Tractor lifting detection device

Abstract

The utility model provides a tractor lifting detection device, which belongs to the technical field of agricultural machinery and comprises a bottom plate, a fixed track, a lifting ring, a connecting mechanism, a tension sensor, a stepless connecting component, a scale rod, an upper connecting ring and a lower connecting ring, the bottom of the tension sensor is connected with the lifting ring through the connecting mechanism, and the lifting ring is connected with the fixed track. The scale rod is arranged above the tension sensor, the scale rod is connected with the stepless connecting assembly through the upper connecting ring, the stepless connecting assembly comprises an adjusting sleeve, threaded rods are arranged in the upper end and the lower end of the adjusting sleeve, and the threaded rods are connected with the upper connecting ring and the tension sensor. The device is simple in structure and low in manufacturing cost, and compared with the same type of lifting detection devices for stepped stroke point testing, the device is additionally provided with a stepless sleeve spiral adjusting mechanism on a connecting piece on the basis of stepped adjustment, and the stepless sleeve spiral adjusting mechanism is matched with a stepped hole site of a scale rod, so that lifting force data of various required accurate stroke points can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a tractor lifting detection device. Background Art

[0002] As an important part of agricultural machinery, tractors have developed rapidly in my country. The lifting system of tractors plays a very important role in farming operations, because the operating environment of tractors is mostly agricultural farmland environment, which has the characteristics of poor roads, different heights, and many deep water surfaces.

[0003] Most tractor lifting detection devices use stepless hydraulic loading force adjustment lifting detection devices, which are connected through a three-point suspension method. However, this type of device generally has some disadvantages during actual use. For example, the stepless hydraulic loading force adjustment lifting detection device basically uses a hydraulic rod, but the hydraulic rod has some problems such as high cost and difficult maintenance during actual use, poor real-time performance, complex structure, and inconvenient replacement.

[0004] Therefore, it is necessary to propose a tractor lifting detection device to solve the above problems. Utility Model Content

[0005] In view of this, the utility model provides a tractor lifting detection device, which has the advantages of strong adaptability, stable and reliable structure, and adjustable height. Compared with some stepless hydraulic loading force adjustment lifting detection devices, the device has a simple and stable structure, requires fewer parts, is easy to replace, has low cost, and is highly reliable. Compared with some similar type of stepped stroke mark test lifting detection devices, the device adds a stepless sleeve screw adjustment mechanism to the connecting part on the basis of stepped adjustment, which cooperates with the stepped hole position of the scale rod to meet the required lifting force data at various precise stroke points.

[0006] In order to solve the above technical problems, the utility model provides a tractor lifting detection device, including a base plate, a fixed rail, a lifting ring, a connecting mechanism, a tension sensor, a stepless connecting assembly, a scale rod and an upper connecting ring and a lower connecting ring. The bottom of the tension sensor is connected to the lifting ring through the connecting mechanism. The cross section of the tension sensor is rectangular, the cross section of the lifting ring is circular, and the lifting ring is connected to the fixed rail installed above the base plate. The cross section of the fixed rail is rectangular. The fixed rail is specifically provided with a slide groove, and a bearing is arranged in the slide groove. The scale rod is arranged above the tension sensor, the cross section of the scale rod is rectangular, and the bottom end of the scale rod is connected to the stepless connecting assembly through the upper connecting ring. The stepless connecting assembly includes an adjusting sleeve arranged between the upper connecting ring and the tension sensor, the cross section of the adjusting sleeve is circular, the upper and lower ends of the adjusting sleeve are matched with the set threaded rod, and the thread directions of the two threaded rods are set in opposite directions, and the adjusting sleeve is matched with an internal thread. The top end of the upper threaded rod is fixedly connected to the upper connecting ring; the bottom end of the lower threaded rod is fixedly connected to the top of the tension sensor.

[0007] The lower connecting ring is arranged above the lifting ring, and the cross-section of the lower connecting ring is rectangular. The connecting mechanism includes a replaceable connecting plate arranged above the lower connecting ring, the cross-section of the replaceable connecting plate is rectangular, and a middle connecting ring is arranged on the replaceable connecting plate, the cross-section of the middle connecting ring is rectangular, and the upper and lower ends of the replaceable connecting plate are provided with perforations, which are circular perforations. Openings are symmetrically arranged on the lower connecting ring and the middle connecting ring, and the openings are circular openings. The lower connecting ring and the middle connecting ring are connected to the replaceable connecting plate by bolts and nuts.

[0008] There are multiple holes on the ruler rod, all of which are circular holes arranged in an array. The upper connecting ring is connected to the ruler rod at one end through the circular holes on the ruler rod, and the connection is fixed by screws and nuts.

[0009] A nut is fixedly installed on the upper connecting ring, and the threaded rod on the upper side of the adjusting sleeve is rotationally connected to the thread on the upper connecting ring through the thread at the top of the threaded rod. A nut is provided on the side of the tension sensor close to the adjusting sleeve, and the threaded rod on the lower side of the adjusting sleeve is threadedly connected to the nut on the tension sensor. The threaded rods on the upper and lower sides of the adjusting sleeve are set in opposite directions.

[0010] In summary, compared with the prior art, this application has at least one of the following beneficial technical effects:

[0011] 1. The structure is simple, stable and reliable, and can meet the testing needs of improving the performance of tractors in the 50-300 horsepower range.

[0012] 2. The device has strong applicability. Connecting plates of different lengths and adjustment sleeves can be replaced in the middle to meet the actual pit depth requirements. It can also cooperate with the scale rod to measure the lifting force at a specific point.

[0013] 3. When testing the lifting force of different tractors, the lifting frame needs to be replaced and assembled. There will be collision and friction when the lifting frame is fitted and assembled with the scale rod. The bolts at both ends of the adjusting sleeve are located below the connecting ring of the scale rod to avoid collision and friction between the threads on the adjusting bolt during assembly, thereby preventing the adjustment bolt from being scrapped and ineffective. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a tractor lifting detection device according to the present utility model;

[0015] Figure 2 It is a schematic structural diagram of the side view of the utility model;

[0016] Figure 3 This is a schematic structural diagram specifically showing the present invention.

[0017] In the figure: 1. Scale rod; 2. Upper connecting ring; 3. Adjusting sleeve; 4. Tension sensor; 5. Middle connecting ring; 6. Replaceable connecting plate; 7. Lower connecting ring; 8. Fixed rail; 9. Lifting ring; 10. Bearing; 11. Base plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiment of the present invention clearer, the following will be combined with the appended drawings of the embodiment of the present invention. Figure 1-3 , clearly and completely describing the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field fall within the scope of protection of the present invention.

[0019] like Figure 1-3As shown: This embodiment provides a tractor lifting detection device, including a base plate 11, a fixed rail 8, a lifting ring 9, a connecting mechanism, a tension sensor 4, a stepless connection component, a scale rod 1 and an upper connecting ring 2 and a lower connecting ring 7. The bottom of the tension sensor 4 is connected to the lifting ring 9 through a connecting mechanism. The connecting mechanism connects the tension sensor 4 and the lifting ring 9 through a mechanical connection. The cross section of the tension sensor 4 is rectangular, the cross section of the lifting ring 9 is circular, the cross section of the tension sensor 4 is rectangular, the lifting ring 9 is connected to the fixed rail 8 installed above the base plate 11, the cross section of the fixed rail 8 is rectangular, the fixed rail 8 is specifically provided with a slide groove, a bearing 10 is arranged in the slide groove, and the lifting ring 9 is connected to the bearing 10 The fixed rail 8 is connected, the scale rod 1 is arranged above the tension sensor 4, the cross-section of the scale rod 1 is rectangular, and the bottom end of the scale rod 1 is connected to the stepless connection component through the upper connecting ring 2, and the stepless connection component includes an adjusting sleeve 3 arranged between the upper connecting ring 2 and the tension sensor 4, the cross-section of the adjusting sleeve 3 is circular, and the upper and lower ends of the adjusting sleeve 3 are matched with the set threaded rod, and the thread directions of the two threaded rods are set in opposite directions. The threads set in opposite directions at the upper and lower ends can achieve the effect of the same entry and exit during the installation process. The adjusting sleeve 3 is matched with an internal thread, the top of the upper threaded rod is fixedly connected to the upper connecting ring 2, and the bottom end of the lower threaded rod is fixedly connected to the top of the tension sensor 4.

[0020] The utility model has the advantages of strong adaptability, stable and reliable structure, and adjustable height. Compared with some stepless hydraulic loading force adjustment and lifting detection devices, this device has a simple and stable structure, requires fewer parts, is easy to replace, has low cost, and is highly reliable. Compared with some similar type of stepped stroke mark test and lifting detection devices, this device adds a stepless sleeve screw adjustment mechanism to the connecting part on the basis of stepped adjustment, which cooperates with the stepped hole position of the scale rod 1 to meet the required lifting force data at various precise stroke points.

[0021] like Figure 1 As shown, the lower connecting ring 7 is arranged above the lifting ring 9, and the cross-section of the lower connecting ring 7 is rectangular. The connecting mechanism includes a replaceable connecting plate 6 arranged above the lower connecting ring 7, and the cross-section of the replaceable connecting plate 6 is rectangular. A middle connecting ring 5 is provided on the replaceable connecting plate 6, and the cross-section of the middle connecting ring 5 is rectangular. The upper and lower ends of the replaceable connecting plate 6 are provided with perforations, which are circular perforations. Openings are symmetrically provided on the lower connecting ring 7 and the middle connecting ring 5, and the openings are circular openings. The lower connecting ring 7 and the middle connecting ring 5 are connected to the replaceable connecting plate 6 by bolts and nuts. By connecting the replaceable connecting plate 6, the middle connecting ring 5 and the lower connecting ring 7 respectively, the fixing effect of the device can be better, and the replaceable connecting plate 6, the middle connecting ring 5 and the lower connecting ring 7 are all mechanically installed, so that they can be easy to disassemble and install, and the cost is low.

[0022] like Figure 1 As shown, a plurality of through-holes are provided on the ruler rod 1, and the through-holes are all circular through-holes arranged in an array. The upper connecting ring 2 is connected to the ruler rod 1 at one end of the ruler rod 1 through the circular through-holes on the ruler rod 1. The connection is fixed by screws and nuts. The hole spacing of the circular through-holes on the ruler rod 1 is 10 cm. The multiple circular through-holes of the ruler rod 1 can make its specific use effect better and the adjustability strong.

[0023] like Figure 1 As shown, a nut is fixedly installed on the upper connecting ring 2, and the threaded rod on the upper side of the adjusting sleeve 3 is rotationally connected to the thread on the upper connecting ring 2 through the thread at the top of the threaded rod. The tension sensor 4 is provided with a nut on the side close to the adjusting sleeve 3, and the threaded rod on the lower side of the adjusting sleeve 3 is threadedly connected to the nut on the tension sensor 4. The threaded rods on the upper and lower sides of the adjusting sleeve 3 are set in opposite directions, and the two ends of the adjusting sleeve 3 are respectively connected to the upper connecting ring 2 and the tension sensor 4. The specific height distance can be adjusted by adjusting the sleeve 3.

[0024] Working principle: The base plate is fixed by anchor bolts or welding, and the sliding track is welded to the base plate. The track consists of a short shaft and bearings at both ends to form a movable slider, which is convenient for adjusting the front and rear displacement of the connecting device to adapt to the front and rear adjustment range required for tractors of different sizes and three-point suspension lifting strokes. The lifting ring is inserted into the short shaft and the connecting ring is fixed by a nut. The connecting plate is pinned into the two connecting rings. The length of the connecting plate can be replaced with different lengths according to the height of the pit. The middle connecting ring is connected to the tension sensor by bolts, and the adjusting sleeve is connected to the top of the tension sensor by bolts. The holes at both ends of the sleeve are positive and negative thread holes. When the sleeve is rotated clockwise by the handle, the bolts at both ends are screwed in at the same time to shorten the distance. The adjustable range is 0~10cm. The upper connecting ring fixes the scale rod, and the hole spacing on the scale rod is 10cm.

[0025] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0026] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A tractor lifting detection device, characterized in that: The invention comprises a base plate (11), a fixed rail (8), a lifting ring (9), a connecting mechanism, a tension sensor (4), a stepless connecting assembly, a scale rod (1), an upper connecting ring (2), and a lower connecting ring (7), wherein the bottom of the tension sensor (4) is connected to the lifting ring (9) through the connecting mechanism, and the lifting ring (9) is connected to the fixed rail (8) installed above the base plate (11), the scale rod (1) is arranged above the tension sensor (4), and the bottom end of the scale rod (1) is connected to the stepless connecting assembly through the upper connecting ring (2), and the stepless connecting assembly comprises an adjusting sleeve (3) arranged between the upper connecting ring (2) and the tension sensor (4), the upper and lower ends of the adjusting sleeve (3) are both matched with the sleeve threaded rod, and the thread directions of the two threaded rods are arranged in opposite directions, the top end of the upper threaded rod is fixedly connected to the upper connecting ring (2), and the bottom end of the lower threaded rod is fixedly connected to the top of the tension sensor (4).

2. The tractor lift detection device according to claim 1, wherein: The lower connecting ring (7) is arranged above the lifting ring (9), and the connecting mechanism comprises a replaceable connecting plate (6) arranged above the lower connecting ring (7), and a middle connecting ring (5) is arranged on the replaceable connecting plate (6).

3. The tractor lift detection device according to claim 1, wherein: A plurality of through-holes are provided on the scale rod (1), and the upper connecting ring (2) is connected to the scale rod (1) at one end of the scale rod (1) through the through-holes on the scale rod (1).

4. The tractor lift detection device according to claim 1, wherein: A nut is fixedly mounted on the upper connecting ring (2), and the threaded rod on the upper side of the adjusting sleeve (3) is rotatably connected to the thread on the upper connecting ring (2) via the thread at the top of the threaded rod. The tension sensor (4) is provided with a nut on a side close to the adjusting sleeve (3), and the threaded rod on the lower side of the adjusting sleeve (3) is threadedly connected to the nut on the tension sensor (4).

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