roller 42 is located between the two opposite ends of the vehicle body 1 (i.e., the second roller 42 is neither close to the top nor the bottom of the vehicle body 1, but between the top and bottom of the vehicle body 1). At this time, the vehicle body 1 is tilted, that is, the transfer trolley is tilted. In this posture, the testing instrument 7 placed on the transfer trolley is also tilted. The testing instrument 7 is supported by the vehicle body 1 and the support assembly 3 (i.e., the weight of the testing instrument 7 is directly loaded on the vehicle body 1 and the support assembly 3). In this posture, because the transfer trolley and the testing instrument 7 are tilted, it is convenient for the operator to push the transfer trolley with the handle 6 to move the testing instrument 7. When the vehicle body 1 is tilted, the angle between the vehicle body 1 and the horizontal direction can be, for example, 40°~70°, but is not limited to this.

[0034] like Figure 7 As shown, when the movable wheel assembly 4 is in the third support state, the second roller 42 is located at the end of the vehicle body 1 closest to the first roller 2 (i.e., the second roller 42 is also located at the bottom of the vehicle body 1). At this time, the vehicle body 1 is in a standing posture, that is, the transfer trolley is in a standing posture. In this posture, the testing instrument 7 placed on the transfer trolley is also in a standing posture. The testing instrument 7 is mainly supported by the support assembly 3 (i.e., the weight of the testing instrument 7 is mainly directly loaded on the support assembly 3). In this posture, since the transfer trolley and the testing instrument 7 are in a standing posture, it is convenient for the operator to move the testing instrument 7 out of the transfer trolley, and it is also convenient for the testing instrument 7 to be aligned and installed with the testing vehicle. When the vehicle body 1 is in a standing posture, the vehicle body 1 can be completely vertical or approximately vertical. The angle between the vehicle body 1 and the vertical direction can be, for example, 0° to 10°, but is not limited to this.

[0035] Furthermore, such as Figures 1 to 3 As shown, in this embodiment, the movable wheel assembly 4 also includes a locking mechanism 43, which is connected to the hinge assembly 41 and the vehicle body 1 respectively. The locking mechanism 43 is used to lock the hinge assembly 41 and the vehicle body 1, so that the hinge assembly 41 can no longer rotate, so that the movable wheel assembly 4 is kept in the required support state, thereby keeping the vehicle body 1 and the testing instrument 7 in the required posture.

[0036] Furthermore, such as Figures 1 to 3As shown, in this embodiment, the hinge assembly 41 includes a pull rod 411 and a support rod 412. The first end of the support rod 412 is hinged to the vehicle body 1, and the second roller 42 is rotatably connected to the second end of the support rod 412. The first end of the pull rod 411 is hinged to the support rod 412, and the second end of the pull rod 411 can be connected to different parts of the vehicle body 1 to allow the movable wheel assembly 4 to be in different support states. The hinge point between the pull rod 411 and the support rod 412 is located between the first and second ends of the support rod 412, and is closer to the first end of the support rod 412; the hinge point between the pull rod 411 and the vehicle body 1 is located on the side of the first end of the support rod 412 away from the first roller 2. The first end of the support rod 412 and the vehicle body 1, as well as the first end of the pull rod 411 and the support rod 412, can be hinged respectively via pins (not labeled in the figure). The locking mechanism 43 is connected to the pull rod 411 and the vehicle body 1 respectively. The locking mechanism 43 is used to lock the pull rod 411 and the vehicle body 1, so that the hinge assembly 41 cannot continue to rotate, thereby keeping the movable wheel assembly 4 in the required support state.

[0037] Furthermore, such as Figures 1 to 3 As shown, in this embodiment, the locking mechanism 43 includes a locking pin 431, a first locking hole 432, and a plurality of second locking holes 433. The first locking hole 432 is located at the second end of the pull rod 411, and the plurality of second locking holes 433 are spaced apart on the vehicle body 1. Specifically, the plurality of second locking holes 433 are spaced apart along the length direction of the vehicle body 1. When the hinge assembly 41 rotates relative to the vehicle body 1, the first locking hole 432 on the pull rod 411 can correspond to the plurality of second locking holes 433 on the vehicle body 1 respectively. The locking pin 431 can be simultaneously inserted into the first locking hole 432 and the corresponding second locking hole 433 to lock the pull rod 411 and the vehicle body 1, thereby keeping the movable wheel assembly 4 in the required supported state. At the same time, the locking mechanism 43 also includes a pin 434 (specifically a spring pin), which engages with the locking pin 431 to limit the locking pin 431 and prevent the locking pin 431 from falling off.

[0038] Furthermore, such as Figure 1 , Figures 5 to 7 As shown, in this embodiment, the plurality of second lock holes 433 include a first sub-lock hole 433A, a second sub-lock hole 433B and a third sub-lock hole 433C, which are arranged at intervals from top to bottom.

[0039] like Figure 1 and Figure 5 As shown, when the locking pin 431 is simultaneously inserted into the first locking hole 432 and the first sub-locking hole 433A, the movable wheel assembly 4 remains in the first support state. like Figure 1 and Figure 6As shown, when the locking pin 431 is simultaneously inserted into the first locking hole 432 and the second sub-locking hole 433B, the movable wheel assembly 4 remains in the second support state. like Figure 1 and Figure 7 As shown, when the locking pin 431 is simultaneously inserted into the first locking hole 432 and the third sub-locking hole 433C, the movable wheel assembly 4 remains in the third support state.

[0040] Furthermore, such as Figure 1 As shown, in this embodiment, the support rod 412 is a straight rod, and the pull rod 411 is an arc-shaped rod that bends away from the side of the vehicle body 1. This allows the pull rod 411 to avoid the hinge joint between the support rod 412 and the vehicle body 1 when the movable wheel assembly 4 is in the third support state, thus preventing interference (e.g., Figure 7 As shown, when the movable wheel assembly 4 is in the third support state, if the pull rod 411 is a straight rod, the pull rod 411 will be approximately on the same straight line as the support rod 412. At this time, the pull rod 411 will interfere with the hinge joint between the support rod 412 and the vehicle body 1. Of course, in other embodiments, the pull rod 411 can also be of other shapes.

[0041] Furthermore, such as Figures 1 to 3 As shown, in this embodiment, the vehicle body 1 includes multiple crossbeams 11 and multiple longitudinal beams 12. The crossbeams 11 extend horizontally (left and right), and the multiple crossbeams 11 are spaced vertically. The longitudinal beams 12 extend vertically, and the multiple longitudinal beams 12 are spaced horizontally. The vehicle body 1 is welded together from the multiple crossbeams 11 and the multiple longitudinal beams 12. In this embodiment, there are four crossbeams 11 and two longitudinal beams 12. The opposite ends of each crossbeam 11 are welded and fixed to the two longitudinal beams 12 respectively. There are two handles 6, and the two handles 6 are fixedly connected to the top ends of the two longitudinal beams 12 respectively. The handles 6 can be an integral structure with the longitudinal beams 12, and the handles 6 are bent from the top ends of the longitudinal beams 12; or the handles 6 and the longitudinal beams 12 can be separate structures, and the handles 6 and the longitudinal beams 12 are fixed by welding. There are two first rollers 2, and the two first rollers 2 are rotatably connected to the bottom ends of the two longitudinal beams 12 respectively.

[0042] In this embodiment, the movable wheel assembly 4 is located at the center of the vehicle body 1 along its left-right direction. A connecting longitudinal beam 13 is provided on the vehicle body 1, positioned at the center of the vehicle body 1 along its left-right direction. The connecting longitudinal beam 13 is welded and fixed to the crossbeam 11. The connecting longitudinal beam 13 extends vertically, and multiple second locking holes 433 are provided on the connecting longitudinal beam 13, spaced apart along the length of the connecting longitudinal beam 13. That is, the second end of the pull rod 411 can be connected to different parts of the connecting longitudinal beam 13 via a locking pin 431. The first end of the support rod 412 is hinged to the connecting longitudinal beam 13. Specifically, a fixing block 14 is welded onto the connecting longitudinal beam 13, and the first end of the support rod 412 is hinged to the fixing block 14. In this embodiment, the connecting longitudinal beam 13 is divided into two sections by a middle crossbeam 11, namely an upper section and a lower section (not labeled in the figure). Both ends of the upper section and both ends of the lower section are welded and fixed to the crossbeam 11 respectively. Multiple second locking holes 433 are provided on the upper section of the connecting longitudinal beam 13. The first end of the support rod 412 is hinged to the lower section of the connecting longitudinal beam 13.

[0043] Of course, in other embodiments, the vehicle body 1 can also be other structures.

[0044] Furthermore, such as Figures 1 to 3 As shown, in this embodiment, the support assembly 3 is perpendicular to the vehicle body 1; however, in other embodiments, the support assembly 3 may not be perpendicular to the vehicle body 1. The support assembly 3 includes a support rod 31 extending along the front-rear direction of the vehicle body 1. The support rod 31 is fixedly connected to the bottom end of the vehicle body 1 and is used to support the testing instrument 7. In this embodiment, there are two support rods 31, spaced apart horizontally. Both support rods 31 are welded and fixed to the bottommost crossbeam 11 of the vehicle body 1. The support assembly 3 also includes a connecting rod 32 and a reinforcing plate 33. The two ends of the connecting rod 32 are welded and fixed to the two support rods 31 respectively, and the reinforcing plate 33 is welded and fixed to both the support rods 31 and the vehicle body 1 to provide reinforcement and improve the structural strength and load-bearing capacity of the support assembly 3. Of course, in other embodiments, the support assembly 3 may have other structural forms.

[0045] Furthermore, such as Figures 1 to 4 and Figure 7As shown, in this embodiment, the support assembly 3 is provided with a rotatable pulley 30, which is used to support the testing instrument 7 (i.e., the testing instrument 7 rests on the pulley 30). When the movable wheel assembly 4 is in the third support state, the testing instrument 7 can slide to the outside of the testing instrument transfer trolley via the pulley 30. Moreover, when the testing instrument 7 is put back onto the transfer trolley, the testing instrument 7 can also slide onto the support assembly 3 via the pulley 30, which saves effort and facilitates the handling of the testing instrument 7. Specifically, in this embodiment, both support rods 31 of the support assembly 3 are provided with pulleys 30, and the pulleys 30 are rotatably connected to the support rods 31. In other embodiments, pulleys 30 can also be provided on the connecting rod 32.

[0046] Furthermore, such as Figures 1 to 4 As shown, in this embodiment, the test instrument transfer trolley also includes a limiting component 5. The limiting component 5 is disposed on the trolley body 1, and the limiting component 5 and the supporting component 3 are located on the same side of the trolley body 1, that is, the limiting component 5 is located on the front side of the trolley body 1. The limiting component 5 and the supporting component 3 are arranged vertically at intervals, with the limiting component 5 located above the supporting component 3. In this embodiment, the limiting component 5 is located at the middle position of the trolley body 1 in the vertical direction. The limiting component 5 is used to limit the test instrument 7 to the trolley body 1 to prevent the test instrument 7 from detaching from the transfer trolley during storage and transfer. In this embodiment, the limiting component 5 is detachably connected to the trolley body 1. When it is necessary to remove the test instrument 7 from the transfer trolley, the limiting component 5 is first removed, and then the test instrument 7 can be removed. Of course, in other embodiments, the limiting component 5 and the trolley body 1 can also be connected in an openable and closable manner. For example, one side of the limiting component 5 is rotatably connected to the trolley body 1, and the other side is locked to the trolley body 1 by a locking mechanism, which can also realize the opening and closing of the limiting component 5.

[0047] Specifically, in this embodiment, the limiting component 5 includes a fixed limiting rod 51 and a movable limiting rod 52. The fixed limiting rod 51 extends along the front-rear direction of the vehicle body 1, and the movable limiting rod 52 extends along the left-right direction of the vehicle body 1. There are two fixed limiting rods 51, which are fixed to the left and right sides of the vehicle body 1 respectively. Specifically, one end of the two fixed limiting rods 51 is welded to the two longitudinal beams 12 of the vehicle body 1 respectively, and the other end of the two fixed limiting rods 51 is provided with threaded holes (not labeled in the figure). Both ends of the movable limiting rod 52 are provided with bolt holes 521. Both ends of the movable limiting rod 52 are fixed to the two fixed limiting rods 51 by bolts 53, that is, the bolts 53 pass through the bolt holes 521 on the movable limiting rod 52 and are threadedly connected to the threaded holes on the fixed limiting rod 51. The bolt holes 521 at both ends of the movable limiting rod 52 are elongated holes, with one end being a closed hole (i.e., it has no opening) and the other end being a U-shaped hole (i.e., it has an opening). This facilitates left and right adjustment of the position of the movable limiting rod 52 and allows for easy connection between the movable limiting rod 52 and the fixed limiting rod 51. The fixed limiting rod 51 limits the testing instrument 7 in the left-right direction, while the movable limiting rod 52 limits the testing instrument 7 in the front-back direction. When it is necessary to remove the testing instrument 7 from the transfer trolley, simply unscrew the bolt 53, remove the movable limiting rod 52, and then the testing instrument 7 can be taken out.

[0048] This utility model embodiment also provides a test instrument transfer method based on the above-mentioned test instrument transfer cart, the test instrument transfer method including: like Figure 5 As shown, the test instrument 7 is placed on the test instrument transport trolley; when the test instrument 7 is in storage, the movable wheel assembly 4 is adjusted to the first support state so that the trolley body 1 and the test instrument 7 are in a flat position. When testing instrument 7 is in use (i.e., when testing instrument 7 is needed to test engineering machinery), such as Figure 6 As shown, adjust the movable wheel assembly 4 to the second support state, so that the vehicle body 1 and the testing instrument 7 are tilted. Then, move the testing instrument transfer trolley via the first roller 2 and the second roller 42. After the testing instrument transfer trolley moves to the designated location (e.g., an outdoor testing site), as shown... Figure 7 As shown, adjust the movable wheel assembly 4 to the third support state so that the vehicle body 1 and the testing instrument 7 are in a standing position. Then, transfer the testing instrument 7 to the outside of the testing instrument transfer trolley so that the engineering machinery can be tested using the testing instrument 7 in the future.

[0049] Taking the test instrument 7 as a tension sensor as an example, when conducting traction force testing, since the tension sensor is already in a vertical position after being taken out of the transfer trolley, the upper end of the tension sensor can be directly connected to the test vehicle (i.e. the engineering machinery being tested) through a pin, and the lower end of the tension sensor can be connected to the ground anchor fixed on the ground through a pin. There is no need to adjust the posture of the tension sensor, which saves time and effort.

[0050] Furthermore, in this embodiment, the test instrument transfer method further includes: After the testing instrument 7 is used (i.e., after the testing of the engineering machinery is completed), it is transferred back to the testing instrument transfer trolley (at this time, the movable wheel assembly 4 is in the third support state). Then, the movable wheel assembly 4 is adjusted to the second support state, so that the trolley body 1 and the testing instrument 7 are tilted, and then the testing instrument transfer trolley is moved by the first roller 2 and the second roller 42. After the testing instrument transfer trolley is moved to the storage location (e.g., indoors), the movable wheel assembly 4 is adjusted to the first support state, so that the trolley body 1 and the testing instrument 7 are in a flat position, so that the testing instrument 7 can be stored more stably and safely. Since the testing instrument 7 does not need to be removed from the transfer trolley during storage, the handling action is eliminated, saving time and effort.

[0051] The test instrument transport trolley provided in this embodiment allows for convenient storage of the test instrument 7 without requiring removal from the trolley or any lifting or lowering. During testing, simply move the trolley to the designated position, adjust its orientation, and unlock the limiting component 5 to retrieve the test instrument 7 for testing. No flipping of the test instrument 7 is necessary, making it convenient and quick to use. Furthermore, the transport trolley has a simple structure, is easy to assemble, and has a low cost. Current trolleys require 2-3 people to operate; however, the transport trolley in this application only requires 1-2 people, saving labor costs.

[0052] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A test instrument transport trolley, characterized in that, The device includes a vehicle body (1), a first roller (2) disposed at one end of the vehicle body (1), a support assembly (3) disposed on one side of the vehicle body (1), and a movable wheel assembly (4) disposed on the opposite side of the vehicle body (1). The first roller (2) is rotatably connected to the vehicle body (1). The support assembly (3) is fixedly disposed on the vehicle body (1) at one end near the first roller (2). The support assembly (3) is used to support the testing instrument (7). The movable wheel assembly (4) includes a hinge assembly (41) and a second roller (42). The hinge assembly (41) is hinged to the vehicle body (1), and the second roller (42) is rotatably connected to the hinge assembly (41). The vehicle body (1) is supported by the first roller (2) and the second roller (42). When the hinge assembly (41) rotates relative to the vehicle body (1), the movable wheel assembly (4) has multiple different support states, thereby allowing the vehicle body (1) to assume different postures.

2. The test instrument transport trolley as described in claim 1, characterized in that, The movable wheel assembly (4) has a first support state, a second support state, and a third support state; When the movable wheel assembly (4) is in the first support state, the second roller (42) is located at the end of the vehicle body (1) away from the first roller (2), and the vehicle body (1) is in a flat position; When the movable wheel assembly (4) is in the second support state, the second roller (42) is located between the two opposite ends of the vehicle body (1), and the vehicle body (1) is in an inclined posture; When the movable wheel assembly (4) is in the third support state, the second roller (42) is located at the end of the vehicle body (1) close to the first roller (2), and the vehicle body (1) is in a standing posture.

3. The test instrument transport trolley as described in claim 1, characterized in that, The hinge assembly (41) includes a pull rod (411) and a support rod (412). The first end of the support rod (412) is hinged to the vehicle body (1), and the second roller (42) is rotatably connected to the second end of the support rod (412). The first end of the pull rod (411) is hinged to the support rod (412), and the second end of the pull rod (411) can be connected to different parts of the vehicle body (1) so that the movable wheel assembly (4) is in different support states.

4. The test instrument transport trolley as described in claim 3, characterized in that, The movable wheel assembly (4) also includes a locking mechanism (43), which is connected to the pull rod (411) and the vehicle body (1) respectively. The locking mechanism (43) is used to lock the pull rod (411) and the vehicle body (1) so that the movable wheel assembly (4) is kept in the required support state.

5. The test instrument transport trolley as described in claim 4, characterized in that, The locking mechanism (43) includes a locking pin (431), a first locking hole (432) and a plurality of second locking holes (433). The first locking hole (432) is located at the second end of the pull rod (411), and the plurality of second locking holes (433) are spaced apart on the vehicle body (1). When the hinge assembly (41) rotates relative to the vehicle body (1), the first locking hole (432) on the pull rod (411) can correspond to a plurality of second locking holes (433) on the vehicle body (1), and the locking pin (431) can be inserted into the first locking hole (432) and the corresponding second locking hole (433) at the same time to lock the pull rod (411) and the vehicle body (1).

6. The test instrument transport trolley as described in claim 5, characterized in that, The plurality of second lock holes (433) include a first sub-lock hole (433A), a second sub-lock hole (433B), and a third sub-lock hole (433C); the movable wheel assembly (4) has a first support state, a second support state, and a third support state; When the locking pin (431) is simultaneously inserted into the first locking hole (432) and the first sub-locking hole (433A), the movable wheel assembly (4) remains in the first support state; When the locking pin (431) is simultaneously inserted into the first locking hole (432) and the second sub-locking hole (433B), the movable wheel assembly (4) remains in the second support state; When the locking pin (431) is simultaneously inserted into the first lock hole (432) and the third sub-lock hole (433C), the movable wheel assembly (4) remains in the third support state.

7. The test instrument transport trolley as described in claim 3, characterized in that, The pull rod (411) is an arc-shaped rod that bends toward the side away from the vehicle body (1).

8. The test instrument transport trolley as described in claim 1, characterized in that, It also includes a limiting component (5), which is disposed on the vehicle body (1) and the limiting component (5) and the supporting component (3) are located on the same side of the vehicle body (1); the limiting component (5) is used to limit the testing instrument (7) to the vehicle body (1).

9. The test instrument transport trolley as described in claim 1, characterized in that, The support component (3) is provided with a rotatable pulley (30), which is used to support the test instrument (7); the test instrument (7) can slide to the outside of the test instrument transfer trolley via the pulley (30).

10. The test instrument transport trolley as described in any one of claims 1-9, characterized in that, A handle (6) is provided on the end of the vehicle body (1) away from the first roller (2).

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