Paper roll clip

Abstract

The utility model discloses a roll paper clip which comprises a connecting plate, a supporting seat, an upper claw arm and a lower claw arm, the supporting seat is installed on the connecting plate, the upper claw arm and the lower claw arm are rotatably installed on the supporting seat, an upper hydraulic oil cylinder is arranged between the upper claw arm and the supporting seat, the upper hydraulic oil cylinder is provided with an upper pressure regulating valve, and the lower pressure regulating valve is provided with a lower pressure regulating valve. An upper hydraulic oil cylinder is arranged between the upper claw arm and the supporting seat and communicated with an upper oil pressure sensor, a lower hydraulic oil cylinder is arranged between the lower claw arm and the supporting seat and provided with a lower pressure adjusting valve, and the lower hydraulic oil cylinder is communicated with a lower oil pressure sensor. The utility model has the beneficial effects that the upper pressure regulating valve and the lower pressure regulating valve are controlled to respectively regulate the pressure of hydraulic oil in the upper hydraulic oil cylinder and the lower hydraulic oil cylinder, so that the goods with different softness degrees can be adapted, and the advantage of better applicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of forklift attachments, in particular to a paper roll clamp. Background Art

[0002] A forklift is a mechanical device used for handling, loading, unloading and stacking goods. It is often used in various factories and is suitable for short-distance cargo transportation. Forklift attachments are installed on the forklift, and the goods are clamped or lifted by the forklift attachments, so that the goods can be transported by the forklift. In order to facilitate the handling of different goods, it is often necessary to install different goods on the forklift.

[0003] The Chinese utility model patent with announcement number CN219409168U discloses a new wide-viewing field paper roll clamp, including a base plate, a drive assembly, a slewing bearing, a panel, a long clamp arm assembly, a short clamp arm assembly, a left clamp plate, a right clamp plate, a first drive mechanism, a second drive mechanism, a third drive mechanism and a fourth drive mechanism. The middle part of the back side of the left clamp plate is hinged to the free end of the short clamp arm assembly, the third drive mechanism is hinged on the short clamp arm assembly near the inner side of the hinge between the short clamp arm assembly and the left clamp plate, and the output shaft of the third drive mechanism is hinged to one end of the left clamp plate near the panel, the middle part of the back side of the right clamp plate is hinged to the free end of the long clamp arm assembly, the fourth drive mechanism is hinged on the long clamp arm assembly near the inner side of the hinge between the long clamp arm assembly and the right clamp plate, and the output shaft of the fourth drive mechanism is hinged to one end of the right clamp plate near the panel, and a concentric and same-diameter viewing opening is provided basically with the center of the panel to solve the problem of inflexible use of the existing paper roll clamp.

[0004] Since the paper roll clamp often needs to clamp different paper rolls, and different paper rolls have different softness, when the paper roll is relatively soft, a smaller clamping force needs to be used to prevent the paper roll from being damaged by the paper roll clamp; when the paper roll is relatively hard, a larger holding force needs to be used to prevent the paper roll from slipping off the paper roll clamp. The prior art cannot adjust the clamping force of the paper roll clamp, making the applicability of the paper roll clamp poor and unable to adapt to paper rolls of different softness. Therefore, the prior art paper roll clamp has a technical problem of poor applicability. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a paper roll clamp, which includes a connecting plate, a support seat, an upper claw arm and a lower claw arm, and the paper roll clamp has the advantage of good applicability.

[0006] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0007] A paper roll clamp comprises a connecting plate, a supporting seat, an upper claw arm and a lower claw arm, the supporting seat being mounted on the connecting plate, the upper claw arm and the lower claw arm being rotatably mounted on the supporting seat, an upper hydraulic cylinder being arranged between the upper claw arm and the supporting seat, the upper hydraulic cylinder being provided with an upper pressure regulating valve, the upper pressure regulating valve being electrically connected to a control module, the upper hydraulic cylinder being connected to an upper oil pressure sensor, the upper oil pressure sensor being electrically connected to the control module, the control module being electrically connected to an upper indicator light group, a lower hydraulic cylinder being arranged between the lower claw arm and the supporting seat, the lower hydraulic cylinder being provided with a lower pressure regulating valve, the lower hydraulic cylinder being connected to a lower oil pressure sensor, the lower pressure regulating valve and the lower oil pressure sensor being both electrically connected to the control module, and the control module being electrically connected to a lower indicator light group.

[0008] Through such an arrangement: controlling the upper pressure regulating valve and the lower pressure regulating valve to respectively adjust the pressure of the hydraulic oil in the upper hydraulic cylinder and the lower hydraulic cylinder, and adjusting the clamping force of the upper claw arm and the lower claw arm on the goods, it can adapt to goods of different softness, ensure that the upper claw arm and the lower claw arm clamp the goods and prevent the goods from being pinched, thereby achieving the advantage of better applicability.

[0009] Preferably, the upper indicator light group includes an upper low-voltage indicator light, an upper medium-voltage indicator light and an upper high-voltage indicator light, and the upper low-voltage indicator light, the upper medium-voltage indicator light and the upper high-voltage indicator light are electrically connected to the control module respectively, the upper low-voltage indicator light is installed on the upper claw arm, the upper medium-voltage indicator light is installed on the upper low-voltage indicator light, and the upper high-voltage indicator light is installed on the upper medium-voltage indicator light.

[0010] Such an arrangement makes it easy to check the clamping force applied by the upper claw arm on the cargo.

[0011] Preferably, the upper claw arm is fixedly connected to an upper green lamp cover covering an upper low-voltage indicator light, the upper green lamp cover is fixedly connected to an upper yellow lamp cover covering an upper medium-voltage indicator light, and the upper yellow lamp cover is fixedly connected to an upper red lamp cover covering an upper high-voltage indicator light.

[0012] Such an arrangement makes it easy to check the clamping force applied by the upper claw arm on the cargo.

[0013] Preferably, the lower indicator light group includes a lower low-pressure indicator light, a lower medium-pressure indicator light and a lower high-pressure indicator light, and the lower low-pressure indicator light, the lower medium-pressure indicator light and the lower high-pressure indicator light are electrically connected to the control module respectively, the lower low-pressure indicator light is installed on the lower claw arm, the lower medium-pressure indicator light is installed on the lower low-pressure indicator light, and the lower high-pressure indicator light is installed on the lower medium-pressure indicator light.

[0014] Such an arrangement makes it easy to check the clamping force applied by the lower claw arm on the cargo.

[0015] Preferably, the lower claw arm is fixedly connected to a lower green lamp cover covering the lower low-pressure indicator light, the lower green lamp cover is fixedly connected to a lower yellow lamp cover covering the lower medium-pressure indicator light, and the lower yellow lamp cover is fixedly connected to a lower red lamp cover covering the lower high-pressure indicator light.

[0016] Such an arrangement makes it easy to check the clamping force applied by the upper claw arm on the cargo.

[0017] Preferably, the support seat includes a main support plate and a secondary support plate, both of which are fixed to the connecting plate, the secondary support plate is fixedly connected to the middle part of the main support plate, and the upper claw arm and the lower claw arm are rotatably connected to the upper and lower ends of the secondary support plate respectively.

[0018] Through such an arrangement, the upper claw arm and the lower claw arm can bear the weight of the goods and clamp the goods.

[0019] Preferably, both ends of the upper hydraulic cylinder are rotatably connected to the upper end of the main support plate and the upper claw arm respectively, and both ends of the lower hydraulic cylinder are rotatably connected to the lower end of the main support plate and the lower claw arm respectively.

[0020] Through such an arrangement, the structural stability between the lower hydraulic cylinder, the lower claw arm and the support seat is ensured.

[0021] Preferably, an upper clamping plate is rotatably mounted on one end of the upper claw arm away from the support seat.

[0022] Through such an arrangement: the stability between the upper claw arm and the cargo is improved.

[0023] Preferably, a lower clamping plate is rotatably mounted on one end of the lower claw arm away from the support seat.

[0024] Through such an arrangement: the stability between the lower claw arm and the cargo is improved.

[0025] Preferably, the length of the upper claw arm is greater than the length of the lower claw arm.

[0026] Through such an arrangement, the paper roll can be clamped without moving the lower claw arm to the right under the paper roll, which makes it convenient to clamp the goods.

[0027] Compared with the prior art, the utility model has achieved beneficial technical effects:

[0028] When it is necessary to adjust the clamping force of the upper claw arm and the lower claw arm on the cargo, the control module controls the upper pressure regulating valve and the lower pressure regulating valve to respectively adjust the pressure of the hydraulic oil in the upper hydraulic cylinder and the lower hydraulic cylinder, thereby changing the thrust applied by the upper hydraulic cylinder and the lower hydraulic cylinder to the upper claw arm and the lower claw arm, thereby adjusting the clamping force of the upper claw arm and the lower claw arm on the cargo, and being able to adapt to cargo of different softness, ensuring that the upper claw arm and the lower claw arm clamp the cargo and preventing the cargo from being clamped, thereby achieving the advantage of better applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a paper roll clamp in an embodiment of the utility model;

[0030] Figure 2 It is a schematic diagram of the structure of the upper indicator light group and the lower indicator light group in the embodiment of the utility model;

[0031] Figure 3 It is a schematic diagram of the connection structure of the control module in the embodiment of the utility model.

[0032] The technical features indicated by the reference numerals are as follows:

[0033] 11. Connecting plate; 12. Support seat; 13. Main supporting plate; 14. Auxiliary supporting plate; 21. Upper claw arm; 22. Upper hydraulic cylinder; 23. Upper clamping plate; 24. Upper low-pressure indicator light; 25. Upper medium-pressure indicator light; 26. Upper high-pressure indicator light; 27. Upper green lamp cover; 28. Upper yellow lamp cover; 29. ​​Upper red lamp cover; 31. Lower claw arm; 32. Lower hydraulic cylinder; 33. Lower clamping plate; 34. Lower low-pressure indicator light; 35. Lower medium-pressure indicator light; 36. Lower high-pressure indicator light; 37. Lower green lamp cover; 38. Lower yellow lamp cover; 39. Lower red lamp cover; 41. Control module; 42. Upper pressure regulating valve; 43. Lower pressure regulating valve; 44. Upper oil pressure sensor; 45. Lower oil pressure sensor. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments, but the scope of protection claimed in the utility model is not limited to the following specific embodiments.

[0035] refer to Figure 1 A paper roll clamp includes a connecting plate 11, a support seat 12, an upper claw arm 21 and a lower claw arm 31. The connecting plate 11 is used to connect with a forklift, the support seat 12 is installed on the connecting plate 11, the support seat 12 includes a main support plate 13 and a secondary support plate 14, the main support plate 13 and the secondary support plate 14 are both fixed to the connecting plate 11, the secondary support plate 14 is fixedly connected to the middle of the main support plate 13, and the upper claw arm 21 and the lower claw arm 31 are rotatably connected to the upper and lower ends of the secondary support plate 14 respectively.

[0036] refer to Figure 1 and Figure 2 The upper claw arm 21 and the lower claw arm 31 are rotatably mounted on the support base 12, an upper hydraulic cylinder 22 is provided between the upper claw arm 21 and the support base 12, and a lower hydraulic cylinder 32 is provided between the lower claw arm 31 and the support base 12. The two ends of the upper hydraulic cylinder 22 are rotatably connected to the upper end of the main support plate 13 and the upper claw arm 21, respectively, and the two ends of the lower hydraulic cylinder 32 are rotatably connected to the lower end of the main support plate 13 and the lower claw arm 31, respectively. An upper clamping plate 23 is rotatably mounted on one end of the upper claw arm 21 away from the support base 12. A lower clamping plate 33 is rotatably mounted on one end of the lower claw arm 31 away from the support base 12. The length of the upper claw arm 21 is greater than the length of the lower claw arm 31. The upper hydraulic cylinder 22 and the lower hydraulic cylinder 32 respectively drive the upper claw arm 21 and the lower claw arm 31 to rotate on the support seat 12, and the upper claw arm 21 and the lower claw arm 31 approach each other, so that the goods located between the upper claw arm 21 and the lower claw arm 31 can be clamped, thereby realizing the function of clamping the goods.

[0037] refer to Figure 2 and Figure 3 The upper hydraulic cylinder 22 is provided with an upper pressure regulating valve 42, which is electrically connected to a control module 41, and the upper hydraulic cylinder 22 is connected to an upper oil pressure sensor 44, which is electrically connected to the control module 41, and the control module 41 is electrically connected to an upper indicator light group, and the lower hydraulic cylinder 32 is provided with a lower pressure regulating valve 43, which is connected to a lower oil pressure sensor 45, and the lower pressure regulating valve 43 and the lower oil pressure sensor 45 are both electrically connected to the control module 41, and the control module 41 is electrically connected to a lower indicator light group. The control module 41 is a controller installed on the forklift, and the upper pressure regulating valve 42 and the lower pressure regulating valve 43 are both electronic regulating valves.

[0038] The upper indicator light group includes an upper low-voltage indicator light 24, an upper medium-voltage indicator light 25, and an upper high-voltage indicator light 26. The upper low-voltage indicator light 24, the upper medium-voltage indicator light 25, and the upper high-voltage indicator light 26 are electrically connected to the control module 41, respectively. The upper low-voltage indicator light 24 is mounted on the upper claw arm 21, the upper medium-voltage indicator light 25 is mounted on the upper low-voltage indicator light 24, and the upper high-voltage indicator light 26 is mounted on the upper medium-voltage indicator light 25. The upper claw arm 21 is fixedly connected with an upper green lamp cover 27 covering the upper low-voltage indicator light 24, the upper green lamp cover 27 is fixedly connected with an upper yellow lamp cover 28 covering the upper medium-voltage indicator light 25, and the upper yellow lamp cover 28 is fixedly connected with an upper red lamp cover 29 covering the upper high-voltage indicator light 26.

[0039] The lower indicator light group includes a lower low-pressure indicator light 34, a lower medium-pressure indicator light 35 and a lower high-pressure indicator light 36. The lower low-pressure indicator light 34, the lower medium-pressure indicator light 35 and the lower high-pressure indicator light 36 are electrically connected to the control module 41 respectively. The lower low-pressure indicator light 34 is mounted on the lower claw arm 31, the lower medium-pressure indicator light 35 is mounted on the lower low-pressure indicator light 34, and the lower high-pressure indicator light 36 is mounted on the lower medium-pressure indicator light 35. The lower claw arm 31 is fixedly connected with a lower green lamp cover 37 covering the lower low-pressure indicator light 34, the lower green lamp cover 37 is fixedly connected with a lower yellow lamp cover 38 covering the lower medium-pressure indicator light 35, and the lower yellow lamp cover 38 is fixedly connected with a lower red lamp cover 39 covering the lower high-pressure indicator light 36.

[0040] This embodiment has the following advantages:

[0041] When it is necessary to adjust the clamping force of the upper claw arm 21 and the lower claw arm 31 on the cargo, the control module 41 controls the upper pressure regulating valve 42 and the lower pressure regulating valve 43 to respectively adjust the pressure of the hydraulic oil in the upper hydraulic cylinder 22 and the lower hydraulic cylinder 32, thereby changing the thrust applied by the upper hydraulic cylinder 22 and the lower hydraulic cylinder 32 to the upper claw arm 21 and the lower claw arm 31, thereby adjusting the clamping force of the upper claw arm 21 and the lower claw arm 31 on the cargo, and being able to adapt to cargoes of different softness, ensuring that the upper claw arm 21 and the lower claw arm 31 clamp the cargoes and preventing the cargoes from being clamped, thereby achieving the advantage of better applicability.

[0042] The control module 41 is preset with an upper low pressure threshold and an upper high pressure threshold. When the upper oil pressure sensor 44 detects that the oil pressure in the upper hydraulic cylinder 22 is lower than the upper low pressure threshold, the control module 41 controls the upper low pressure indicator 24 to light up; when the upper oil pressure sensor 44 detects that the oil pressure in the upper hydraulic cylinder 22 is higher than the upper low pressure threshold and lower than the upper high pressure threshold, the control module 41 controls the upper medium pressure indicator 25 to light up; when the upper oil pressure sensor 44 detects that the oil pressure in the upper hydraulic cylinder 22 is higher than the upper high pressure threshold, the control module 41 controls the upper high pressure indicator 26 to light up. By observing the light emission of different lights in the upper indicator light group, it is convenient to check the clamping force applied by the upper claw arm 21 on the cargo.

[0043] When the upper low-pressure indicator light 24, the upper medium-pressure indicator light 25 and the upper high-pressure indicator light 26 are illuminated, the upper green lamp cover 27, the upper yellow lamp cover 28 and the upper red lamp cover 29 emit green light, yellow light and red light respectively, which facilitates the inspection of the clamping force applied by the upper claw arm 21 on the cargo.

[0044] The control module 41 is preset with a lower low pressure threshold and a lower high pressure threshold. When the lower oil pressure sensor 45 detects that the oil pressure in the lower hydraulic cylinder 32 is lower than the lower low pressure threshold, the control module 41 controls the lower low pressure indicator 34 to light up; when the lower oil pressure sensor 45 detects that the oil pressure in the lower hydraulic cylinder 32 is higher than the lower low pressure threshold and lower than the lower high pressure threshold, the control module 41 controls the lower medium pressure indicator 35 to light up; when the lower oil pressure sensor 45 detects that the oil pressure in the lower hydraulic cylinder 32 is higher than the lower high pressure threshold, the control module 41 controls the lower high pressure indicator 36 to light up. By observing the light emission of different lights in the lower indicator light group, it is convenient to check the clamping force applied by the lower claw arm 31 on the cargo.

[0045] When the lower low-pressure indicator light 34, the lower medium-pressure indicator light 35 and the lower high-pressure indicator light 36 are illuminated, the lower green lamp cover 37, the lower yellow lamp cover 38 and the lower red lamp cover 39 emit green light, yellow light and red light respectively, which facilitates the inspection of the clamping force applied by the upper claw arm 21 on the cargo.

[0046] The auxiliary support plate 14 and the main support plate 13 are fixed to each other to support each other and improve the overall structural strength of the support base 12. The upper claw arm 21 and the lower claw arm 31 are connected to the auxiliary support plate 14, and the upper claw arm 21 and the lower claw arm 31 can be supported by the main support plate 13 and the auxiliary support plate 14, so that the upper claw arm 21 and the lower claw arm 31 can bear the weight of the goods and clamp the goods.

[0047] The upper hydraulic cylinder 22 and the upper claw arm 21 are connected at different positions of the support base 12 to ensure the structural stability between the upper hydraulic cylinder 22, the upper claw arm 21 and the support base 12. The lower hydraulic cylinder 32 and the lower claw arm 31 are connected at different positions of the support base 12 to ensure the structural stability between the lower hydraulic cylinder 32, the lower claw arm 31 and the support base 12.

[0048] The cargo is clamped by the upper clamping plate 23, and the angle of the upper claw arm 21 is adjusted by the upper clamping plate 23, so that when the upper claw arm 21 rotates on the support base 12, it can adapt to the angle of the cargo and keep in contact with the cargo, thereby improving the stability between the upper claw arm 21 and the cargo.

[0049] The cargo is clamped by the lower clamping plate 33, and the angle of the lower claw arm 31 is adjusted by the lower clamping plate 33, so that when the lower claw arm 31 rotates on the support seat 12, it can adapt to the angle of the cargo and keep in contact with the cargo, thereby improving the stability between the lower claw arm 31 and the cargo.

[0050] Since the position where the paper roll contacts the ground when placed on the ground is below the axis of the paper roll, it is difficult for the lower claw arm 31 to move directly below the paper roll when clamping the paper roll. At this time, the goods are clamped at an inclined angle by the longer upper claw arm 21 and the shorter lower claw arm 31, so that the upper claw arm 21 contacts the upper front part of the paper roll and the lower claw arm 31 contacts the lower rear part of the paper roll, so that the paper roll can be clamped without moving the lower claw arm 31 directly below the paper roll, which facilitates the clamping of goods.

[0051] According to the disclosure and teaching of the above specification, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A paper roll clamp, characterized in that: The invention comprises a connecting plate (11), a supporting seat (12), an upper claw arm (21) and a lower claw arm (31), wherein the supporting seat (12) is mounted on the connecting plate (11), the upper claw arm (21) and the lower claw arm (31) are rotatably mounted on the supporting seat (12), an upper hydraulic cylinder (22) is arranged between the upper claw arm (21) and the supporting seat (12), the upper hydraulic cylinder (22) is provided with an upper pressure regulating valve (42), the upper pressure regulating valve (42) is electrically connected to a control module (41), and the upper hydraulic cylinder (22) is connected to an upper oil pressure sensor ( 44), the upper oil pressure sensor (44) is electrically connected to the control module (41), the control module (41) is electrically connected to the upper indicator light group, a lower hydraulic cylinder (32) is provided between the lower claw arm (31) and the support seat (12), the lower hydraulic cylinder (32) is provided with a lower pressure regulating valve (43), the lower hydraulic cylinder (32) is connected to a lower oil pressure sensor (45), the lower pressure regulating valve (43) and the lower oil pressure sensor (45) are both electrically connected to the control module (41), and the control module (41) is electrically connected to the lower indicator light group.

2. The paper roll clamp according to claim 1, characterized in that: The upper indicator light group comprises an upper low-pressure indicator light (24), an upper medium-pressure indicator light (25) and an upper high-pressure indicator light (26); the upper low-pressure indicator light (24), the upper medium-pressure indicator light (25) and the upper high-pressure indicator light (26) are electrically connected to the control module (41) respectively; the upper low-pressure indicator light (24) is mounted on the upper claw arm (21); the upper medium-pressure indicator light (25) is mounted on the upper low-pressure indicator light (24); and the upper high-pressure indicator light (26) is mounted on the upper medium-pressure indicator light (25).

3. The paper roll clamp according to claim 2, characterized in that: The upper claw arm (21) is fixedly connected to an upper green lamp cover (27) that covers an upper low-pressure indicator light (24), the upper green lamp cover (27) is fixedly connected to an upper yellow lamp cover (28) that covers an upper medium-pressure indicator light (25), and the upper yellow lamp cover (28) is fixedly connected to an upper red lamp cover (29) that covers an upper high-pressure indicator light (26).

4. The paper roll clamp according to claim 1, characterized in that: The lower indicator light group comprises a lower low-pressure indicator light (34), a lower medium-pressure indicator light (35) and a lower high-pressure indicator light (36); the lower low-pressure indicator light (34), the lower medium-pressure indicator light (35) and the lower high-pressure indicator light (36) are electrically connected to the control module (41) respectively; the lower low-pressure indicator light (34) is mounted on the lower claw arm (31); the lower medium-pressure indicator light (35) is mounted on the lower low-pressure indicator light (34); and the lower high-pressure indicator light (36) is mounted on the lower medium-pressure indicator light (35).

5. The paper roll clamp according to claim 4, characterized in that: The lower claw arm (31) is fixedly connected to a lower green lamp cover (37) that covers a lower low-pressure indicator light (34); the lower green lamp cover (37) is fixedly connected to a lower yellow lamp cover (38) that covers a lower medium-pressure indicator light (35); and the lower yellow lamp cover (38) is fixedly connected to a lower red lamp cover (39) that covers a lower high-pressure indicator light (36).

6. The paper roll clamp according to claim 1, characterized in that: The support seat (12) comprises a main support plate (13) and a secondary support plate (14); the main support plate (13) and the secondary support plate (14) are both fixed to the connecting plate (11); the secondary support plate (14) is fixedly connected to the middle part of the main support plate (13); and the upper claw arm (21) and the lower claw arm (31) are rotatably connected to the upper and lower ends of the secondary support plate (14), respectively.

7. The paper roll clamp according to claim 6, characterized in that: The two ends of the upper hydraulic cylinder (22) are rotatably connected to the upper end of the main support plate (13) and the upper claw arm (21), respectively, and the two ends of the lower hydraulic cylinder (32) are rotatably connected to the lower end of the main support plate (13) and the lower claw arm (31), respectively.

8. The paper roll clamp according to claim 1, characterized in that: An upper clamping plate (23) is rotatably mounted on one end of the upper claw arm (21) away from the support seat (12).

9. The paper roll clamp according to claim 1, characterized in that: A lower clamping plate (33) is rotatably mounted on one end of the lower claw arm (31) away from the support seat (12).

10. The paper roll clamp according to claim 1, characterized in that: The length of the upper claw arm (21) is greater than the length of the lower claw arm (31).

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