Portable electric grab bucket

Abstract

The invention provides a portable electric grab bucket, and relates to the technical field of grab buckets, the portable electric grab bucket comprises a moving mechanism, the upper end of the moving mechanism is connected with a rotating disc through a thread assembly, the rotating disc is connected with a driving mechanism, the upper end of the rotating disc is fixedly provided with a supporting frame, and the front end of the supporting frame is fixedly connected with the rear end of the left side of a mounting frame; an output shaft of the first motor is fixedly connected with a first gear, a lifting groove in the right end of the supporting frame is slidably connected with the left end of a lifting block, the upper side of the lifting block is connected with a grab bucket mechanism through a mechanical arm mechanism, a first rack at the right end of the lifting block is meshed with the first gear, and the first gear is meshed with a second rack at the left end of a limiting frame. The lifting block is distributed on the left side of the first gear, and the limiting frame is distributed on the right side of the first gear, so that the purpose of controlling the grab bucket mechanism to rotate along the plane, move up and down and move along the horizontal plane is achieved, the grab bucket can be freely adjusted for use in narrow-space and complex-terrain places, and the grab bucket can be conveniently and efficiently adapted to different working occasions.

Description

Technical Field

[0001] The invention relates to the technical field of grab buckets, in particular to a portable electric grab bucket. Background Art

[0002] In traditional grab equipment, larger machines are usually required for support and operation, such as cranes and tower cranes. These devices are not convenient to use in places with narrow space and complex terrain. Traditional grab equipment generally relies on manual operation or requires more complex mechanical devices. It is not portable and efficient enough and is difficult to adapt to different work occasions.

[0003] Therefore, in view of the above situation, there is an urgent need to develop a portable electric grab to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The invention provides a portable electric grab bucket to solve the defects in the prior art.

[0005] The present invention provides a portable electric grab bucket, comprising: a moving mechanism, a mechanical arm mechanism is arranged on the moving mechanism, and a grab bucket mechanism is arranged on the mechanical arm mechanism.

[0006] Preferably, the upper end of the moving mechanism is connected to a rotating disk, the rotating disk is connected to a driving mechanism arranged in the moving mechanism, a support frame is fixedly provided on the upper end of the rotating disk, the front end of the support frame is fixedly connected to the left rear end of the mounting frame, the right end of the mounting frame is fixedly connected to motor 1, the output shaft of motor 1 is fixedly connected to gear 1, the lifting slot at the right end of the support frame is slidably connected to the left end of the lifting block, the upper side of the lifting block is connected to the grab mechanism through a mechanical arm mechanism, the rack 1 at the right end of the lifting block is meshed with gear 1, a limiting frame is fixedly provided on the rotating disk, gear 1 is meshed with rack 2 at the left end of the limiting frame, the lifting blocks are distributed on the left side of gear 1, and the limiting frames are distributed on the right side of gear 1.

[0007] Preferably, the mechanical arm mechanism includes a rotating rod 1 and a rotating rod 2, both of which are rotatably connected to the front end of the lifting block, and a driving shaft is rotatably provided between the rotating rod 2 and the lifting block, and the driving shaft is fixedly connected to the output shaft of the driving motor, and the driving motor is fixedly arranged at the rear end of the lifting block, and the side of the rotating rod 1 away from the lifting block is rotatably connected to the upper side of the rear end of the L-shaped mounting plate, and the side of the rotating rod 2 away from the lifting block is rotatably connected to the lower side of the rear end of the L-shaped mounting plate, and a rotating shaft 1 and a rotating shaft 2 are rotatably provided between the lower side of the rear end of the L-shaped mounting plate and the front end of the mounting plate 1, the rotating shaft 1 is rotatably connected to the rotating rod 2, and the middle part of the rotating shaft 2 is connected to the rotating rod 3 The motor is fixedly connected, the rear part of the rotating shaft two passes through the mounting plate one and is fixedly connected to the output shaft of the motor three, the rotating rod three is arranged between the lower side of the rear end of the L-shaped mounting plate and the front end of the mounting plate one, the motor three is fixedly arranged at the rear end of the mounting plate one, the side of the rotating rod three away from the mounting plate one is rotatably connected to the front end of the mounting plate two, a rotating rod four is rotatably provided between the front end of the mounting plate one and the front end of the mounting plate two, and a rotating shaft three is rotatably provided between the rotating rod four and the front end of the mounting plate two, the mounting shell is arranged on the front side of the rotating rod four, and the mounting shell is fixedly connected to the rotating shaft three, the rotating shaft three is fixedly connected to the output shaft of the motor four, and the motor four is fixedly arranged at the rear end of the mounting plate two.

[0008] Preferably, the grab mechanism includes a limit rail, the limit rail and a plurality of electric telescopic rods are fixedly arranged at the bottom of the mounting shell, a limit sleeve is sleeved on the limit rail, the telescopic end of the electric telescopic rod is fixed to the top of the limit sleeve, a fixing tube is fixedly arranged at the bottom of the limit rail, fixing plates are fixedly arranged at both ends of the fixing tube, two half bucket bodies are respectively arranged on both sides of the fixing plate through a rotating shaft, a limit shaft is rotatably arranged in the half bucket body, a limit seat is fixedly arranged on both sides of the limit sleeve facing the two half bucket bodies, the limit seat is hinged to one end of the limit plate, and the limit shaft is hinged to the other end of the limit plate.

[0009] Preferably, it also includes:

[0010] An angle detection module, used to measure the angle between the half bucket and the vertical direction;

[0011] Pressure detection module 1, used to measure the pressure between the left half bucket and the rotating shaft inside it;

[0012] Pressure detection module 2 is used to measure the pressure between the right half bucket and the rotating shaft inside it;

[0013] A calculation module 1 is used to calculate the actual safety utilization factor of the grab bucket based on the angle between the half bucket body and the vertical direction;

[0014] An alarm module, used for issuing an alarm;

[0015] A processing module, used for comparing the actual safety utilization factor of the grab bucket obtained by the calculation module 1 with the rated safety utilization factor of the grab bucket;

[0016] Control module, when the actual safety use factor of the grab is less than the rated safety use factor of the grab, the control alarm module will sound an alarm and control the grab to stop working. When the actual safety use factor of the grab is greater than or equal to the rated safety use factor of the grab, the grab will work normally.

[0017] Preferably, the calculation module 1 calculates based on the following formula 1:

[0018]

[0019] Among them, K is the actual safety use coefficient of the grab bucket, V is the volume inside the two half buckets, ρ is the density of the grabbed material, g is the acceleration of gravity, A is the maximum opening area at the bottom of the two half buckets, σ ​​is the maximum load-bearing load of the grab bucket material, C is the material coefficient used by the grab bucket, cos is cosine, θ is the angle between the half bucket body and the vertical direction, G is the weight of the grab bucket, ln is the natural logarithm, L1 is the length of the mounting plate one, L2 is the length of the rotating rod one, L3 is the length of the rotating rod four, π is the pi, F1 is the pressure on the left half bucket body, F2 is the pressure on the right half bucket body, and n is the maximum width inside the half bucket body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention.

[0022] Reference numerals:

[0023] 1. Moving mechanism; 2. Rotating plate; 3. Gear 2; 4. Lifting slot; 5. Mounting frame; 6. Support frame; 7. Motor 1; 8. Gear 1; 9. Limiting frame; 10. Lifting block; 11. Mechanical arm mechanism; 12. Rotating rod 2; 13. L-shaped mounting plate; 14. Mounting plate 1; 15. Rotating rod 3; 16. Rotating rod 1; 17. Rotating shaft 2; 18. Rotating rod 4; 19. Mounting plate 2; 20. Mounting shell; 21. Grab bucket mechanism; 22. Limiting rail; 23. Electric telescopic rod; 24. Limiting sleeve; 25. Fixed pipe; 26. Fixed plate; 27. Half bucket body; 28. Limiting shaft; 29. ​​Limiting seat; 30. Limiting plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] The present invention provides the following embodiments

[0027] Example 1

[0028] The embodiment of the present invention provides a portable electric grab bucket, such as Figure 1 As shown, it includes: a moving mechanism 1, a mechanical arm mechanism 11 is arranged on the moving mechanism 1, a grab mechanism 21 is arranged on the mechanical arm mechanism 11, the upper end of the moving mechanism 1 is connected to the rotating disk 2, the rotating disk 2 is connected to the driving mechanism arranged in the moving mechanism 1, a support frame 6 is fixedly arranged on the upper end of the rotating disk 2, the front end of the support frame 6 is fixedly connected to the left rear end of the mounting frame 5, the right end of the mounting frame 5 is fixedly connected to the motor 7, the output shaft of the motor 7 is fixedly connected to the gear 8, the lifting slot 4 at the right end of the support frame 6 is slidably connected to the left end of the lifting block 10, the upper side of the lifting block 10 is connected to the grab mechanism 21 through the mechanical arm mechanism 11, the rack 1 at the right end of the lifting block 10 is meshed with the gear 8, a limiting frame 9 is fixedly arranged on the rotating disk 2, the gear 8 is meshed with the rack 2 at the left end of the limiting frame 9, the lifting blocks 10 are distributed on the left side of the gear 8, and the limiting frames 9 are distributed on the right side of the gear 8.

[0029] The working principle and beneficial effects of the above technical solution are as follows: the mobile mechanism 1 adopts a crawler structure such as CN110155198A, which discloses a crawler vehicle, and the driving mechanism is an existing device arranged in the mobile mechanism 1, and the driving mechanism is used to drive the rotating disk 2 to rotate, the rotating disk 2 drives the support frame 6 to rotate, the support frame 6 drives the mechanical arm mechanism 11 to rotate, and the mechanical arm mechanism 11 drives the grab mechanism 21 to move, thereby achieving the purpose of controlling the grab mechanism 21 and the mechanical arm mechanism 11 to rotate in the horizontal plane, and the mechanical arm mechanism 11 can extend in the horizontal direction, thereby driving the grab mechanism 21 to move in the horizontal direction, and the grab mechanism The mechanism 21 can grab the target object. When the motor 7 is working, it can drive the gear 8 to rotate. When the gear 8 rotates, it will drive the rack 1 and the rack 2 to move toward each other, so that the lifting block 10 and the limit frame 9 move toward each other. When the lifting block 10 slides up and down along the lifting groove 4, it can drive the mechanical arm mechanism 11 and the grab mechanism 21 to slide up and down, thereby achieving the purpose of controlling the grab mechanism 21 to rotate along the plane, move up and down, and move along the horizontal plane, making it convenient for the grab mechanism 21 to grab materials, and making it convenient for the equipment to freely turn the grab for use in places with narrow space and complex terrain. It can be portable and efficient to adapt to different working occasions.

[0030] Example 2

[0031] On the basis of Example 1, Figure 1 As shown, the mechanical arm mechanism 11 includes a rotating rod 16 and a rotating rod 2 12, both of which are rotatably connected to the front end of the lifting block 10, and a driving shaft is rotatably provided between the rotating rod 2 12 and the lifting block 10, and the driving shaft is fixedly connected to the output shaft of the driving motor, and the driving motor is fixedly arranged at the rear end of the lifting block 10, and the side of the rotating rod 16 away from the lifting block 10 is rotatably connected to the upper side of the rear end of the L-shaped mounting plate 13, and the side of the rotating rod 2 12 away from the lifting block 10 is rotatably connected to the lower side of the rear end of the L-shaped mounting plate 13, and a rotating shaft 1 and a rotating shaft 2 17 are rotatably provided between the lower side of the rear end of the L-shaped mounting plate 13 and the front end of the mounting plate 14, and the rotating shaft 1 is rotatably connected to the rotating rod 2 12, and the middle part of the rotating shaft 2 17 is connected to the rotating rod The rear part of the rotating shaft 2 17 passes through the mounting plate 14 and is fixedly connected to the output shaft of the motor 3. The rotating rod 3 15 is arranged between the lower side of the rear end of the L-shaped mounting plate 13 and the front end of the mounting plate 14. The motor 3 is fixedly arranged at the rear end of the mounting plate 14. The rotating rod 3 15 is rotatably connected to the front end of the mounting plate 2 19 on the side away from the mounting plate 14. A rotating rod 4 18 is rotatably provided between the front end of the mounting plate 14 and the front end of the mounting plate 2 19, and a rotating shaft 3 is rotatably provided between the rotating rod 4 18 and the front end of the mounting plate 2 19. The mounting shell 20 is arranged on the front side of the rotating rod 4 18, and the mounting shell 20 is fixedly connected to the rotating shaft 3. The rotating shaft 3 is fixedly connected to the output shaft of the motor 4, and the motor 4 is fixedly arranged at the rear end of the mounting plate 2 19.

[0032] The working principle and beneficial effects of the above technical solution are as follows: when the driving mechanism is working, it drives the gear 2 3 to rotate, and when the gear 2 3 rotates, it drives the gear ring of the rotating disk 2 to rotate, thereby achieving the purpose of controlling the rotating disk 2 to rotate along the horizontal plane. When the driving motor is working, it drives the driving shaft to rotate, and the driving shaft drives the rotating rod 2 12 to rotate. When the rotating rod 2 12 rotates, it drives the L-shaped mounting plate 13 to rotate. During this process, the rotating rod 16 rotates. The setting of the rotating rod 16 has a guiding connection effect on the rotation of the L-shaped mounting plate 13, which is used to ensure that the L-shaped mounting plate 13 always remains in a horizontal state during the rotation process, so that the mounting plate 14 always remains in a horizontal state during the rotation process. The rotating rod 2 12 and the rotating rod 16 can be used as large arms. When the motor 3 works, it drives the rotating shaft 2 17 to rotate, and the rotating shaft 2 17 drives the rotating rod 3 15 to rotate. When the rotating rod 3 15 rotates, it drives the mounting plate 2 19 to rotate. During this process, the rotating rod 4 18 rotates. The setting of the rotating rod 4 18 has a guiding connection effect on the rotation of the mounting plate 2 19, which is used to ensure that the mounting plate 2 19 always maintains a horizontal state during the rotation process. The rotating rod 3 15 and the rotating rod 4 18 serve as small arms. When the rotating rod 3 15 and the rotating rod 4 18 rotate to a horizontal state, the small arms are unfolded, thereby making the mechanical arm mechanism 11 unfold. By controlling the driving motor and the motor 3 to work, the purpose of controlling the mechanical arm mechanism 11 to extend in the horizontal direction can be achieved.

[0033] Example 3

[0034] On the basis of Example 2, Figure 1 As shown, the grab mechanism 21 includes a limit rail 22, and the limit rail 22 and a plurality of electric telescopic rods 23 are fixedly arranged at the bottom of the mounting shell 20. A limit sleeve 24 is sleeved on the limit rail 22, and the telescopic end of the electric telescopic rod 23 is fixed to the top of the limit sleeve 24. A fixing tube 25 is fixedly arranged at the bottom of the limit rail 22, and fixing plates 26 are fixedly arranged at both ends of the fixing tube 25. Two half bucket bodies 27 are respectively arranged on both sides of the fixing plate 26 through a rotating shaft, and a limit shaft 28 is rotatably arranged in the half bucket body 27. The limit sleeve 24 is fixedly provided with a limit seat 29 on both sides of the two half bucket bodies 27, and the limit seat 29 is hinged to one end of the limit plate 30, and the limit shaft 28 is hinged to the other end of the limit plate 30.

[0035] The working principle and beneficial effects of the above technical solution are as follows: the limiting rail 22 of the mounting shell 20 and the bottom of the plurality of electric telescopic rods 23 are fixed, the limiting rail 22 limits the limiting sleeve 24, the telescopic end of the electric telescopic rod 23 fixes the limiting sleeve 24, so that the limiting sleeve 24 moves up and down on the limiting rail 22, the bottom of the limiting rail 22 fixes the fixing tube 25, the two ends of the fixing tube 25 fix the fixing plate 26, the fixing plate 26 fixes the two rotating shafts, the two rotating shafts respectively rotatably support the two half bucket bodies 27, the two limiting shafts 28 are respectively fixed on the two half bucket bodies 27, the two ends of the limiting plate 30 are respectively connected with the limiting sleeve 24 and the limiting shaft 28, the opening and closing of the two half bucket bodies 27 are adjusted by controlling the extension of the telescopic ends of the plurality of electric telescopic rods 23, so as to control the grab bucket to grab the target object.

[0036] Example 4

[0037] On the basis of Example 3, the invention further includes:

[0038] An angle detection module, used to measure the angle between the half bucket body 27 and the vertical direction;

[0039] Pressure detection module 1, used to measure the pressure between the left half bucket body 27 and the rotating shaft therein;

[0040] Pressure detection module 2, used to measure the pressure between the right half bucket 27 and the rotating shaft inside it;

[0041] Calculation module 1, used to calculate the actual safety factor of the grab bucket based on the angle between the half bucket body 27 and the vertical direction;

[0042] An alarm module, used for issuing an alarm;

[0043] A processing module, used for comparing the actual safety utilization factor of the grab bucket obtained by the calculation module 1 with the rated safety utilization factor of the grab bucket;

[0044] Control module, when the actual safety use factor of the grab is less than the rated safety use factor of the grab, the control alarm module will sound an alarm and control the grab to stop working. When the actual safety use factor of the grab is greater than or equal to the rated safety use factor of the grab, the grab will work normally.

[0045] The working principle and beneficial effects of the above technical solution are as follows: the angle detection module measures the angle between the half bucket body 27 and the vertical direction, the pressure detection module 1 measures the pressure between the left half bucket body 27 and the rotating shaft therein, the pressure detection module 2 measures the pressure between the right half bucket body 27 and the rotating shaft therein, the calculation module 1 calculates the actual safety use coefficient of the grab bucket based on the angle between the half bucket body 27 and the vertical direction, the alarm module is used to issue an alarm, and the processing module compares the actual safety use coefficient of the grab bucket obtained by the calculation module 1 with the rated safety use coefficient of the grab bucket. When the actual safety use coefficient of the grab bucket is less than the rated safety use coefficient of the grab bucket, the control module controls the alarm module to issue an alarm and controls the grab bucket to stop working. When the actual safety use coefficient of the grab bucket is greater than or equal to the rated safety use coefficient of the grab bucket, the grab bucket works normally.

[0046] Example 5

[0047] Based on Example 4, the calculation module 1 calculates based on the following formula 1:

[0048]

[0049] Among them, K is the actual safety use coefficient of the grab bucket, V is the volume inside the two half bucket bodies 27, ρ is the density of the grabbed material, g is the gravitational acceleration, A is the maximum opening area at the bottom of the two half bucket bodies 27, σ is the maximum load-bearing load of the grab bucket material, C is the material coefficient used by the grab bucket, cos is cosine, θ is the angle between the half bucket body 27 and the vertical direction, G is the weight of the grab bucket, ln is the natural logarithm, L1 is the length of the mounting plate 14, L2 is the length of the rotating rod 16, L3 is the length of the rotating rod 18, π is pi, F1 is the pressure on the left half bucket body 27, F2 is the pressure on the right half bucket body 27, and n is the maximum width inside the half bucket body 27.

[0050] The working principle and beneficial effects of the above technical solution are: The actual safety use coefficient of the grab is calculated. When the actual safety use coefficient of the grab is less than the rated safety use coefficient of the grab, the control module controls the alarm module to sound an alarm and control the grab to stop working. When the actual safety use coefficient of the grab is greater than or equal to the rated safety use coefficient of the grab, the grab works normally.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Portable electric grab, characterized in that: include: A mobile mechanism (1), wherein a mechanical arm mechanism (11) is arranged on the mobile mechanism (1), and a grabbing bucket mechanism (21) is arranged on the mechanical arm mechanism (11).

2. The portable electric grab bucket according to claim 1, characterized in that: The upper end of the mobile mechanism (1) is connected to the rotating disk (2), the rotating disk (2) is connected to the driving mechanism arranged in the mobile mechanism (1), the upper end of the rotating disk (2) is fixedly provided with a support frame (6), the front end of the support frame (6) is fixedly connected to the left rear end of the mounting frame (5), the right end of the mounting frame (5) is fixedly connected to the motor 1 (7), the output shaft of the motor 1 (7) is fixedly connected to the gear 1 (8), the lifting groove (4) at the right end of the support frame (6) is slidably connected to the left end of the lifting block (10), the upper side of the lifting block (10) is connected to the grab bucket mechanism (21) through the mechanical arm mechanism (11), the rack 1 at the right end of the lifting block (10) is meshed with the gear 1 (8), a limiting frame (9) is fixedly provided on the rotating disk (2), the gear 1 (8) is meshed with the rack 2 at the left end of the limiting frame (9), the lifting block (10) is distributed on the left side of the gear 1 (8), and the limiting frame (9) is distributed on the right side of the gear 1 (8).

3. The portable electric grab bucket according to claim 2, characterized in that: The mechanical arm mechanism (11) comprises a rotating rod 1 (16) and a rotating rod 2 (12), both of which are rotatably connected to the front end of the lifting block (10), and a driving shaft is rotatably provided between the rotating rod 2 (12) and the lifting block (10), and the driving shaft is fixedly connected to the output shaft of the driving motor, and the driving motor is fixedly arranged at the rear end of the lifting block (10), and the side of the rotating rod 1 (16) away from the lifting block (10) is rotatably connected to the upper side of the rear end of the L-shaped mounting plate (13), and the side of the rotating rod 2 (12) away from the lifting block (10) is rotatably connected to the lower side of the rear end of the L-shaped mounting plate (13), and a rotating shaft 1 and a rotating shaft 2 (17) are rotatably provided between the lower side of the rear end of the L-shaped mounting plate (13) and the front end of the mounting plate 1 (14), and the rotating shaft 1 is rotatably connected to the rotating rod 2 (12), and the middle part of the rotating shaft 2 (17) is connected to the rotating rod 3 The rear part of the rotating shaft 2 (17) passes through the mounting plate 1 (14) and is fixedly connected to the output shaft of the motor 3. The rotating rod 3 (15) is arranged between the lower side of the rear end of the L-shaped mounting plate (13) and the front end of the mounting plate 1 (14). The motor 3 is fixedly arranged at the rear end of the mounting plate 1 (14). The side of the rotating rod 3 (15) away from the mounting plate 1 (14) is rotatably connected to the front end of the mounting plate 2 (19). A rotating rod 4 (18) is rotatably arranged between the front end of the mounting plate 1 (14) and the front end of the mounting plate 2 (19). A rotating shaft 3 is rotatably arranged between the rotating rod 4 (18) and the front end of the mounting plate 2 (19). The mounting shell (20) is arranged at the front side of the rotating rod 4 (18). The mounting shell (20) is fixedly connected to the rotating shaft 3. The rotating shaft 3 is fixedly connected to the output shaft of the motor 4. The motor 4 is fixedly arranged at the rear end of the mounting plate 2 (19).

4. The portable electric grab bucket according to claim 3, characterized in that: The grab mechanism (21) comprises a limit rail (22), the limit rail (22) and a plurality of electric telescopic rods (23) are fixedly arranged at the bottom of the mounting shell (20), a limit sleeve (24) is sleeved on the limit rail (22), the telescopic end of the electric telescopic rod (23) is fixed to the top of the limit sleeve (24), a fixed tube (25) is fixedly arranged at the bottom of the limit rail (22), fixed plates (26) are fixedly arranged at both ends of the fixed tube (25), two half bucket bodies (27) are respectively arranged on both sides of the fixed plate (26) through a rotating shaft, a limit shaft (28) is rotatably arranged in the half bucket body (27), a limit seat (29) is fixedly arranged on the limit sleeve (24) towards both sides of the two half bucket bodies (27), the limit seat (29) is hinged to one end of the limit plate (30), and the limit shaft (28) is hinged to the other end of the limit plate (30).

5. The portable electric grab bucket according to claim 4, characterized in that: Also includes: An angle detection module, used to measure the angle between the half bucket body (27) and the vertical direction; Pressure detection module 1, used to measure the pressure between the left half bucket body (27) and the rotating shaft therein; The second pressure detection module is used to measure the pressure between the right half bucket body (27) and the rotating shaft therein; A calculation module 1 is used to calculate the actual safety utilization factor of the grab bucket based on the angle between the half bucket body (27) and the vertical direction; An alarm module, used for issuing an alarm; A processing module, used for comparing the actual safety utilization factor of the grab bucket obtained by the calculation module 1 with the rated safety utilization factor of the grab bucket; Control module, when the actual safety use factor of the grab is less than the rated safety use factor of the grab, the control alarm module will sound an alarm and control the grab to stop working. When the actual safety use factor of the grab is greater than or equal to the rated safety use factor of the grab, the grab will work normally.

6. The portable electric grab bucket according to claim 5, characterized in that: The calculation module 1 calculates based on the following formula 1: Wherein, K is the actual safety coefficient of the grab bucket, V is the volume inside the two half bucket bodies (27), ρ is the density of the grabbed material, g is the acceleration of gravity, A is the maximum opening area at the bottom of the two half bucket bodies (27), σ is the maximum load-bearing load of the grab bucket material, C is the material coefficient used by the grab bucket, cos is cosine, θ is the angle between the half bucket body (27) and the vertical direction, G is the weight of the grab bucket, ln is the natural logarithm, L1 is the length of the mounting plate 1 (14), L2 is the length of the rotating rod 1 (16), L3 is the length of the rotating rod 4 (18), π is the circumference of a circle, F1 is the pressure on the left half bucket body (27), F2 is the pressure on the right half bucket body (27), and n is the maximum width inside the half bucket body (27).

Images