Balance beam of bridge crane

Abstract

The utility model discloses a balance beam of a bridge crane, which is characterized in that the balance beam comprises a cross beam, a left sliding piece and a right sliding piece are mounted in an inner cavity of the cross beam in a sliding fit manner, and hooks positioned on the outer side of the cross beam are mounted at the lower ends of the sliding pieces; a threaded hole and a through hole are formed in each sliding piece, a front threaded rod and a rear threaded rod are further installed in the cross beam in a rotating connection mode, and one threaded rod sequentially penetrates through the threaded hole in one sliding piece and the through hole in the other sliding piece. The other threaded rod sequentially penetrates through the through hole in one sliding piece and the threaded hole in the other sliding piece, and the threaded rod is matched with the threaded hole which the threaded rod penetrates through. Two driving devices which are in one-to-one correspondence with the threaded rods and are in transmission connection with the threaded rods are further mounted on the cross beam; by means of the device, balance can be more conveniently controlled during hoisting, inclined pulling and inclined hoisting are prevented, the stability is improved, potential safety hazards are reduced, and threats to the personal safety of mine workers are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a balance beam of a bridge crane. Background Art

[0002] A crane is a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. In mines, bridge cranes are usually used for lifting operations (transporting ore and other materials). However, during the lifting process, the connection structure of the existing bridge crane is difficult to balance during lifting, which can easily cause slanting and tilting, resulting in poor stability and certain safety hazards. It poses a threat to the personal safety of mine workers and is not conducive to promotion and application. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a bridge crane balance beam, through which the balance can be controlled more easily during lifting, oblique lifting can be prevented, stability can be improved, safety hazards can be reduced, and threats to the personal safety of mine workers can be avoided.

[0004] In order to solve this technical problem, the utility model adopts the following technical solutions:

[0005] A bridge crane balance beam comprises a horizontally arranged crossbeam, and two groups of left and right lifting eyes are arranged on the top of the crossbeam;

[0006] Two left and right sliding members are installed in the inner cavity of the crossbeam by sliding cooperation, and the lower ends of the sliding members are installed with hooks located on the outside of the crossbeam;

[0007] Each of the sliding members is provided with a threaded hole and a through hole, and the crossbeam is also provided with two front and rear threaded rods by means of a rotational connection, one threaded rod sequentially passes through the threaded hole on one sliding member and the through hole on the other sliding member, and the other threaded rod sequentially passes through the through hole on one sliding member and the threaded hole on the other sliding member, and the threaded rods are matched with the threaded holes passed through;

[0008] The crossbeam is also provided with two driving devices which correspond to the threaded rods one by one and are transmission-connected to each other.

[0009] Preferably, a mounting groove is provided on the front wall plate of the crossbeam, and a bracket is installed in the mounting groove; the driving device is a motor installed on the bracket, and the motor is transmission-connected to the corresponding threaded rod through a transmission belt.

[0010] Further preferably, a protective plate is provided on the outer side of the installation groove.

[0011] Preferably, a slide groove is provided in the inner cavity of the crossbeam, and a pulley matching with the slide groove is provided on the sliding member.

[0012] Preferably, the hook includes a C-shaped hook body, the upper end of the hook body is fixed to the bottom of the sliding member; two front and rear groups of first sleeves are provided at the upper end surface of the opening of the hook body; the hook also includes a fixing block, a pin and a clamping plate; the fixing block is used to block the opening, and a second sleeve is provided at the upper end of the fixing block, and the second sleeve is located between the two groups of first sleeves; the pin passes through the first sleeve and the second sleeve to realize the rotational connection between the fixing block and the hook body; a first clamping groove is provided on the upper end surface of the hook body opening, a second clamping groove corresponding to the position of the first clamping groove is provided on the top of the second sleeve, and a third clamping groove corresponding to the position of the first clamping groove and the second clamping groove is provided on the top of the pin, and the clamping plate cooperates with the first clamping groove, the second clamping groove and the third clamping groove.

[0013] Further preferably, a fixing ring is provided at the bottom of the sliding member.

[0014] Further preferably, the upper end of the hook body passes through the fixing ring.

[0015] Further preferably, the upper end surface of the hook body opening is provided with a fixing plate, and the lower side of the fixing plate is provided with a first clamping groove and two groups of first sleeves.

[0016] The positive effects of the utility model are:

[0017] First, the utility model arranges two sliding parts in the crossbeam, and the two sliding parts are connected by a threaded rod, so that it is easier to control the balance during lifting, avoids the occurrence of oblique lifting, improves stability, reduces safety hazards, and avoids threats to the personal safety of mine workers.

[0018] Secondly, the utility model avoids the occurrence of unhooking due to difficulty in closing the hook after the heavy object is hooked by adjusting the opening and closing method of the hook (from the traditional closed structure and the hook body rotating centripetally in the same plane to the closed structure and the hook body rotating in the left and right directions), thereby further improving the safety and stability of the lifting operation.

[0019] Thirdly, the utility model reduces the friction for the movement of the sliding member by arranging a pulley in the crossbeam to cooperate with the sliding groove, thereby helping the sliding member to move quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is an exploded view of the overall structure of the utility model;

[0022] Figure 3 It is a top view of the sliding member structure of the utility model;

[0023] Figure 4It is a bottom view of the sliding member structure of the utility model;

[0024] Figure 5 It is an exploded view of the hook structure of the utility model. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] like Figure 1 and Figure 2 As shown, the utility model comprises a horizontally arranged cross beam 1, and two groups of left and right lifting lugs 101 are arranged on the top of the cross beam 1, and the lifting lugs 101 are connected to the lifting hook of the crane through a chain. A slide groove 12 is arranged transversely in the inner cavity of the cross beam 1.

[0027] The inner cavity of the cross beam 1 is provided with two left and right sliding members 2 by means of sliding cooperation, and the lower end of the sliding member 2 is provided with a hook 5 located on the outside of the cross beam 1. The cross beam 1 is also provided with two front and rear threaded rods 4 by means of rotational connection, and the cross beam 1 is also provided with two driving devices 3 corresponding to and connected to the threaded rods 4 in a one-to-one manner, and the driving device 3 is provided with a through groove 301 for connecting. The front wall plate of the cross beam 1 is provided with a mounting groove 11, and a protective plate 102 is provided on the outside of the mounting groove 11, and a bracket is installed in the mounting groove 11. The driving device 3 is a motor installed on the bracket, and the motor is connected to the corresponding threaded rod 4 by means of a transmission belt.

[0028] By arranging two sliding members 2 in the crossbeam 1 and connecting the two sliding members 2 through a threaded rod 4, it is achieved that the balance is easier to control during lifting, and oblique lifting is prevented, the stability is improved, the safety hazards are reduced, and the threat to the personal safety of mining workers is avoided.

[0029] like Figure 3 and Figure 4 As shown, each of the sliding members 2 is provided with a threaded hole 201 and a through hole, a threaded rod 4 sequentially passes through the threaded hole 201 on one sliding member 2 and the through hole on another sliding member 2, another threaded rod 4 sequentially passes through the through hole on one sliding member 2 and the threaded hole 201 on another sliding member 2, and the threaded rod 4 cooperates with the threaded hole 201 passed through.

[0030] The sliding member 2 is provided with a pulley 203 that matches the slide groove 12. By arranging the pulley 203 in the crossbeam 1 to match the slide groove 12, the friction force for the movement of the sliding member 2 is reduced, and the sliding member 2 is helped to move quickly.

[0031] A fixing ring 202 is provided at the bottom of the sliding member 2 .

[0032] like Figure 5As shown, the hook 5 includes a C-shaped hook body 505, and the upper end of the hook body 505 passes through the fixing ring 202 at the bottom of the sliding member 2. The upper end surface of the opening of the hook body 505 is provided with a fixing plate 501, and the lower side of the fixing plate 501 is provided with two groups of first sleeves 5011 in front and back. The hook 5 also includes a fixing block 502, a pin 504 and a clamping plate 503. The fixing block 502 is used to block the opening, and the upper end of the fixing block 502 is provided with a second sleeve 5021, and the second sleeve 5021 is located between the two groups of first sleeves 5011. The pin 504 passes through the first sleeve 5011 and the second sleeve 5021 to achieve a rotational connection between the fixing block 502 and the hook body 505. The upper end surface of the opening of the hook body 505 is provided with a first slot 5012, the top of the second sleeve 5021 is provided with a second slot 5022 corresponding to the position of the first slot 5012, the top of the pin shaft 504 is provided with a third slot 5041 corresponding to the positions of the first slot 5012 and the second slot 5022, and the clamping plate 503 cooperates with the first slot 5012, the second slot 5022 and the third slot 5041.

[0033] By adjusting the opening and closing method of the hook 5 (from the traditional closed structure and the hook body 505 rotating in the same plane centripetally to the closed structure and the hook body 505 rotating in the left and right directions), the hook 5 is prevented from being unhooked due to difficulty in closing after hanging a heavy object, thereby further improving the safety and stability of the lifting operation.

[0034] The utility model discloses a bridge crane balance beam, and its use method is as follows:

[0035] Take out the card plate 503, the fixed block 502 can rotate left and right with the pin shaft 504 as the center, adjust the opening to a suitable size, hang the heavy object on the hook 5, and then rotate the fixed block 502 back to its original position, pass the card plate 503 through the first slot 5012, the second slot 5022 and the third slot 5041 to complete the closure of the hook 5.

[0036] The driving device 3 (motor) is started to drive the threaded rod 4 to rotate. Under the action of the threaded connection between the threaded hole 201 and the threaded rod 4, the sliding member 2 corresponding to the threaded rod 4 moves left and right. During the movement, the pulley 203 assists the sliding member 2 to move quickly on the slide groove 12. When the sliding member 2 moves to the beam 1 and reaches balance, the driving device 3 is turned off and the hoisting operation begins.

Claims

1. A bridge crane balance beam, characterized in that: It comprises a horizontally arranged crossbeam (1), wherein the top of the crossbeam (1) is provided with two groups of left and right lifting ears (101); Two left and right sliding members (2) are installed in the inner cavity of the crossbeam (1) by means of sliding fit, and a hook (5) located outside the crossbeam (1) is installed at the lower end of the sliding member (2); Each of the sliding members (2) is provided with a threaded hole (201) and a through hole, and two front and rear threaded rods (4) are also installed in the crossbeam (1) by means of a rotational connection, one threaded rod (4) sequentially passes through the threaded hole (201) on one sliding member (2) and the through hole on the other sliding member (2), and the other threaded rod (4) sequentially passes through the through hole on one sliding member (2) and the threaded hole (201) on the other sliding member (2), and the threaded rod (4) matches the threaded hole (201) passed through; Two driving devices (3) corresponding one to one with the threaded rods (4) and being transmission-connected are also mounted on the crossbeam (1).

2. The bridge crane balance beam according to claim 1, characterized in that: A mounting groove (11) is provided on the front wall plate of the crossbeam (1), and a bracket is installed in the mounting groove (11); the driving device (3) is a motor installed on the bracket, and the motor is connected to the corresponding threaded rod (4) through a transmission belt.

3. The bridge crane balance beam according to claim 2, characterized in that: A protective plate (102) is provided on the outside of the installation groove (11).

4. The bridge crane balance beam according to claim 1, characterized in that: A sliding groove (12) is provided in the inner cavity of the crossbeam (1), and a pulley (203) matching with the sliding groove (12) is provided on the sliding member (2).

5. The bridge crane balance beam according to claim 1, characterized in that: The hook (5) comprises a C-shaped hook body (505), the upper end of the hook body (505) is fixed to the bottom of the sliding member (2); the upper end surface of the opening of the hook body (505) is provided with two groups of first sleeves (5011) in front and back; the hook (5) further comprises a fixing block (502), a pin (504) and a clamping plate (503); the fixing block (502) is used to block the opening, the upper end of the fixing block (502) is provided with a second sleeve (5021), and the second sleeve (5021) is located between the two groups of first sleeves (5011); the pin (504) passes through the first sleeve (5011) ) and a second sleeve (5021) to realize the rotational connection between the fixed block (502) and the hook body (505); the upper end surface of the opening of the hook body (505) is provided with a first clamping groove (5012), the top of the second sleeve (5021) is provided with a second clamping groove (5022) corresponding to the position of the first clamping groove (5012), the top of the pin shaft (504) is provided with a third clamping groove (5041) corresponding to the positions of the first clamping groove (5012) and the second clamping groove (5022), and the clamping plate (503) cooperates with the first clamping groove (5012), the second clamping groove (5022) and the third clamping groove (5041).

6. The bridge crane balance beam according to claim 5, characterized in that: A fixing ring (202) is provided at the bottom of the sliding member (2).

7. The bridge crane balance beam according to claim 6, characterized in that: The upper end of the hook body (505) passes through the fixing ring (202).

8. The bridge crane balance beam according to claim 5, characterized in that: The upper end surface of the opening of the hook body (505) is provided with a fixing plate (501), and the lower side of the fixing plate (501) is provided with a first clamping groove (5012) and two groups of first sleeves (5011).

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