Signal acquisition device for electric pallet truck

Abstract

The utility model discloses a signal collection device for electric carrier, including main body frame, be equipped with with its fixed connection bottom plate on the main body frame, and the bottom plate is provided in pairs, install horizontal apron on the bottom plate, be equipped with a plurality of symmetrical distribution's cantilever type sensor between horizontal apron and bottom plate, still be equipped with control panel on the main body frame, control panel with every cantile bar type sensor electric connection, the head of bottom plate is equipped with arc part, the head of horizontal apron is set up to half enclose arc part, and the outline of arc part and the outline of horizontal apron are mutually adapted. The utility model discloses through cantilever type sensor and carries out weighing and stress analysis, and the commonality is good, and at the same time, through arc part protection cantilever type sensor, and the detection process of cantilever type sensor is more stable and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of transport vehicle technology, specifically relating to a signal acquisition device for electric transport vehicles. Background Technology

[0002] Electric pallet trucks are commonly used material handling tools in daily life. They are typically electrically driven, making material handling easier and more convenient. However, due to their electric drive, these trucks often travel at certain speeds, making their front end susceptible to impact damage. A patent with publication number CN119637773A discloses an electric pallet truck with pallet measurement function and a method for identifying transported materials. The truck includes a forklift arm for lifting materials, an operating platform, a support structure, and an image module. The operating platform is fixed to one side of the support structure, while the forklift arm is slidably mounted on the other side. A power assembly providing lifting power is located between the forklift arm and the support structure. The image module includes a first depth camera and a second depth camera. The first depth camera is located at the end of the forklift arm furthest from the support structure, and the second depth camera is located at the upper end of the support structure. While the existing electric pallet truck is equipped with a load cell, its detection performance is poor, resulting in low measurement accuracy. Furthermore, the load cell is installed inside a tank without an anti-collision device, making it prone to damage and affecting the final detection results. Therefore, it is necessary to design a signal acquisition device for electric transport vehicles to overcome the above problems. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by designing a signal acquisition device for electric transport vehicles. This invention uses a cantilever sensor for weighing and force analysis, which has good versatility. At the same time, the cantilever sensor is protected by a circular arc section, making the detection process of the cantilever sensor more stable and reliable.

[0004] The objective of this invention is achieved through the following technical solution: a signal acquisition device for an electric transport vehicle, comprising a main frame, a base plate fixedly connected to the main frame, and the base plates being arranged in pairs; a horizontal cover plate is installed on the base plate, and a plurality of symmetrically distributed cantilever sensors are arranged between the horizontal cover plate and the base plate; a control panel is also provided on the main frame, and the control panel is electrically connected to each of the cantilever sensors; the head of the base plate is provided with an arc portion, the arc portion being partially surrounded by the head of the horizontal cover plate, and the outer contour of the arc portion matching the outer contour of the horizontal cover plate.

[0005] Preferably, the base plate is provided with a mounting groove, and the horizontal cover plate is installed above the mounting groove and covers the mounting groove; the base plates are arranged in pairs, and each mounting groove is provided with a cantilever sensor arranged in pairs.

[0006] Preferably, the cantilever sensors are symmetrically arranged in the mounting grooves on the left and right sides, and each cantilever sensor is electrically connected to the control panel.

[0007] Preferably, the cantilever sensor includes a sensor body and a support plate, which are arranged side by side, and fastening screws for fixing the sensor body, support plate and base plate are provided between them; the fastening screws pass through the sensor body and support plate in sequence, and extend to the base plate; a gap is left between the sensor body and support plate.

[0008] Preferably, the support plate is horizontally mounted on the base plate, and the sensor body is provided with a contact element that is threadedly connected to it; a gap is left between the end of the sensor body and the support plate near the contact element, and the size of the gap is between 1 mm and 1.5 mm; when the cantilever sensor is mounted on the base plate, the top end face of the contact element is parallel to the upper end face of the horizontal cover plate.

[0009] Preferably, the head of the base plate has an arc-shaped portion, which partially surrounds the head of the horizontal cover plate; the cantilever sensor is spaced apart from the arc-shaped portion.

[0010] When goods collide with the transport vehicle, the goods first contact the arc-shaped part on the base plate; this prevents the goods from directly impacting the horizontal cover plate, which is connected to the cantilever sensor, thus preventing the cantilever sensor from being subjected to excessive impact force. The cantilever sensor is better protected, thereby better realizing the functions of weighing and force analysis. A gap is left between the sensor body and the support plate, which allows the sensor body to automatically reset better. The reset effect is best when the gap between the sensor body and the support plate is in the range of 1 mm to 1.5 mm; when the cantilever sensor is subjected to vertical and horizontal impact forces from the cover plate, the sensor body can accurately reset due to the reasonable gap setting. At the same time, the support plate is horizontally mounted on the base plate, which improves the measurement effect of the cantilever sensor. Since there are two cantilever sensors on each base plate, the cantilever sensors have two functions: the cantilever sensors are electrically connected to the control panel, and through data conversion, the weight of the goods placed on the horizontal cover plate can be directly measured. Simultaneously, cantilever sensors are distributed left and right, allowing the control panel to analyze the stress state of one side of the base plate, thereby determining the off-center load of the cargo on the horizontal cover. The control panel has a preset off-center load value in its initial state. When the actual off-center load exceeds the preset value, the drive unit and hydraulic lifting assembly automatically stop working, making it safer and more reliable for the user. The sensor body and support plate are secured with fastening screws, facilitating installation and preventing sensor body wobbling, resulting in higher detection accuracy. An adjustable-height contact element is provided on the sensor body; the vertical position of the contact element can be adjusted relative to the horizontal cover, improving versatility.

[0011] Preferably, a drive device is provided at the rear of the main frame, a connecting rod assembly is provided between the main frame and the base plate, and a transmission assembly is provided between the connecting rod assembly and the drive device; the drive device includes a main support, a motor support rotatably connected to the main support, and a drive wheel rotatably connected to the motor support; a hydraulic lifting assembly rotatably connected to the main support is provided above the main support, the hydraulic lifting assembly includes a lifting rod, the end of which is rotatably connected to the main frame; both the drive device and the hydraulic lifting assembly are electrically connected to the control panel.

[0012] Preferably, the linkage assembly includes a long rod body, a roller seat, and a pair of rolling wheels. The linkage assemblies are arranged in pairs, and each linkage assembly is installed in each base plate. The transmission assembly includes a transmission component body, which is rotatably connected to the main frame. One end of the long rod body is hinged to the roller seat, and the other end of the long rod body is hinged to the transmission component body. The roller seat is rotatably connected to the base plate, and the roller seat contains a rolling wheel that is rotatably connected to it.

[0013] Preferably, the transmission assembly includes a transmission body, a connecting pin, and a pair of swing arms; the connecting pin is rotatably connected to the main frame, and a retaining ring is installed at the end of the connecting pin; the transmission body is sleeved on the outer layer of the connecting pin, and the transmission body can rotate relative to the connecting pin; both ends of the transmission body are adjacent to the inner wall of the main frame, and a swing arm is fixedly installed on the transmission body, with the end of the swing arm away from the transmission body hinged to the main bracket.

[0014] When the hydraulic lifting assembly is not raised, the drive unit operates, causing the drive wheels to rotate, thus moving the entire transport vehicle. When loaded with goods, the goods are often placed on the material frame. In this case, the hydraulic lifting assembly is used to raise the main frame, lifting the material frame off the ground. Since the rolling wheels on the linkage assembly are still in contact with the ground, the drive unit can then move the entire transport vehicle after it has been raised. When the hydraulic lifting assembly controls the lifting rod to rise, the main frame rises. As the main frame rises, the end of the swing arm away from the main support rises, causing the transmission component to rotate. When the transmission component is in motion, the end of the transmission component that is hinged to the long rod pushes the long rod towards the arc section. This movement of the long rod pushes the roller seat to rotate, causing the rolling wheels to sink, ensuring the rolling wheels remain in contact with the ground. Similarly, when the lifting rod on the hydraulic lifting assembly retracts and resets, the swing arm rotates and resets, automatically returning the rolling wheels to their initial state. The material frame then automatically descends from its high position to its low position, completing the goods transport.

[0015] Compared with existing technologies, this utility model has the following advantages: 1. By setting the arc part, the end of the horizontal cover plate has a better buffering effect, thus providing better protection for the cantilever sensor; 2. The cantilever sensor has weighing and force analysis functions. Through the control panel, it can analyze the off-center loading state of the goods placed on the horizontal cover plate, thus intuitively reminding the user to rearrange the goods; it is safer and more reliable for users, and has better versatility; 3. A reasonable gap is set between the sensor body and the support plate of the cantilever sensor, which facilitates the automatic reset of the sensor body and makes the detection of the cantilever sensor more accurate. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model; Figure 2 This is an exploded view of the present invention; Figure 3 This is a diagram of the internal structure of this utility model; Figure 4 A three-dimensional view of the drive unit; Figure 5 A 3D view of a cantilever sensor; The diagram shows the following components: 1. Main frame; 2. Base plate; 3. Horizontal cover plate; 4. Cantilever sensor; 41. Sensor body; 42. Support plate; 43. Fastening screw; 44. Contact element; 5. Control panel; 6. Arc part; 7. Mounting groove; 8. Drive device; 81. Main bracket; 82. Motor bracket; 83. Drive wheel; 9. Linkage assembly; 91. Long rod body; 92. Roller seat; 93. Rolling wheel; 10. Transmission assembly; 101. Transmission component body; 102. Connecting pin; 103. Swing arm; 104. Retaining ring; 11. Hydraulic lifting assembly; 111. Lifting rod. Detailed Implementation

[0017] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings: like Figures 1 to 5 As shown, this embodiment discloses a signal acquisition device for an electric transport vehicle, including a main frame 1, a base plate 2 fixedly connected to the main frame 1, and base plates 2 arranged in pairs; a horizontal cover plate 3 is installed on the base plate 2, and a plurality of symmetrically distributed cantilever sensors 4 are arranged between the horizontal cover plate 3 and the base plate 2; a control panel 5 is also provided on the main frame 1, and the control panel 5 is electrically connected to each of the cantilever sensors 4; the head of the base plate 2 is provided with an arc portion 6, which partially surrounds the head of the horizontal cover plate 3, and the outer contour of the arc portion 6 is adapted to the outer contour of the horizontal cover plate 3.

[0018] The base plate 2 has a mounting groove 7, and the horizontal cover plate 3 is installed above the mounting groove 7, covering the mounting groove 7. The base plates 2 are arranged in pairs, and each mounting groove 7 has a cantilever sensor 4 arranged in pairs. The cantilever sensors 4 arranged in the mounting grooves 7 on the left and right sides are symmetrically arranged, and each cantilever sensor 4 is electrically connected to the control panel 5. The cantilever sensor 4 includes a sensor body 41 and a support plate 42, which are arranged side by side. A fastening screw 43 for fixing the sensor body 41, the support plate 42 and the base plate 2 is provided between them. The fastening screw 43 passes through the sensor body 41 and the support plate 42 in sequence, and extends to the base plate 2. A gap is left between the sensor body 41 and the support plate 42. The support plate 42 is horizontally mounted on the base plate 2, and the sensor body 41 is provided with a contact 44 that is threadedly connected to it. A gap is left between the sensor body 41 and the support plate 42 near the contact 44, with the gap size being between 1 mm and 1.5 mm. When the cantilever sensor 4 is mounted on the base plate 2, the top end face of the contact 44 is parallel to the upper end face of the horizontal cover plate 3. The head of the base plate 2 has an arc portion 6, which partially surrounds the head of the horizontal cover plate 3. The cantilever sensor 4 is spaced apart from the arc portion 6.

[0019] A drive device 8 is provided at the rear of the main frame 1, and a connecting rod assembly 9 is provided between the main frame 1 and the base plate 2. A transmission assembly 10 is provided between the connecting rod assembly 9 and the drive device 8. The drive device 8 includes a main support 81, a motor support 82 rotatably connected to the main support 81, and a drive wheel 83 rotatably connected to the motor support 82. A hydraulic lifting assembly 11 rotatably connected to the main support 81 is provided above the main support 81. The hydraulic lifting assembly 11 includes a lifting rod 111, the end of which is rotatably connected to the main frame 1. Both the drive device 8 and the hydraulic lifting assembly 11 are electrically connected to the control panel 5. The connecting rod assembly 9 includes a long rod body 91, a roller seat 92, and a pair of rolling wheels 93. The connecting rod assemblies 9 are arranged in pairs, and each connecting rod assembly 9 is installed in each of the base plates 2. The transmission assembly 10 includes a transmission component body 101, which is rotatably connected to the main frame 1. One end of the long rod body 91 is hinged to the roller seat 92, and the other end of the long rod body 91 is hinged to the transmission component body 101. The roller seat 92 is rotatably connected to the base plate 2, and the roller seat 92 is provided with a rolling wheel 93 rotatably connected to it. The transmission assembly 10 includes a transmission body 101, a connecting pin 102, and a pair of swing arms 103. The connecting pin 102 is rotatably connected to the main frame 1, and a retaining ring 104 is installed at the end of the connecting pin 102. The transmission body 101 is sleeved on the outer layer of the connecting pin 102, and the transmission body 101 can rotate relative to the connecting pin 102. Both ends of the transmission body 101 are adjacent to the inner wall of the main frame 1, and the swing arms 103 are fixedly installed on the transmission body 101. The end of the swing arm 103 away from the transmission body 101 is hinged to the main bracket 81.

[0020] The specific operation process of this embodiment is as follows: When the goods collide with the transport vehicle, the goods first contact the arc portion 6 on the base plate 2; this avoids the goods directly impacting the horizontal cover plate 3. The horizontal cover plate 3 is connected to the cantilever sensor 4, preventing the cantilever sensor 4 from being subjected to a large impact force. The cantilever sensor 4 is better protected, and the signal acquisition effect of the sensor body 41 is better, thereby better realizing the functions of weighing and force analysis. A gap is left between the sensor body 41 and the support plate 42, which allows the sensor body 41 to automatically reset better. The reset effect is best when the gap between the sensor body 41 and the support plate 42 is in the range of 1 mm to 1.5 mm; when the cantilever sensor 4 is subjected to vertical and horizontal impact forces from the cover plate 3, the sensor body 41 can accurately reset due to the reasonable gap. At the same time, the support plate 42 is horizontally installed on the base plate 2, which improves the measurement effect of the cantilever sensor 4. Since each base plate 2 is equipped with two cantilever sensors 4, when the cantilever sensors 4 collect different signals, the cantilever sensors 4 and the control panel 5 can cooperate to achieve two different functions. The cantilever sensors 4 and the control panel 5 are electrically connected, and through data conversion, the weight of the goods placed on the horizontal cover plate 3 can be directly measured. At the same time, the cantilever sensors 4 are distributed left and right, so the control panel 5 can analyze the force state of one side of the base plate 2, thereby analyzing the off-center load state of the goods on the horizontal cover plate 3. The control panel 5 is initially set with a preset off-center load value. When the actual off-center load value of the goods is greater than the preset off-center load value, the drive device 8 and the hydraulic lifting assembly 11 automatically stop working, making it safer and more reliable for users. The sensor body 41 and the support plate 42 are fixed by fastening screws 43, which facilitates installation and prevents the sensor body 41 from shaking, resulting in higher detection accuracy. An adjustable height contact 44 is provided on the sensor body 41. The vertical position of the contact 44 can be adjusted relative to the horizontal cover plate 3, improving versatility.

[0021] When the hydraulic lifting assembly 11 is not raised, the drive unit 8 operates to drive the drive wheel 83 to rotate, thus driving the entire transport vehicle to move. When loaded with goods, the goods are often placed on the material frame. Here, it is necessary to lift the main frame through the hydraulic lifting assembly 11, so that the material frame is lifted off the ground. Since the rolling wheel 93 on the linkage assembly 9 is still in contact with the ground at this time, the drive unit 8 can drive the entire transport vehicle to move after being lifted. When the hydraulic lifting assembly 11 controls the lifting rod 111 to rise, the main frame 1 rises as a whole. When the main frame 1 rises, it causes the end of the swing arm 103 away from the main support 81 to rise. When the swing arm 103 rises, it causes the transmission body 101 to rotate. When the transmission body 101 is in motion, the end of the transmission body 101 that is hinged to the long rod body 91 will push the long rod body 91 to move in the direction of the arc part 6. When the long rod body 91 moves, it will push the roller seat 92 to rotate. When the roller seat 92 rotates, it will cause the rolling wheel 93 to sink, so that the rolling wheel 93 is always in contact with the ground. Similarly, when the lifting rod 111 on the hydraulic lifting assembly 11 extends and resets, the swing arm 103 rotates and resets, so the rolling wheel 93 also automatically resets to the initial state. The material box will automatically descend from the high position to the low position, and the goods handling is completed.

[0022] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A signal acquisition device for use on an electric pallet truck, comprising a main frame (1) provided with a bottom plate (2) fixedly connected thereto, characterized in that, The base plates (2) are arranged in pairs; a horizontal cover plate (3) is installed on the base plate (2), and a number of symmetrically distributed cantilever sensors (4) are provided between the horizontal cover plate (3) and the base plate (2); a control panel (5) is also provided on the main frame (1), and the control panel (5) is electrically connected to each of the cantilever sensors (4); the head of the base plate (2) is provided with an arc part (6), and the arc part (6) is provided to partially surround the head of the horizontal cover plate (3), and the outer contour of the arc part (6) is adapted to the outer contour of the horizontal cover plate (3).

2. The signal acquisition device for use on an electric lift truck of claim 1 wherein, The base plate (2) is provided with a mounting groove (7), and the horizontal cover plate (3) is installed above the mounting groove (7) and the horizontal cover plate (3) covers the mounting groove (7); the base plates (2) are arranged in pairs, and each mounting groove (7) is provided with a cantilever sensor (4) arranged in pairs.

3. The signal acquisition device for use on an electric lift truck of claim 2 wherein, The cantilever sensors (4) are symmetrically arranged in the mounting grooves (7) on the left and right sides, and each cantilever sensor (4) is electrically connected to the control panel (5).

4. The signal acquisition device for use on an electric lift truck of claim 3 wherein, The cantilever sensor (4) includes a sensor body (41) and a support plate (42). The sensor body (41) and the support plate (42) are arranged side by side. A fastening screw (43) for fixing the sensor body (41), the support plate (42) and the base plate (2) is provided between them. The fastening screw (43) passes through the sensor body (41) and the support plate (42) in sequence, and the fastening screw (43) extends to the base plate (2). A gap is left between the sensor body (41) and the support plate (42).

5. The signal acquisition device for use on an electric lift truck of claim 4 wherein, The support plate (42) is horizontally mounted on the base plate (2), and the sensor body (41) is provided with a contact (44) that is threadedly connected to it; there is a gap between the end of the sensor body (41) and the support plate (42) near the contact (44), and the size of the gap is between 1 mm and 1.5 mm; when the cantilever sensor (4) is mounted on the base plate (2), the top end face of the contact (44) is parallel to the upper end face of the horizontal cover plate (3).

6. The signal acquisition device for use on an electric lift truck of claim 2 wherein, The head of the base plate (2) has an arc portion (6), which partially surrounds the head of the horizontal cover plate (3); the cantilever sensor (4) is spaced apart from the arc portion (6).

7. The signal acquisition device for use on a motorized lift truck of claim 1 wherein, A drive device (8) is provided on the rear side of the main frame (1), a connecting rod assembly (9) is provided between the main frame (1) and the base plate (2), and a transmission assembly (10) is provided between the connecting rod assembly (9) and the drive device (8); the drive device (8) includes a main support (81), a motor support (82) is provided on the main support (81) and rotatably connected thereto, and a drive wheel (83) is provided on the motor support (82) and rotatably connected thereto; a hydraulic lifting assembly (11) is provided above the main support (81) and rotatably connected thereto, the hydraulic lifting assembly (11) includes a lifting rod (111), the end of the lifting rod (111) is rotatably connected to the main frame (1); the drive device (8) and the hydraulic lifting assembly (11) are both electrically connected to the control panel (5).

8. The signal acquisition device for use on an electric lift truck of claim 7 wherein, The linkage assembly (9) includes a long rod body (91), a roller seat (92), and a pair of rolling wheels (93). The linkage assemblies (9) are arranged in pairs, and each linkage assembly (9) is installed in each base plate (2). The transmission assembly (10) includes a transmission component body (101), which is rotatably connected to the main frame (1). One end of the long rod body (91) is hinged to the roller seat (92), and the other end of the long rod body (91) is hinged to the transmission component body (101). The roller seat (92) is rotatably connected to the base plate (2), and the roller seat (92) is provided with a rolling wheel (93) rotatably connected to it.

9. The signal acquisition device for use on an electric lift truck of claim 7 wherein, The transmission assembly (10) includes a transmission body (101), a connecting pin (102), and a pair of swing arms (103); the connecting pin (102) is rotatably connected to the main frame (1), and a retaining ring (104) is installed at the end of the connecting pin (102); the transmission body (101) is sleeved on the outer layer of the connecting pin (102), and the transmission body (101) can rotate relative to the connecting pin (102); both ends of the transmission body (101) are adjacent to the inner wall of the main frame (1), and a swing arm (103) is fixedly installed on the transmission body (101), and the end of the swing arm (103) away from the transmission body (101) is hinged to the main bracket (81).

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